diff --git a/.babelrc b/.babelrc
deleted file mode 100644
index b04a804..0000000
--- a/.babelrc
+++ /dev/null
@@ -1,19 +0,0 @@
-{
-	"presets": [
-		[
-			"@babel/env",
-			{
-				"targets": {
-					"node": "10"
-				},
-				"debug": false,
-				"useBuiltIns": "usage",
-				"corejs": 3,
-				"shippedProposals": true
-			}
-		],
-		"@babel/preset-typescript"
-	],
-	"plugins": [
-	]
-}
diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..3063f07
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1,2 @@
+lib
+node_modules
diff --git a/.eslintrc.js b/.eslintrc.js
index 4904913..2b293a4 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -11,7 +11,7 @@ module.exports = {
     'plugin:@typescript-eslint/recommended',
   ],
   parserOptions: {
-    project: ['./tsconfig.json', './tsconfig.eslint.json']
+    project: ['./tsconfig.eslint.json']
   },
   rules: {
     'semi': 'off',
diff --git a/.npmignore b/.npmignore
index 950f48c..dbe5651 100644
--- a/.npmignore
+++ b/.npmignore
@@ -4,6 +4,7 @@
 .nvmrc
 .github/
 .eslintrc.js
+.eslintignore
 tsconfig.*
 
 .idea
diff --git a/.travis.yml b/.travis.yml
index 31c56d4..8d17119 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,6 @@ before_script:
   - npm run test
   - npm run lint
 script:
-  - npm run build
+  - npm run compile
 after_success:
   - npm run semantic-release
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 7f082b0..f2549d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,60 +4,6 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "@babel/cli": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.12.1.tgz",
-      "integrity": "sha512-eRJREyrfAJ2r42Iaxe8h3v6yyj1wu9OyosaUHW6UImjGf9ahGL9nsFNh7OCopvtcPL8WnEo7tp78wrZaZ6vG9g==",
-      "dev": true,
-      "requires": {
-        "@nicolo-ribaudo/chokidar-2": "^2.1.8",
-        "chokidar": "^3.4.0",
-        "commander": "^4.0.1",
-        "convert-source-map": "^1.1.0",
-        "fs-readdir-recursive": "^1.1.0",
-        "glob": "^7.0.0",
-        "lodash": "^4.17.19",
-        "make-dir": "^2.1.0",
-        "slash": "^2.0.0",
-        "source-map": "^0.5.0"
-      },
-      "dependencies": {
-        "make-dir": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-2.1.0.tgz",
-          "integrity": "sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==",
-          "dev": true,
-          "requires": {
-            "pify": "^4.0.1",
-            "semver": "^5.6.0"
-          }
-        },
-        "pify": {
-          "version": "4.0.1",
-          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
-          "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
-          "dev": true
-        },
-        "semver": {
-          "version": "5.7.1",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
-          "dev": true
-        },
-        "slash": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/slash/-/slash-2.0.0.tgz",
-          "integrity": "sha512-ZYKh3Wh2z1PpEXWr0MpSBZ0V6mZHAQfYevttO11c51CaWjGTaadiKZ+wVt1PbMlDV5qhMFslpZCemhwOK7C89A==",
-          "dev": true
-        },
-        "source-map": {
-          "version": "0.5.7",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
-          "dev": true
-        }
-      }
-    },
     "@babel/code-frame": {
       "version": "7.10.4",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.10.4.tgz",
@@ -67,12 +13,6 @@
         "@babel/highlight": "^7.10.4"
       }
     },
-    "@babel/compat-data": {
-      "version": "7.12.5",
-      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.12.5.tgz",
-      "integrity": "sha512-DTsS7cxrsH3by8nqQSpFSyjSfSYl57D6Cf4q8dW3LK83tBKBDCkfcay1nYkXq1nIHXnpX8WMMb/O25HOy3h1zg==",
-      "dev": true
-    },
     "@babel/core": {
       "version": "7.12.3",
       "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.12.3.tgz",
@@ -139,89 +79,6 @@
         }
       }
     },
-    "@babel/helper-annotate-as-pure": {
-      "version": "7.10.4",
-      "resolved": "https://registry.npmjs.org/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.10.4.tgz",
-      "integrity": "sha512-XQlqKQP4vXFB7BN8fEEerrmYvHp3fK/rBkRFz9jaJbzK0B1DSfej9Kc7ZzE8Z/OnId1jpJdNAZ3BFQjWG68rcA==",
-      "dev": true,
-      "requires": {
-        "@babel/types": "^7.10.4"
-      }
-    },
-    "@babel/helper-builder-binary-assignment-operator-visitor": {
-      "version": "7.10.4",
-      "resolved": "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.10.4.tgz",
-      "integrity": "sha512-L0zGlFrGWZK4PbT8AszSfLTM5sDU1+Az/En9VrdT8/LmEiJt4zXt+Jve9DCAnQcbqDhCI+29y/L93mrDzddCcg==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-explode-assignable-expression": "^7.10.4",
-        "@babel/types": "^7.10.4"
-      }
-    },
-    "@babel/helper-compilation-targets": {
-      "version": "7.12.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.12.5.tgz",
-      "integrity": "sha512-+qH6NrscMolUlzOYngSBMIOQpKUGPPsc61Bu5W10mg84LxZ7cmvnBHzARKbDoFxVvqqAbj6Tg6N7bSrWSPXMyw==",
-      "dev": true,
-      "requires": {
-        "@babel/compat-data": "^7.12.5",
-        "@babel/helper-validator-option": "^7.12.1",
-        "browserslist": "^4.14.5",
-        "semver": "^5.5.0"
-      },
-      "dependencies": {
-        "semver": {
-          "version": "5.7.1",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
-          "dev": true
-        }
-      }
-    },
-    "@babel/helper-create-class-features-plugin": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.12.1.tgz",
-      "integrity": "sha512-hkL++rWeta/OVOBTRJc9a5Azh5mt5WgZUGAKMD8JM141YsE08K//bp1unBBieO6rUKkIPyUE0USQ30jAy3Sk1w==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-function-name": "^7.10.4",
-        "@babel/helper-member-expression-to-functions": "^7.12.1",
-        "@babel/helper-optimise-call-expression": "^7.10.4",
-        "@babel/helper-replace-supers": "^7.12.1",
-        "@babel/helper-split-export-declaration": "^7.10.4"
-      }
-    },
-    "@babel/helper-create-regexp-features-plugin": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.12.1.tgz",
-      "integrity": "sha512-rsZ4LGvFTZnzdNZR5HZdmJVuXK8834R5QkF3WvcnBhrlVtF0HSIUC6zbreL9MgjTywhKokn8RIYRiq99+DLAxA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-annotate-as-pure": "^7.10.4",
-        "@babel/helper-regex": "^7.10.4",
-        "regexpu-core": "^4.7.1"
-      }
-    },
-    "@babel/helper-define-map": {
-      "version": "7.10.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.10.5.tgz",
-      "integrity": "sha512-fMw4kgFB720aQFXSVaXr79pjjcW5puTCM16+rECJ/plGS+zByelE8l9nCpV1GibxTnFVmUuYG9U8wYfQHdzOEQ==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-function-name": "^7.10.4",
-        "@babel/types": "^7.10.5",
-        "lodash": "^4.17.19"
-      }
-    },
-    "@babel/helper-explode-assignable-expression": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-explode-assignable-expression/-/helper-explode-assignable-expression-7.12.1.tgz",
-      "integrity": "sha512-dmUwH8XmlrUpVqgtZ737tK88v07l840z9j3OEhCLwKTkjlvKpfqXVIZ0wpK3aeOxspwGrf/5AP5qLx4rO3w5rA==",
-      "dev": true,
-      "requires": {
-        "@babel/types": "^7.12.1"
-      }
-    },
     "@babel/helper-function-name": {
       "version": "7.10.4",
       "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.10.4.tgz",
@@ -242,15 +99,6 @@
         "@babel/types": "^7.10.4"
       }
     },
-    "@babel/helper-hoist-variables": {
-      "version": "7.10.4",
-      "resolved": "https://registry.npmjs.org/@babel/helper-hoist-variables/-/helper-hoist-variables-7.10.4.tgz",
-      "integrity": "sha512-wljroF5PgCk2juF69kanHVs6vrLwIPNp6DLD+Lrl3hoQ3PpPPikaDRNFA+0t81NOoMt2DL6WW/mdU8k4k6ZzuA==",
-      "dev": true,
-      "requires": {
-        "@babel/types": "^7.10.4"
-      }
-    },
     "@babel/helper-member-expression-to-functions": {
       "version": "7.12.1",
       "resolved": "https://registry.npmjs.org/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.12.1.tgz",
@@ -301,26 +149,6 @@
       "integrity": "sha512-O4KCvQA6lLiMU9l2eawBPMf1xPP8xPfB3iEQw150hOVTqj/rfXz0ThTb4HEzqQfs2Bmo5Ay8BzxfzVtBrr9dVg==",
       "dev": true
     },
-    "@babel/helper-regex": {
-      "version": "7.10.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-regex/-/helper-regex-7.10.5.tgz",
-      "integrity": "sha512-68kdUAzDrljqBrio7DYAEgCoJHxppJOERHOgOrDN7WjOzP0ZQ1LsSDRXcemzVZaLvjaJsJEESb6qt+znNuENDg==",
-      "dev": true,
-      "requires": {
-        "lodash": "^4.17.19"
-      }
-    },
-    "@babel/helper-remap-async-to-generator": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-remap-async-to-generator/-/helper-remap-async-to-generator-7.12.1.tgz",
-      "integrity": "sha512-9d0KQCRM8clMPcDwo8SevNs+/9a8yWVVmaE80FGJcEP8N1qToREmWEGnBn8BUlJhYRFz6fqxeRL1sl5Ogsed7A==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-annotate-as-pure": "^7.10.4",
-        "@babel/helper-wrap-function": "^7.10.4",
-        "@babel/types": "^7.12.1"
-      }
-    },
     "@babel/helper-replace-supers": {
       "version": "7.12.5",
       "resolved": "https://registry.npmjs.org/@babel/helper-replace-supers/-/helper-replace-supers-7.12.5.tgz",
@@ -342,15 +170,6 @@
         "@babel/types": "^7.12.1"
       }
     },
-    "@babel/helper-skip-transparent-expression-wrappers": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-skip-transparent-expression-wrappers/-/helper-skip-transparent-expression-wrappers-7.12.1.tgz",
-      "integrity": "sha512-Mf5AUuhG1/OCChOJ/HcADmvcHM42WJockombn8ATJG3OnyiSxBK/Mm5x78BQWvmtXZKHgbjdGL2kin/HOLlZGA==",
-      "dev": true,
-      "requires": {
-        "@babel/types": "^7.12.1"
-      }
-    },
     "@babel/helper-split-export-declaration": {
       "version": "7.11.0",
       "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.11.0.tgz",
@@ -366,24 +185,6 @@
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       "dev": true
     },
-    "@babel/helper-validator-option": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-validator-option/-/helper-validator-option-7.12.1.tgz",
-      "integrity": "sha512-YpJabsXlJVWP0USHjnC/AQDTLlZERbON577YUVO/wLpqyj6HAtVYnWaQaN0iUN+1/tWn3c+uKKXjRut5115Y2A==",
-      "dev": true
-    },
-    "@babel/helper-wrap-function": {
-      "version": "7.12.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-wrap-function/-/helper-wrap-function-7.12.3.tgz",
-      "integrity": "sha512-Cvb8IuJDln3rs6tzjW3Y8UeelAOdnpB8xtQ4sme2MSZ9wOxrbThporC0y/EtE16VAtoyEfLM404Xr1e0OOp+ow==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-function-name": "^7.10.4",
-        "@babel/template": "^7.10.4",
-        "@babel/traverse": "^7.10.4",
-        "@babel/types": "^7.10.4"
-      }
-    },
     "@babel/helpers": {
       "version": "7.12.5",
       "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.12.5.tgz",
@@ -425,139 +226,6 @@
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       "dev": true
     },
-    "@babel/plugin-proposal-async-generator-functions": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-async-generator-functions/-/plugin-proposal-async-generator-functions-7.12.1.tgz",
-      "integrity": "sha512-d+/o30tJxFxrA1lhzJqiUcEJdI6jKlNregCv5bASeGf2Q4MXmnwH7viDo7nhx1/ohf09oaH8j1GVYG/e3Yqk6A==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.10.4",
-        "@babel/helper-remap-async-to-generator": "^7.12.1",
-        "@babel/plugin-syntax-async-generators": "^7.8.0"
-      }
-    },
-    "@babel/plugin-proposal-class-properties": {
-      "version": "7.12.1",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-class-properties/-/plugin-proposal-class-properties-7.12.1.tgz",
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-      "dev": true,
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-        "@babel/helper-plugin-utils": "^7.10.4"
-      }
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@@ -12604,20 +10307,6 @@
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       "dev": true
     },
-    "regexpu-core": {
-      "version": "4.7.1",
-      "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-4.7.1.tgz",
-      "integrity": "sha512-ywH2VUraA44DZQuRKzARmw6S66mr48pQVva4LBeRhcOltJ6hExvWly5ZjFLYo67xbIxb6W1q4bAGtgfEl20zfQ==",
-      "dev": true,
-      "requires": {
-        "regenerate": "^1.4.0",
-        "regenerate-unicode-properties": "^8.2.0",
-        "regjsgen": "^0.5.1",
-        "regjsparser": "^0.6.4",
-        "unicode-match-property-ecmascript": "^1.0.4",
-        "unicode-match-property-value-ecmascript": "^1.2.0"
-      }
-    },
     "registry-auth-token": {
       "version": "4.2.1",
       "resolved": "https://registry.npmjs.org/registry-auth-token/-/registry-auth-token-4.2.1.tgz",
@@ -12627,29 +10316,6 @@
         "rc": "^1.2.8"
       }
     },
-    "regjsgen": {
-      "version": "0.5.2",
-      "resolved": "https://registry.npmjs.org/regjsgen/-/regjsgen-0.5.2.tgz",
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-      "dev": true
-    },
-    "regjsparser": {
-      "version": "0.6.4",
-      "resolved": "https://registry.npmjs.org/regjsparser/-/regjsparser-0.6.4.tgz",
-      "integrity": "sha512-64O87/dPDgfk8/RQqC4gkZoGyyWFIEUTTh80CU6CWuK5vkCGyekIx+oKcEIYtP/RAxSQltCZHCNu/mdd7fqlJw==",
-      "dev": true,
-      "requires": {
-        "jsesc": "~0.5.0"
-      },
-      "dependencies": {
-        "jsesc": {
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-          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
-          "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
-          "dev": true
-        }
-      }
-    },
     "remove-trailing-separator": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
@@ -12793,85 +10459,6 @@
         "glob": "^7.1.3"
       }
     },
-    "ripemd160": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/ripemd160/-/ripemd160-2.0.2.tgz",
-      "integrity": "sha512-ii4iagi25WusVoiC4B4lq7pbXfAp3D9v5CwfkY33vffw2+pkDjY1D8GaN7spsxvCSx8dkPqOZCEZyfxcmJG2IA==",
-      "dev": true,
-      "requires": {
-        "hash-base": "^3.0.0",
-        "inherits": "^2.0.1"
-      }
-    },
-    "rollup": {
-      "version": "2.33.1",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.33.1.tgz",
-      "integrity": "sha512-uY4O/IoL9oNW8MMcbA5hcOaz6tZTMIh7qJHx/tzIJm+n1wLoY38BLn6fuy7DhR57oNFLMbDQtDeJoFURt5933w==",
-      "dev": true,
-      "requires": {
-        "fsevents": "~2.1.2"
-      }
-    },
-    "rollup-plugin-node-builtins": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-builtins/-/rollup-plugin-node-builtins-2.1.2.tgz",
-      "integrity": "sha1-JKH+1KQyV7a2Q3HYq8bOGrFFl+k=",
-      "dev": true,
-      "requires": {
-        "browserify-fs": "^1.0.0",
-        "buffer-es6": "^4.9.2",
-        "crypto-browserify": "^3.11.0",
-        "process-es6": "^0.11.2"
-      }
-    },
-    "rollup-plugin-node-globals": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-globals/-/rollup-plugin-node-globals-1.4.0.tgz",
-      "integrity": "sha512-xRkB+W/m1KLIzPUmG0ofvR+CPNcvuCuNdjVBVS7ALKSxr3EDhnzNceGkGi1m8MToSli13AzKFYH4ie9w3I5L3g==",
-      "dev": true,
-      "requires": {
-        "acorn": "^5.7.3",
-        "buffer-es6": "^4.9.3",
-        "estree-walker": "^0.5.2",
-        "magic-string": "^0.22.5",
-        "process-es6": "^0.11.6",
-        "rollup-pluginutils": "^2.3.1"
-      },
-      "dependencies": {
-        "acorn": {
-          "version": "5.7.4",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
-          "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
-          "dev": true
-        },
-        "magic-string": {
-          "version": "0.22.5",
-          "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.22.5.tgz",
-          "integrity": "sha512-oreip9rJZkzvA8Qzk9HFs8fZGF/u7H/gtrE8EN6RjKJ9kh2HlC+yQ2QezifqTZfGyiuAV0dRv5a+y/8gBb1m9w==",
-          "dev": true,
-          "requires": {
-            "vlq": "^0.2.2"
-          }
-        }
-      }
-    },
-    "rollup-pluginutils": {
-      "version": "2.8.2",
-      "resolved": "https://registry.npmjs.org/rollup-pluginutils/-/rollup-pluginutils-2.8.2.tgz",
-      "integrity": "sha512-EEp9NhnUkwY8aif6bxgovPHMoMoNr2FulJziTndpt5H9RdwC47GSGuII9XxpSdzVGM0GWrNPHV6ie1LTNJPaLQ==",
-      "dev": true,
-      "requires": {
-        "estree-walker": "^0.6.1"
-      },
-      "dependencies": {
-        "estree-walker": {
-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-0.6.1.tgz",
-          "integrity": "sha512-SqmZANLWS0mnatqbSfRP5g8OXZC12Fgg1IwNtLsyHDzJizORW4khDfjPqJZsemPWBB2uqykUah5YpQ6epsqC/w==",
-          "dev": true
-        }
-      }
-    },
     "rsvp": {
       "version": "4.8.5",
       "resolved": "https://registry.npmjs.org/rsvp/-/rsvp-4.8.5.tgz",
@@ -13344,16 +10931,6 @@
         }
       }
     },
-    "sha.js": {
-      "version": "2.4.11",
-      "resolved": "https://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
-      "integrity": "sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==",
-      "dev": true,
-      "requires": {
-        "inherits": "^2.0.1",
-        "safe-buffer": "^5.0.1"
-      }
-    },
     "sha256": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/sha256/-/sha256-0.2.0.tgz",
@@ -13652,12 +11229,6 @@
       "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=",
       "dev": true
     },
-    "sourcemap-codec": {
-      "version": "1.4.8",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.8.tgz",
-      "integrity": "sha512-9NykojV5Uih4lgo5So5dtw+f0JgJX30KCNI8gwhz2J9A15wD0Ml6tjHKwf6fTSa6fAdVBdZeNOs9eJ71qCk8vA==",
-      "dev": true
-    },
     "spawn-error-forwarder": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/spawn-error-forwarder/-/spawn-error-forwarder-1.0.0.tgz",
@@ -13827,12 +11398,6 @@
         "strip-ansi": "^6.0.0"
       }
     },
-    "string-range": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/string-range/-/string-range-1.2.2.tgz",
-      "integrity": "sha1-qJPtNH5yKZvIO++78qaSqNI51d0=",
-      "dev": true
-    },
     "string-width": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
@@ -14337,12 +11902,6 @@
       "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.8.1.tgz",
       "integrity": "sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA=="
     },
-    "typedarray": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
-      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
-      "dev": true
-    },
     "typedarray-to-buffer": {
       "version": "3.1.5",
       "resolved": "https://registry.npmjs.org/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz",
@@ -14365,34 +11924,6 @@
       "dev": true,
       "optional": true
     },
-    "unicode-canonical-property-names-ecmascript": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz",
-      "integrity": "sha512-jDrNnXWHd4oHiTZnx/ZG7gtUTVp+gCcTTKr8L0HjlwphROEW3+Him+IpvC+xcJEFegapiMZyZe02CyuOnRmbnQ==",
-      "dev": true
-    },
-    "unicode-match-property-ecmascript": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-1.0.4.tgz",
-      "integrity": "sha512-L4Qoh15vTfntsn4P1zqnHulG0LdXgjSO035fEpdtp6YxXhMT51Q6vgM5lYdG/5X3MjS+k/Y9Xw4SFCY9IkR0rg==",
-      "dev": true,
-      "requires": {
-        "unicode-canonical-property-names-ecmascript": "^1.0.4",
-        "unicode-property-aliases-ecmascript": "^1.0.4"
-      }
-    },
-    "unicode-match-property-value-ecmascript": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.2.0.tgz",
-      "integrity": "sha512-wjuQHGQVofmSJv1uVISKLE5zO2rNGzM/KCYZch/QQvez7C1hUhBIuZ701fYXExuufJFMPhv2SyL8CyoIfMLbIQ==",
-      "dev": true
-    },
-    "unicode-property-aliases-ecmascript": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.1.0.tgz",
-      "integrity": "sha512-PqSoPh/pWetQ2phoj5RLiaqIk4kCNwoV3CI+LfGmWLKI3rE3kl1h59XpX2BjgDrmbxD9ARtQobPGU1SguCYuQg==",
-      "dev": true
-    },
     "union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
@@ -14466,13 +11997,6 @@
         }
       }
     },
-    "upath": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/upath/-/upath-1.2.0.tgz",
-      "integrity": "sha512-aZwGpamFO61g3OlfT7OQCHqhGnW43ieH9WZeP7QxN/G/jS4jfqUkZxoryvJgVPEcrl5NL/ggHsSmLMHuH64Lhg==",
-      "dev": true,
-      "optional": true
-    },
     "uri-js": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.0.tgz",
@@ -14560,12 +12084,6 @@
         "extsprintf": "^1.2.0"
       }
     },
-    "vlq": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/vlq/-/vlq-0.2.3.tgz",
-      "integrity": "sha512-DRibZL6DsNhIgYQ+wNdWDL2SL3bKPlVrRiBqV5yuMm++op8W4kGFtaQfCs4KEJn0wBZcHVHJ3eoywX8983k1ow==",
-      "dev": true
-    },
     "w3c-hr-time": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.2.tgz",
@@ -14773,12 +12291,6 @@
       "resolved": "https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz",
       "integrity": "sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw="
     },
-    "xtend": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/xtend/-/xtend-2.2.0.tgz",
-      "integrity": "sha1-7vax8ZjByN6vrYsXZaBNrUoBxak=",
-      "dev": true
-    },
     "y18n": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
diff --git a/package.json b/package.json
index 4b39b24..c9d82c5 100644
--- a/package.json
+++ b/package.json
@@ -2,10 +2,11 @@
   "name": "jsonld-signatures-merkleproof2019",
   "version": "0.1.0",
   "description": "A jsonld signature implementation to support MerkleProof2019 verification in Verifiable Credential context",
-  "main": "dist/MerkleProof2019.js",
-  "module": "dist/MerkleProof2019-es.js",
-  "typings": "dist/index.d.ts",
+  "main": "lib/cjs/MerkleProof2019.js",
+  "module": "lib/esm/MerkleProof2019.js",
+  "typings": "lib/index.d.ts",
   "dependencies": {
+    "@blockcerts/explorer-lookup": "^1.0.1",
     "@vaultie/lds-merkle-proof-2019": "0.0.8",
     "core-js": "^3.7.0",
     "jsonld": "^1.8.1",
@@ -14,13 +15,6 @@
     "xmlhttprequest": "^1.8.0"
   },
   "devDependencies": {
-    "@babel/cli": "^7.12.1",
-    "@babel/preset-env": "^7.12.1",
-    "@babel/preset-typescript": "^7.12.1",
-    "@rollup/plugin-commonjs": "^16.0.0",
-    "@rollup/plugin-json": "^4.1.0",
-    "@rollup/plugin-node-resolve": "^10.0.0",
-    "@rollup/plugin-typescript": "^6.1.0",
     "@types/jest": "^26.0.15",
     "@types/sinon": "^9.0.8",
     "@typescript-eslint/eslint-plugin": "^4.6.1",
@@ -33,9 +27,6 @@
     "eslint-plugin-standard": "^4.0.2",
     "husky": "^4.3.0",
     "jest": "^26.6.3",
-    "rollup": "^2.33.1",
-    "rollup-plugin-node-builtins": "^2.1.2",
-    "rollup-plugin-node-globals": "^1.4.0",
     "semantic-release": "^17.3.0",
     "sinon": "^9.2.1",
     "ts-jest": "^26.4.4",
@@ -43,14 +34,11 @@
     "typescript": "^4.0.5"
   },
   "scripts": {
-    "copy:declaration": "cp src/index.d.ts dist/index.d.ts",
-    "build": "rollup -c && npm run transpile:node && npm run copy:declaration",
+    "copy:declaration": "cp src/index.d.ts lib/index.d.ts",
+    "compile": "tsc -p tsconfig.json && tsc -p tsconfig.cjs.json && npm run copy:declaration",
     "lint": "eslint . --ext .ts",
     "test": "jest",
     "test:watch": "jest --watch",
-    "transpile:node": "npm run transpile:node:ts && npm run clean:lib:ts",
-    "transpile:node:ts": "npx babel src -d lib --copy-files --extensions '.ts'",
-    "clean:lib:ts": "rimraf lib/\"**\"/*.ts",
     "semantic-release": "semantic-release"
   },
   "husky": {
diff --git a/rollup.config.js b/rollup.config.js
deleted file mode 100644
index 56fbf4c..0000000
--- a/rollup.config.js
+++ /dev/null
@@ -1,35 +0,0 @@
-import commonjs from '@rollup/plugin-commonjs';
-import json from '@rollup/plugin-json';
-import resolve from '@rollup/plugin-node-resolve';
-import typescript from '@rollup/plugin-typescript';
-import builtins from 'rollup-plugin-node-builtins';
-
-export default {
-  input: 'src/MerkleProof2019.ts',
-  output: [
-    {
-      file: 'dist/MerkleProof2019.js',
-      format: 'cjs',
-      name: 'MerkleProof2019',
-      exports: 'named',
-      sourcemap: true
-    },
-    {
-      file: 'dist/MerkleProof2019-es.js',
-      format: 'es',
-      name: 'MerkleProof2019',
-      sourcemap: true
-    }
-  ],
-  plugins: [
-    resolve({
-      browser: true,
-      preferBuiltins: true,
-      extensions: ['.js', '.json']
-    }),
-    typescript(),
-    commonjs({ extensions: ['.js', '.ts'] }),
-    json(),
-    builtins()
-  ]
-};
diff --git a/src/MerkleProof2019.ts b/src/MerkleProof2019.ts
index 27ab63b..1c1d5ae 100644
--- a/src/MerkleProof2019.ts
+++ b/src/MerkleProof2019.ts
@@ -1,9 +1,9 @@
 import { Decoder } from '@vaultie/lds-merkle-proof-2019';
 import jsigs from 'jsonld-signatures';
+import { lookForTx } from '@blockcerts/explorer-lookup';
 import { DecodedProof, JSONLDProof } from './models/Proof';
 import getTransactionId from './helpers/getTransactionId';
 import isTransactionIdValid from './inspectors/isTransactionIdValid';
-import lookForTx from './helpers/lookForTx';
 import { ExplorerAPI } from './models/Explorers';
 import { IBlockchainObject } from './constants/blockchains';
 import getChain from './helpers/getChain';
@@ -11,7 +11,6 @@ import { TransactionData } from './models/TransactionData';
 import computeLocalHash from './inspectors/computeLocalHash';
 import ensureHashesEqual from './inspectors/ensureHashesEqual';
 import ensureMerkleRootEqual from './inspectors/ensureMerkleRootEqual';
-import { prepareExplorerAPIs } from './explorers';
 const { LinkedDataProof } = jsigs.suites;
 
 export interface MerkleProof2019Options {
@@ -35,7 +34,7 @@ export interface MerkleProof2019VerificationResult {
   error?: string;
 }
 
-export class MerkleProof2019 extends LinkedDataProof {
+export class MerkleProof2019 extends (LinkedDataProof as any) {
   /**
    * @param type {string} Provided by subclass.
    * @param [issuer] {string} A key id URL to the paired public key.
@@ -130,7 +129,7 @@ export class MerkleProof2019 extends LinkedDataProof {
   }
 
   private setOptions (options: MerkleProof2019Options): void {
-    this.explorerAPIs = options.explorerAPIs || [];
+    this.explorerAPIs = options.explorerAPIs ?? [];
   }
 
   private validateTransactionId (): string {
@@ -142,7 +141,7 @@ export class MerkleProof2019 extends LinkedDataProof {
     this.txData = await lookForTx({
       transactionId: this.transactionId,
       chain: this.chain?.code,
-      explorerAPIs: prepareExplorerAPIs(this.explorerAPIs)
+      explorerAPIs: this.explorerAPIs
     });
   }
 }
diff --git a/src/constants/config.ts b/src/constants/config.ts
deleted file mode 100644
index a4bbb58..0000000
--- a/src/constants/config.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-const SecurityContextUrl = 'https://w3id.org/security/v1';
-
-// Minimum number of confirmations to consider a transaction valid. Recommended setting = 10
-const MininumConfirmations = 1;
-
-// Minimum number of blockchain APIs to consult to compare transaction data consistency
-const MinimumBlockchainExplorers = 1;
-
-// Try all blockchain explorers (even > MinimumBlockchainExplorers) to increase the chance of a successful query.
-const Race = true;
-
-const PublicKey = 'ecdsa-koblitz-pubkey:1';
-
-const CONFIG = {
-  SecurityContextUrl,
-  MininumConfirmations,
-  MinimumBlockchainExplorers,
-  Race,
-  PublicKey
-};
-
-export default CONFIG;
diff --git a/src/constants/contexts.ts b/src/constants/contexts.ts
index 7f1abbf..a519680 100644
--- a/src/constants/contexts.ts
+++ b/src/constants/contexts.ts
@@ -12,17 +12,33 @@ export const CONTEXTS = {
       MerkleProof2019: 'sec:MerkleProof2019',
 
       BlockcertsCredential: 'bc:BlockcertsCredential',
-      introductionUrl: { '@id': 'bc:introductionUrl', '@type': '@id' },
+      introductionUrl: {
+        '@id': 'bc:introductionUrl',
+        '@type': '@id'
+      },
 
       CryptographicKey: 'sec:Key',
 
       domain: 'sec:domain',
       nonce: 'sec:nonce',
       proofValue: 'sec:proofValue',
-      assertionMethod: { '@id': 'sec:assertionMethod', '@type': '@id', '@container': '@set' },
-      proofPurpose: { '@id': 'sec:proofPurpose', '@type': '@vocab' },
-      verificationMethod: { '@id': 'sec:verificationMethod', '@type': '@id' },
-      created: { '@id': 'bc:created', '@type': 'xsd:dateTime' },
+      assertionMethod: {
+        '@id': 'sec:assertionMethod',
+        '@type': '@id',
+        '@container': '@set'
+      },
+      proofPurpose: {
+        '@id': 'sec:proofPurpose',
+        '@type': '@vocab'
+      },
+      verificationMethod: {
+        '@id': 'sec:verificationMethod',
+        '@type': '@id'
+      },
+      created: {
+        '@id': 'bc:created',
+        '@type': 'xsd:dateTime'
+      },
 
       name: {
         '@id': 'schema:name'
@@ -62,15 +78,43 @@ export const CONTEXTS = {
               JsonSchemaValidator2018: 'cred:JsonSchemaValidator2018'
             }
           },
-          credentialStatus: { '@id': 'cred:credentialStatus', '@type': '@id' },
-          credentialSubject: { '@id': 'cred:credentialSubject', '@type': '@id' },
-          evidence: { '@id': 'cred:evidence', '@type': '@id' },
-          expirationDate: { '@id': 'cred:expirationDate', '@type': 'xsd:dateTime' },
-          holder: { '@id': 'cred:holder', '@type': '@id' },
-          issued: { '@id': 'cred:issued', '@type': 'xsd:dateTime' },
-          issuer: { '@id': 'cred:issuer', '@type': '@id' },
-          issuanceDate: { '@id': 'cred:issuanceDate', '@type': 'xsd:dateTime' },
-          proof: { '@id': 'sec:proof', '@type': '@id', '@container': '@graph' },
+          credentialStatus: {
+            '@id': 'cred:credentialStatus',
+            '@type': '@id'
+          },
+          credentialSubject: {
+            '@id': 'cred:credentialSubject',
+            '@type': '@id'
+          },
+          evidence: {
+            '@id': 'cred:evidence',
+            '@type': '@id'
+          },
+          expirationDate: {
+            '@id': 'cred:expirationDate',
+            '@type': 'xsd:dateTime'
+          },
+          holder: {
+            '@id': 'cred:holder',
+            '@type': '@id'
+          },
+          issued: {
+            '@id': 'cred:issued',
+            '@type': 'xsd:dateTime'
+          },
+          issuer: {
+            '@id': 'cred:issuer',
+            '@type': '@id'
+          },
+          issuanceDate: {
+            '@id': 'cred:issuanceDate',
+            '@type': 'xsd:dateTime'
+          },
+          proof: {
+            '@id': 'sec:proof',
+            '@type': '@id',
+            '@container': '@graph'
+          },
           refreshService: {
             '@id': 'cred:refreshService',
             '@type': '@id',
@@ -85,9 +129,18 @@ export const CONTEXTS = {
               ManualRefreshService2018: 'cred:ManualRefreshService2018'
             }
           },
-          termsOfUse: { '@id': 'cred:termsOfUse', '@type': '@id' },
-          validFrom: { '@id': 'cred:validFrom', '@type': 'xsd:dateTime' },
-          validUntil: { '@id': 'cred:validUntil', '@type': 'xsd:dateTime' }
+          termsOfUse: {
+            '@id': 'cred:termsOfUse',
+            '@type': '@id'
+          },
+          validFrom: {
+            '@id': 'cred:validFrom',
+            '@type': 'xsd:dateTime'
+          },
+          validUntil: {
+            '@id': 'cred:validUntil',
+            '@type': 'xsd:dateTime'
+          }
         }
       },
 
@@ -102,9 +155,20 @@ export const CONTEXTS = {
           cred: 'https://www.w3.org/2018/credentials#',
           sec: 'https://w3id.org/security#',
 
-          holder: { '@id': 'cred:holder', '@type': '@id' },
-          proof: { '@id': 'sec:proof', '@type': '@id', '@container': '@graph' },
-          verifiableCredential: { '@id': 'cred:verifiableCredential', '@type': '@id', '@container': '@graph' }
+          holder: {
+            '@id': 'cred:holder',
+            '@type': '@id'
+          },
+          proof: {
+            '@id': 'sec:proof',
+            '@type': '@id',
+            '@container': '@graph'
+          },
+          verifiableCredential: {
+            '@id': 'cred:verifiableCredential',
+            '@type': '@id',
+            '@container': '@graph'
+          }
         }
       },
 
@@ -120,9 +184,15 @@ export const CONTEXTS = {
           xsd: 'http://www.w3.org/2001/XMLSchema#',
 
           challenge: 'sec:challenge',
-          created: { '@id': 'http://purl.org/dc/terms/created', '@type': 'xsd:dateTime' },
+          created: {
+            '@id': 'http://purl.org/dc/terms/created',
+            '@type': 'xsd:dateTime'
+          },
           domain: 'sec:domain',
-          expires: { '@id': 'sec:expiration', '@type': 'xsd:dateTime' },
+          expires: {
+            '@id': 'sec:expiration',
+            '@type': 'xsd:dateTime'
+          },
           jws: 'sec:jws',
           nonce: 'sec:nonce',
           proofPurpose: {
@@ -136,12 +206,23 @@ export const CONTEXTS = {
 
               sec: 'https://w3id.org/security#',
 
-              assertionMethod: { '@id': 'sec:assertionMethod', '@type': '@id', '@container': '@set' },
-              authentication: { '@id': 'sec:authenticationMethod', '@type': '@id', '@container': '@set' }
+              assertionMethod: {
+                '@id': 'sec:assertionMethod',
+                '@type': '@id',
+                '@container': '@set'
+              },
+              authentication: {
+                '@id': 'sec:authenticationMethod',
+                '@type': '@id',
+                '@container': '@set'
+              }
             }
           },
           proofValue: 'sec:proofValue',
-          verificationMethod: { '@id': 'sec:verificationMethod', '@type': '@id' }
+          verificationMethod: {
+            '@id': 'sec:verificationMethod',
+            '@type': '@id'
+          }
         }
       },
 
@@ -157,9 +238,15 @@ export const CONTEXTS = {
           xsd: 'http://www.w3.org/2001/XMLSchema#',
 
           challenge: 'sec:challenge',
-          created: { '@id': 'http://purl.org/dc/terms/created', '@type': 'xsd:dateTime' },
+          created: {
+            '@id': 'http://purl.org/dc/terms/created',
+            '@type': 'xsd:dateTime'
+          },
           domain: 'sec:domain',
-          expires: { '@id': 'sec:expiration', '@type': 'xsd:dateTime' },
+          expires: {
+            '@id': 'sec:expiration',
+            '@type': 'xsd:dateTime'
+          },
           jws: 'sec:jws',
           nonce: 'sec:nonce',
           proofPurpose: {
@@ -173,12 +260,23 @@ export const CONTEXTS = {
 
               sec: 'https://w3id.org/security#',
 
-              assertionMethod: { '@id': 'sec:assertionMethod', '@type': '@id', '@container': '@set' },
-              authentication: { '@id': 'sec:authenticationMethod', '@type': '@id', '@container': '@set' }
+              assertionMethod: {
+                '@id': 'sec:assertionMethod',
+                '@type': '@id',
+                '@container': '@set'
+              },
+              authentication: {
+                '@id': 'sec:authenticationMethod',
+                '@type': '@id',
+                '@container': '@set'
+              }
             }
           },
           proofValue: 'sec:proofValue',
-          verificationMethod: { '@id': 'sec:verificationMethod', '@type': '@id' }
+          verificationMethod: {
+            '@id': 'sec:verificationMethod',
+            '@type': '@id'
+          }
         }
       },
 
@@ -194,9 +292,15 @@ export const CONTEXTS = {
           xsd: 'http://www.w3.org/2001/XMLSchema#',
 
           challenge: 'sec:challenge',
-          created: { '@id': 'http://purl.org/dc/terms/created', '@type': 'xsd:dateTime' },
+          created: {
+            '@id': 'http://purl.org/dc/terms/created',
+            '@type': 'xsd:dateTime'
+          },
           domain: 'sec:domain',
-          expires: { '@id': 'sec:expiration', '@type': 'xsd:dateTime' },
+          expires: {
+            '@id': 'sec:expiration',
+            '@type': 'xsd:dateTime'
+          },
           jws: 'sec:jws',
           nonce: 'sec:nonce',
           proofPurpose: {
@@ -210,12 +314,23 @@ export const CONTEXTS = {
 
               sec: 'https://w3id.org/security#',
 
-              assertionMethod: { '@id': 'sec:assertionMethod', '@type': '@id', '@container': '@set' },
-              authentication: { '@id': 'sec:authenticationMethod', '@type': '@id', '@container': '@set' }
+              assertionMethod: {
+                '@id': 'sec:assertionMethod',
+                '@type': '@id',
+                '@container': '@set'
+              },
+              authentication: {
+                '@id': 'sec:authenticationMethod',
+                '@type': '@id',
+                '@container': '@set'
+              }
             }
           },
           proofValue: 'sec:proofValue',
-          verificationMethod: { '@id': 'sec:verificationMethod', '@type': '@id' }
+          verificationMethod: {
+            '@id': 'sec:verificationMethod',
+            '@type': '@id'
+          }
         }
       },
 
@@ -225,9 +340,15 @@ export const CONTEXTS = {
           '@version': 1.1,
 
           challenge: 'sec:challenge',
-          created: { '@id': 'http://purl.org/dc/terms/created', '@type': 'xsd:dateTime' },
+          created: {
+            '@id': 'http://purl.org/dc/terms/created',
+            '@type': 'xsd:dateTime'
+          },
           domain: 'sec:domain',
-          expires: { '@id': 'sec:expiration', '@type': 'xsd:dateTime' },
+          expires: {
+            '@id': 'sec:expiration',
+            '@type': 'xsd:dateTime'
+          },
           jws: 'sec:jws',
           nonce: 'sec:nonce',
           proofPurpose: {
@@ -241,16 +362,31 @@ export const CONTEXTS = {
 
               sec: 'https://w3id.org/security#',
 
-              assertionMethod: { '@id': 'sec:assertionMethod', '@type': '@id', '@container': '@set' },
-              authentication: { '@id': 'sec:authenticationMethod', '@type': '@id', '@container': '@set' }
+              assertionMethod: {
+                '@id': 'sec:assertionMethod',
+                '@type': '@id',
+                '@container': '@set'
+              },
+              authentication: {
+                '@id': 'sec:authenticationMethod',
+                '@type': '@id',
+                '@container': '@set'
+              }
             }
           },
           proofValue: 'sec:proofValue',
-          verificationMethod: { '@id': 'sec:verificationMethod', '@type': '@id' }
+          verificationMethod: {
+            '@id': 'sec:verificationMethod',
+            '@type': '@id'
+          }
         }
       },
 
-      proof: { '@id': 'https://w3id.org/security#proof', '@type': '@id', '@container': '@graph' }
+      proof: {
+        '@id': 'https://w3id.org/security#proof',
+        '@type': '@id',
+        '@container': '@graph'
+      }
     }
   },
   verifiableCredentialExample: {
@@ -282,22 +418,37 @@ export const CONTEXTS = {
       primaryProof: 'ex:primaryProof',
       nonRevocationProof: 'ex:nonRevocationProof',
 
-      alumniOf: { '@id': 'schema:alumniOf', '@type': 'rdf:HTML' },
-      child: { '@id': 'ex:child', '@type': '@id' },
+      alumniOf: {
+        '@id': 'schema:alumniOf',
+        '@type': 'rdf:HTML'
+      },
+      child: {
+        '@id': 'ex:child',
+        '@type': '@id'
+      },
       degree: 'ex:degree',
       degreeType: 'ex:degreeType',
       degreeSchool: 'ex:degreeSchool',
       college: 'ex:college',
-      name: { '@id': 'schema:name', '@type': 'rdf:HTML' },
+      name: {
+        '@id': 'schema:name',
+        '@type': 'rdf:HTML'
+      },
       givenName: 'schema:givenName',
       familyName: 'schema:familyName',
-      parent: { '@id': 'ex:parent', '@type': '@id' },
+      parent: {
+        '@id': 'ex:parent',
+        '@type': '@id'
+      },
       referenceId: 'ex:referenceId',
       documentPresence: 'ex:documentPresence',
       evidenceDocument: 'ex:evidenceDocument',
       spouse: 'schema:spouse',
       subjectPresence: 'ex:subjectPresence',
-      verifier: { '@id': 'ex:verifier', '@type': '@id' }
+      verifier: {
+        '@id': 'ex:verifier',
+        '@type': '@id'
+      }
     }]
   },
   merkleProof2019: {
@@ -305,9 +456,15 @@ export const CONTEXTS = {
     '@context': {
       '@version': 1.1,
       challenge: 'sec:challenge',
-      created: { '@id': 'http://purl.org/dc/terms/created', '@type': 'xsd:dateTime' },
+      created: {
+        '@id': 'http://purl.org/dc/terms/created',
+        '@type': 'xsd:dateTime'
+      },
       domain: 'sec:domain',
-      expires: { '@id': 'sec:expiration', '@type': 'xsd:dateTime' },
+      expires: {
+        '@id': 'sec:expiration',
+        '@type': 'xsd:dateTime'
+      },
       jws: 'sec:jws',
       nonce: 'sec:nonce',
       proofPurpose: {
@@ -321,12 +478,327 @@ export const CONTEXTS = {
 
           sec: 'https://w3id.org/security#',
 
-          assertionMethod: { '@id': 'sec:assertionMethod', '@type': '@id', '@container': '@set' },
-          authentication: { '@id': 'sec:authenticationMethod', '@type': '@id', '@container': '@set' }
+          assertionMethod: {
+            '@id': 'sec:assertionMethod',
+            '@type': '@id',
+            '@container': '@set'
+          },
+          authentication: {
+            '@id': 'sec:authenticationMethod',
+            '@type': '@id',
+            '@container': '@set'
+          }
         }
       },
       proofValue: 'sec:proofValue',
-      verificationMethod: { '@id': 'sec:verificationMethod', '@type': '@id' }
+      verificationMethod: {
+        '@id': 'sec:verificationMethod',
+        '@type': '@id'
+      }
+    }
+  },
+  odrl: {
+    '@context': {
+      odrl: 'http://www.w3.org/ns/odrl/2/',
+      rdf: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
+      rdfs: 'http://www.w3.org/2000/01/rdf-schema#',
+      owl: 'http://www.w3.org/2002/07/owl#',
+      skos: 'http://www.w3.org/2004/02/skos/core#',
+      dct: 'http://purl.org/dc/terms/',
+      xsd: 'http://www.w3.org/2001/XMLSchema#',
+      vcard: 'http://www.w3.org/2006/vcard/ns#',
+      foaf: 'http://xmlns.com/foaf/0.1/',
+      schema: 'http://schema.org/',
+      cc: 'http://creativecommons.org/ns#',
+      uid: '@id',
+      type: '@type',
+      Policy: 'odrl:Policy',
+      Rule: 'odrl:Rule',
+      profile: {
+        '@type': '@id',
+        '@id': 'odrl:profile'
+      },
+      inheritFrom: {
+        '@type': '@id',
+        '@id': 'odrl:inheritFrom'
+      },
+      ConflictTerm: 'odrl:ConflictTerm',
+      conflict: {
+        '@type': '@vocab',
+        '@id': 'odrl:conflict'
+      },
+      perm: 'odrl:perm',
+      prohibit: 'odrl:prohibit',
+      invalid: 'odrl:invalid',
+      Agreement: 'odrl:Agreement',
+      Assertion: 'odrl:Assertion',
+      Offer: 'odrl:Offer',
+      Privacy: 'odrl:Privacy',
+      Request: 'odrl:Request',
+      Set: 'odrl:Set',
+      Ticket: 'odrl:Ticket',
+
+      Asset: 'odrl:Asset',
+      AssetCollection: 'odrl:AssetCollection',
+      relation: {
+        '@type': '@id',
+        '@id': 'odrl:relation'
+      },
+      hasPolicy: {
+        '@type': '@id',
+        '@id': 'odrl:hasPolicy'
+      },
+      target: {
+        '@type': '@id',
+        '@id': 'odrl:target'
+      },
+      output: {
+        '@type': '@id',
+        '@id': 'odrl:output'
+      },
+      partOf: {
+        '@type': '@id',
+        '@id': 'odrl:partOf'
+      },
+      source: {
+        '@type': '@id',
+        '@id': 'odrl:source'
+      },
+      Party: 'odrl:Party',
+      PartyCollection: 'odrl:PartyCollection',
+      function: {
+        '@type': '@vocab',
+        '@id': 'odrl:function'
+      },
+      PartyScope: 'odrl:PartyScope',
+      assignee: {
+        '@type': '@id',
+        '@id': 'odrl:assignee'
+      },
+      assigner: {
+        '@type': '@id',
+        '@id': 'odrl:assigner'
+      },
+      assigneeOf: {
+        '@type': '@id',
+        '@id': 'odrl:assigneeOf'
+      },
+      assignerOf: {
+        '@type': '@id',
+        '@id': 'odrl:assignerOf'
+      },
+      attributedParty: {
+        '@type': '@id',
+        '@id': 'odrl:attributedParty'
+      },
+      attributingParty: {
+        '@type': '@id',
+        '@id': 'odrl:attributingParty'
+      },
+      compensatedParty: {
+        '@type': '@id',
+        '@id': 'odrl:compensatedParty'
+      },
+      compensatingParty: {
+        '@type': '@id',
+        '@id': 'odrl:compensatingParty'
+      },
+      consentingParty: {
+        '@type': '@id',
+        '@id': 'odrl:consentingParty'
+      },
+      consentedParty: {
+        '@type': '@id',
+        '@id': 'odrl:consentedParty'
+      },
+      informedParty: {
+        '@type': '@id',
+        '@id': 'odrl:informedParty'
+      },
+      informingParty: {
+        '@type': '@id',
+        '@id': 'odrl:informingParty'
+      },
+      trackingParty: {
+        '@type': '@id',
+        '@id': 'odrl:trackingParty'
+      },
+      trackedParty: {
+        '@type': '@id',
+        '@id': 'odrl:trackedParty'
+      },
+      contractingParty: {
+        '@type': '@id',
+        '@id': 'odrl:contractingParty'
+      },
+      contractedParty: {
+        '@type': '@id',
+        '@id': 'odrl:contractedParty'
+      },
+      Action: 'odrl:Action',
+      action: {
+        '@type': '@vocab',
+        '@id': 'odrl:action'
+      },
+      includedIn: {
+        '@type': '@id',
+        '@id': 'odrl:includedIn'
+      },
+      implies: {
+        '@type': '@id',
+        '@id': 'odrl:implies'
+      },
+      Permission: 'odrl:Permission',
+      permission: {
+        '@type': '@id',
+        '@id': 'odrl:permission'
+      },
+      Prohibition: 'odrl:Prohibition',
+      prohibition: {
+        '@type': '@id',
+        '@id': 'odrl:prohibition'
+      },
+      obligation: {
+        '@type': '@id',
+        '@id': 'odrl:obligation'
+      },
+      use: 'odrl:use',
+      grantUse: 'odrl:grantUse',
+      aggregate: 'odrl:aggregate',
+      annotate: 'odrl:annotate',
+      anonymize: 'odrl:anonymize',
+      archive: 'odrl:archive',
+      concurrentUse: 'odrl:concurrentUse',
+      derive: 'odrl:derive',
+      digitize: 'odrl:digitize',
+      display: 'odrl:display',
+      distribute: 'odrl:distribute',
+      execute: 'odrl:execute',
+      extract: 'odrl:extract',
+      give: 'odrl:give',
+      index: 'odrl:index',
+      install: 'odrl:install',
+      modify: 'odrl:modify',
+      move: 'odrl:move',
+      play: 'odrl:play',
+      present: 'odrl:present',
+      print: 'odrl:print',
+      read: 'odrl:read',
+      reproduce: 'odrl:reproduce',
+      sell: 'odrl:sell',
+      stream: 'odrl:stream',
+      textToSpeech: 'odrl:textToSpeech',
+      transfer: 'odrl:transfer',
+      transform: 'odrl:transform',
+      translate: 'odrl:translate',
+
+      Duty: 'odrl:Duty',
+      duty: {
+        '@type': '@id',
+        '@id': 'odrl:duty'
+      },
+      consequence: {
+        '@type': '@id',
+        '@id': 'odrl:consequence'
+      },
+      remedy: {
+        '@type': '@id',
+        '@id': 'odrl:remedy'
+      },
+      acceptTracking: 'odrl:acceptTracking',
+      attribute: 'odrl:attribute',
+      compensate: 'odrl:compensate',
+      delete: 'odrl:delete',
+      ensureExclusivity: 'odrl:ensureExclusivity',
+      include: 'odrl:include',
+      inform: 'odrl:inform',
+      nextPolicy: 'odrl:nextPolicy',
+      obtainConsent: 'odrl:obtainConsent',
+      reviewPolicy: 'odrl:reviewPolicy',
+      uninstall: 'odrl:uninstall',
+      watermark: 'odrl:watermark',
+
+      Constraint: 'odrl:Constraint',
+      LogicalConstraint: 'odrl:LogicalConstraint',
+      constraint: {
+        '@type': '@id',
+        '@id': 'odrl:constraint'
+      },
+      refinement: {
+        '@type': '@id',
+        '@id': 'odrl:refinement'
+      },
+      Operator: 'odrl:Operator',
+      operator: {
+        '@type': '@vocab',
+        '@id': 'odrl:operator'
+      },
+      RightOperand: 'odrl:RightOperand',
+      rightOperand: 'odrl:rightOperand',
+      rightOperandReference: {
+        '@type': 'xsd:anyURI',
+        '@id': 'odrl:rightOperandReference'
+      },
+      LeftOperand: 'odrl:LeftOperand',
+      leftOperand: {
+        '@type': '@vocab',
+        '@id': 'odrl:leftOperand'
+      },
+      unit: 'odrl:unit',
+      dataType: {
+        '@type': 'xsd:anyType',
+        '@id': 'odrl:datatype'
+      },
+      status: 'odrl:status',
+      absolutePosition: 'odrl:absolutePosition',
+      absoluteSpatialPosition: 'odrl:absoluteSpatialPosition',
+      absoluteTemporalPosition: 'odrl:absoluteTemporalPosition',
+      absoluteSize: 'odrl:absoluteSize',
+      count: 'odrl:count',
+      dateTime: 'odrl:dateTime',
+      delayPeriod: 'odrl:delayPeriod',
+      deliveryChannel: 'odrl:deliveryChannel',
+      elapsedTime: 'odrl:elapsedTime',
+      event: 'odrl:event',
+      fileFormat: 'odrl:fileFormat',
+      industry: 'odrl:industry:',
+      language: 'odrl:language',
+      media: 'odrl:media',
+      meteredTime: 'odrl:meteredTime',
+      payAmount: 'odrl:payAmount',
+      percentage: 'odrl:percentage',
+      product: 'odrl:product',
+      purpose: 'odrl:purpose',
+      recipient: 'odrl:recipient',
+      relativePosition: 'odrl:relativePosition',
+      relativeSpatialPosition: 'odrl:relativeSpatialPosition',
+      relativeTemporalPosition: 'odrl:relativeTemporalPosition',
+      relativeSize: 'odrl:relativeSize',
+      resolution: 'odrl:resolution',
+      spatial: 'odrl:spatial',
+      spatialCoordinates: 'odrl:spatialCoordinates',
+      systemDevice: 'odrl:systemDevice',
+      timeInterval: 'odrl:timeInterval',
+      unitOfCount: 'odrl:unitOfCount',
+      version: 'odrl:version',
+      virtualLocation: 'odrl:virtualLocation',
+      eq: 'odrl:eq',
+      gt: 'odrl:gt',
+      gteq: 'odrl:gteq',
+      lt: 'odrl:lt',
+      lteq: 'odrl:lteq',
+      neq: 'odrl:neg',
+      isA: 'odrl:isA',
+      hasPart: 'odrl:hasPart',
+      isPartOf: 'odrl:isPartOf',
+      isAllOf: 'odrl:isAllOf',
+      isAnyOf: 'odrl:isAnyOf',
+      isNoneOf: 'odrl:isNoneOf',
+      or: 'odrl:or',
+      xone: 'odrl:xone',
+      and: 'odrl:and',
+      andSequence: 'odrl:andSequence',
+      policyUsage: 'odrl:policyUsage'
     }
   }
 };
diff --git a/src/explorers/bitcoin/bitpay.ts b/src/explorers/bitcoin/bitpay.ts
deleted file mode 100644
index b414586..0000000
--- a/src/explorers/bitcoin/bitpay.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { timestampToDateObject } from '../../utils/date';
-import { ExplorerAPI, ExplorerURLs, IParsingFunctionAPI } from '../../models/Explorers';
-import { TransactionData } from '../../models/TransactionData';
-import { TRANSACTION_APIS, TRANSACTION_ID_PLACEHOLDER } from '../../constants/api';
-import CONFIG from '../../constants/config';
-import { BLOCKCHAINS } from '../../constants/blockchains';
-
-// TODO: use tests/explorers/mocks/mockBitpayResponse as type
-function parsingFunction ({ jsonResponse }: IParsingFunctionAPI): TransactionData {
-  if (jsonResponse.confirmations < CONFIG.MininumConfirmations) {
-    throw new Error('Number of transaction confirmations were less than the minimum required, according to Bitpay API');
-  }
-  const time: Date = timestampToDateObject(jsonResponse.blocktime);
-  const outputs = jsonResponse.vout;
-  const lastOutput = outputs[outputs.length - 1];
-  const issuingAddress: string = jsonResponse.vout[0].scriptPubKey.addresses[0];
-  const remoteHash: string = stripHashPrefix(lastOutput.scriptPubKey.hex, BLOCKCHAINS.bitcoin.prefixes);
-  const revokedAddresses: string[] = outputs
-    .filter(output => !!output.spentTxId)
-    .map(output => output.scriptPubKey.addresses[0]);
-
-  return {
-    remoteHash,
-    issuingAddress,
-    time,
-    revokedAddresses
-  };
-}
-
-const serviceURL: ExplorerURLs = {
-  main: `https://insight.bitpay.com/api/tx/${TRANSACTION_ID_PLACEHOLDER}`,
-  test: `https://api.bitcore.io/api/BTC/testnet/tx/${TRANSACTION_ID_PLACEHOLDER}`
-};
-
-export const explorerApi: ExplorerAPI = {
-  serviceURL,
-  serviceName: TRANSACTION_APIS.bitpay,
-  parsingFunction,
-  priority: -1
-};
diff --git a/src/explorers/bitcoin/blockcypher.ts b/src/explorers/bitcoin/blockcypher.ts
deleted file mode 100644
index df82b51..0000000
--- a/src/explorers/bitcoin/blockcypher.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { dateToUnixTimestamp } from '../../utils/date';
-import { ExplorerAPI, ExplorerURLs, IParsingFunctionAPI } from '../../models/Explorers';
-import { TransactionData } from '../../models/TransactionData';
-import { TRANSACTION_APIS, TRANSACTION_ID_PLACEHOLDER } from '../../constants/api';
-import CONFIG from '../../constants/config';
-import { BLOCKCHAINS } from '../../constants/blockchains';
-
-// TODO: use tests/explorers/mocks/mockBlockcypher as type
-function parsingFunction ({ jsonResponse }: IParsingFunctionAPI): TransactionData {
-  if (jsonResponse.confirmations < CONFIG.MininumConfirmations) {
-    throw new Error('Number of transaction confirmations were less than the minimum required, according to Blockcypher API');
-  }
-  const time: Date = dateToUnixTimestamp(jsonResponse.received);
-  const outputs = jsonResponse.outputs;
-  const lastOutput = outputs[outputs.length - 1];
-  const issuingAddress: string = jsonResponse.inputs[0].addresses[0];
-  const remoteHash: string = stripHashPrefix(lastOutput.script, BLOCKCHAINS.bitcoin.prefixes);
-  const revokedAddresses: string[] = outputs
-    .filter(output => !!output.spent_by)
-    .map(output => output.addresses[0]);
-  return {
-    remoteHash,
-    issuingAddress,
-    time,
-    revokedAddresses
-  };
-}
-
-const serviceURL: ExplorerURLs = {
-  main: `https://api.blockcypher.com/v1/btc/main/txs/${TRANSACTION_ID_PLACEHOLDER}?limit=500`,
-  test: `https://api.blockcypher.com/v1/btc/test3/txs/${TRANSACTION_ID_PLACEHOLDER}?limit=500`
-};
-
-export const explorerApi: ExplorerAPI = {
-  serviceURL,
-  serviceName: TRANSACTION_APIS.blockcypher,
-  parsingFunction,
-  priority: -1
-};
diff --git a/src/explorers/bitcoin/blockexplorer.ts b/src/explorers/bitcoin/blockexplorer.ts
deleted file mode 100644
index 25facd7..0000000
--- a/src/explorers/bitcoin/blockexplorer.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { timestampToDateObject } from '../../utils/date';
-import { ExplorerAPI, ExplorerURLs, IParsingFunctionAPI } from '../../models/Explorers';
-import { TransactionData } from '../../models/TransactionData';
-import { TRANSACTION_APIS, TRANSACTION_ID_PLACEHOLDER } from '../../constants/api';
-import { BLOCKCHAINS } from '../../constants/blockchains';
-import CONFIG from '../../constants/config';
-
-// TODO: use tests/explorers/mocks/mockBlockexplorer as type
-function parsingFunction ({ jsonResponse }: IParsingFunctionAPI): TransactionData {
-  if (jsonResponse.confirmations < CONFIG.MininumConfirmations) {
-    throw new Error('Number of transaction confirmations were less than the minimum required, according to Blockexplorer API');
-  }
-  const time: Date = timestampToDateObject(jsonResponse.blocktime);
-  const outputs = jsonResponse.vout;
-  const lastOutput = outputs[outputs.length - 1];
-  const issuingAddress: string = jsonResponse.vout[0].scriptPubKey.addresses[0];
-  const remoteHash: string = stripHashPrefix(lastOutput.scriptPubKey.hex, BLOCKCHAINS.bitcoin.prefixes);
-  const revokedAddresses: string[] = outputs
-    .filter(output => !!output.spentTxId)
-    .map(output => output.scriptPubKey.addresses[0]);
-  return {
-    remoteHash,
-    issuingAddress,
-    time,
-    revokedAddresses
-  };
-}
-
-const serviceURL: ExplorerURLs = {
-  main: `https://blockexplorer.com/api/tx/${TRANSACTION_ID_PLACEHOLDER}`,
-  test: `https://testnet.blockexplorer.com/api/tx/${TRANSACTION_ID_PLACEHOLDER}`
-};
-
-export const explorerApi: ExplorerAPI = {
-  serviceURL,
-  serviceName: TRANSACTION_APIS.blockexplorer,
-  parsingFunction,
-  priority: -1
-};
diff --git a/src/explorers/bitcoin/blockstream.ts b/src/explorers/bitcoin/blockstream.ts
deleted file mode 100644
index 74a00cf..0000000
--- a/src/explorers/bitcoin/blockstream.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { timestampToDateObject } from '../../utils/date';
-import { ExplorerAPI, ExplorerURLs, IParsingFunctionAPI } from '../../models/Explorers';
-import { TransactionData } from '../../models/TransactionData';
-import { TRANSACTION_APIS, TRANSACTION_ID_PLACEHOLDER } from '../../constants/api';
-import { BLOCKCHAINS } from '../../constants/blockchains';
-
-// TODO: use tests/explorers/mocks/mockBlockstreamResponse as type
-function parsingFunction ({ jsonResponse }: IParsingFunctionAPI): TransactionData {
-  if (!jsonResponse.status.confirmed) {
-    throw new Error('Number of transaction confirmations were less than the minimum required, according to Blockstream API');
-  }
-  const time: Date = timestampToDateObject(jsonResponse.status.block_time);
-  const outputs = jsonResponse.vout;
-  const lastOutput = outputs[outputs.length - 1];
-  const issuingAddress: string = jsonResponse.vout[0].scriptpubkey_address;
-  const remoteHash: string = stripHashPrefix(lastOutput.scriptpubkey, BLOCKCHAINS.bitcoin.prefixes);
-  const revokedAddresses: string[] = outputs
-    .filter(output => !!output.scriptpubkey_address)
-    .map(output => output.scriptpubkey_address);
-  return {
-    remoteHash,
-    issuingAddress,
-    time,
-    revokedAddresses
-  };
-}
-
-const serviceURL: ExplorerURLs = {
-  main: `https://blockstream.info/api/tx/${TRANSACTION_ID_PLACEHOLDER}`,
-  test: `https://blockstream.info/testnet/api/tx/${TRANSACTION_ID_PLACEHOLDER}`
-};
-
-export const explorerApi: ExplorerAPI = {
-  serviceURL,
-  serviceName: TRANSACTION_APIS.blockstream,
-  parsingFunction,
-  priority: -1
-};
diff --git a/src/explorers/ethereum/blockcypher.ts b/src/explorers/ethereum/blockcypher.ts
deleted file mode 100644
index 3798932..0000000
--- a/src/explorers/ethereum/blockcypher.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { BLOCKCHAINS } from '../../constants/blockchains';
-import { TransactionData } from '../../models/TransactionData';
-import { TRANSACTION_APIS, TRANSACTION_ID_PLACEHOLDER } from '../../constants/api';
-import { ExplorerAPI, ExplorerURLs, IParsingFunctionAPI } from '../../models/Explorers';
-import CONFIG from '../../constants/config';
-import { dateToUnixTimestamp } from '../../utils/date';
-import { prependHashPrefix } from '../../utils/prependHashPrefix';
-
-const serviceURL: ExplorerURLs = {
-  main: `https://api.blockcypher.com/v1/eth/main/txs/${TRANSACTION_ID_PLACEHOLDER}?limit=500`,
-  test: `https://api.blockcypher.com/v1/beth/test/txs/${TRANSACTION_ID_PLACEHOLDER}?limit=500`
-};
-
-// TODO: use tests/explorers/mocks/mockBlockcypherResponse as type
-function parsingFunction ({ jsonResponse }: IParsingFunctionAPI): TransactionData {
-  if (jsonResponse.confirmations < CONFIG.MininumConfirmations) {
-    // TODO: not tested
-    throw new Error('Not enough');
-  }
-
-  const time = dateToUnixTimestamp(jsonResponse.received);
-  const outputs = jsonResponse.outputs;
-  const lastOutput = outputs[outputs.length - 1];
-  let issuingAddress: string = jsonResponse.inputs[0].addresses[0];
-  const remoteHash = stripHashPrefix(lastOutput.script, BLOCKCHAINS.ethmain.prefixes);
-  issuingAddress = prependHashPrefix(issuingAddress, BLOCKCHAINS.ethmain.prefixes);
-  const revokedAddresses = outputs
-    .filter(output => !!output.spent_by)
-    .map(output => output.addresses[0]);
-  return {
-    remoteHash,
-    issuingAddress,
-    time,
-    revokedAddresses
-  };
-}
-
-export const explorerApi: ExplorerAPI = {
-  serviceURL,
-  serviceName: TRANSACTION_APIS.blockcypher,
-  parsingFunction,
-  priority: -1
-};
diff --git a/src/explorers/ethereum/etherscan.ts b/src/explorers/ethereum/etherscan.ts
deleted file mode 100644
index 546fedf..0000000
--- a/src/explorers/ethereum/etherscan.ts
+++ /dev/null
@@ -1,113 +0,0 @@
-import { request } from '../../services/request';
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { buildTransactionServiceUrl } from '../../services/transaction-apis';
-import { BLOCKCHAINS, isTestChain, SupportedChains } from '../../constants/blockchains';
-import { TransactionData } from '../../models/TransactionData';
-import { TRANSACTION_APIS, TRANSACTION_ID_PLACEHOLDER } from '../../constants/api';
-import { ExplorerAPI, ExplorerURLs, IParsingFunctionAPI } from '../../models/Explorers';
-import CONFIG from '../../constants/config';
-
-const MAIN_API_BASE_URL = 'https://api.etherscan.io/api?module=proxy';
-const TEST_API_BASE_URL = 'https://api-ropsten.etherscan.io/api?module=proxy';
-const serviceURL: ExplorerURLs = {
-  main: `${MAIN_API_BASE_URL}&action=eth_getTransactionByHash&txhash=${TRANSACTION_ID_PLACEHOLDER}`,
-  test: `${TEST_API_BASE_URL}&action=eth_getTransactionByHash&txhash=${TRANSACTION_ID_PLACEHOLDER}`
-};
-
-// TODO: use tests/explorers/mocks/mockEtherscanResponse as type
-async function parsingFunction ({ jsonResponse, chain, key, keyPropertyName }: IParsingFunctionAPI): Promise<TransactionData> {
-  const getBlockByNumberServiceUrls: Partial<ExplorerAPI> = {
-    serviceURL: {
-      main: `${MAIN_API_BASE_URL}&action=eth_getBlockByNumber&boolean=true&tag=${TRANSACTION_ID_PLACEHOLDER}`,
-      test: `${TEST_API_BASE_URL}&action=eth_getBlockByNumber&boolean=true&tag=${TRANSACTION_ID_PLACEHOLDER}`
-    }
-  };
-  const getBlockNumberServiceUrls: Partial<ExplorerAPI> = {
-    serviceURL: {
-      main: `${MAIN_API_BASE_URL}&action=eth_blockNumber`,
-      test: `${TEST_API_BASE_URL}&action=eth_blockNumber`
-    }
-  };
-
-  function parseEtherScanResponse (jsonResponse, block): TransactionData {
-    const data = jsonResponse.result;
-    const time: Date = new Date(parseInt(block.timestamp, 16) * 1000);
-    const issuingAddress: string = data.from;
-    const remoteHash = stripHashPrefix(data.input, BLOCKCHAINS.ethmain.prefixes); // remove '0x'
-
-    // The method of checking revocations by output spent do not work with Ethereum.
-    // There are no input/outputs, only balances.
-    return {
-      remoteHash,
-      issuingAddress,
-      time,
-      revokedAddresses: []
-    };
-  }
-
-  async function getEtherScanBlock (jsonResponse, chain: SupportedChains): Promise<any> {
-    const data = jsonResponse.result;
-    const blockNumber = data.blockNumber;
-    const requestUrl = buildTransactionServiceUrl({
-      // eslint-disable-next-line @typescript-eslint/consistent-type-assertions
-      explorerAPI: {
-        ...getBlockByNumberServiceUrls,
-        key,
-        keyPropertyName
-      } as ExplorerAPI,
-      transactionId: blockNumber,
-      isTestApi: isTestChain(chain)
-    });
-
-    try {
-      const response = await request({ url: requestUrl });
-      const responseData = JSON.parse(response);
-      const blockData = responseData.result;
-
-      await checkEtherScanConfirmations(chain, blockNumber);
-      return blockData;
-    } catch (err) {
-      throw new Error('Unable to get remote hash');
-    }
-  }
-
-  async function checkEtherScanConfirmations (chain: SupportedChains, blockNumber: number): Promise<number> {
-    const requestUrl: string = buildTransactionServiceUrl({
-      // eslint-disable-next-line @typescript-eslint/consistent-type-assertions
-      explorerAPI: {
-        ...getBlockNumberServiceUrls,
-        key,
-        keyPropertyName
-      } as ExplorerAPI,
-      isTestApi: isTestChain(chain)
-    });
-
-    let response: string;
-    try {
-      response = await request({ url: requestUrl });
-    } catch (err) {
-      // TODO: not tested?
-      throw new Error('Unable to get remote hash');
-    }
-
-    const responseData = JSON.parse(response);
-    const currentBlockCount: number = responseData.result;
-
-    if (currentBlockCount - blockNumber < CONFIG.MininumConfirmations) {
-      // TODO: not tested
-      throw new Error('Not enough');
-    }
-    return currentBlockCount;
-  }
-
-  // Parse block to get timestamp first, then create TransactionData
-  const blockResponse = await getEtherScanBlock(jsonResponse, chain);
-  return parseEtherScanResponse(jsonResponse, blockResponse);
-}
-
-export const explorerApi: ExplorerAPI = {
-  serviceURL,
-  serviceName: TRANSACTION_APIS.etherscan,
-  parsingFunction,
-  priority: -1
-};
diff --git a/src/explorers/explorer.ts b/src/explorers/explorer.ts
deleted file mode 100644
index 85f4856..0000000
--- a/src/explorers/explorer.ts
+++ /dev/null
@@ -1,66 +0,0 @@
-import { buildTransactionServiceUrl } from '../services/transaction-apis';
-import { request } from '../services/request';
-import { isTestChain, SupportedChains } from '../constants/blockchains';
-import { TransactionData } from '../models/TransactionData';
-import { ExplorerAPI, TExplorerFunctionsArray } from '../models/Explorers';
-import { explorerApi as EtherscanApi } from './ethereum/etherscan';
-import { explorerApi as BlockCypherETHApi } from './ethereum/blockcypher';
-import { explorerApi as BlockExplorerApi } from './bitcoin/blockexplorer';
-import { explorerApi as BlockstreamApi } from './bitcoin/blockstream';
-import { explorerApi as BlockCypherBTCApi } from './bitcoin/blockcypher';
-import { explorerApi as BitPayApi } from './bitcoin/bitpay';
-
-export function explorerFactory (TransactionAPIArray: ExplorerAPI[]): TExplorerFunctionsArray {
-  return TransactionAPIArray
-    .map(explorerAPI => (
-      {
-        getTxData: async (transactionId, chain) => await getTransactionFromApi(explorerAPI, transactionId, chain),
-        priority: explorerAPI.priority
-      }
-    ));
-}
-
-export async function getTransactionFromApi (
-  explorerAPI: ExplorerAPI,
-  transactionId: string,
-  chain: SupportedChains
-): Promise<TransactionData> {
-  const requestUrl = buildTransactionServiceUrl({
-    explorerAPI,
-    transactionId,
-    isTestApi: isTestChain(chain)
-  });
-
-  try {
-    const response = await request({ url: requestUrl });
-    return await explorerAPI.parsingFunction({
-      jsonResponse: JSON.parse(response),
-      chain,
-      ...explorerAPI
-    });
-  } catch (err) {
-    throw new Error('Unable to get remote hash');
-  }
-}
-
-const BitcoinTransactionAPIArray = [
-  BlockCypherBTCApi,
-  BitPayApi,
-  BlockExplorerApi,
-  BlockstreamApi
-];
-
-const EthereumTransactionAPIArray = [
-  EtherscanApi,
-  BlockCypherETHApi
-];
-
-const BlockchainExplorersWithSpentOutputInfo = [
-  BlockCypherBTCApi
-];
-
-export {
-  BitcoinTransactionAPIArray,
-  EthereumTransactionAPIArray,
-  BlockchainExplorersWithSpentOutputInfo
-};
diff --git a/src/explorers/index.ts b/src/explorers/index.ts
deleted file mode 100644
index 0081cbe..0000000
--- a/src/explorers/index.ts
+++ /dev/null
@@ -1,108 +0,0 @@
-import {
-  BitcoinTransactionAPIArray as BitcoinExplorers,
-  EthereumTransactionAPIArray as EthereumExplorers,
-  explorerFactory
-} from './explorer';
-import { TRANSACTION_APIS } from '../constants/api';
-import { ExplorerAPI, TExplorerFunctionsArray } from '../models/Explorers';
-import { ethereumRPCParsingFunction } from './rpc/ethereum';
-import { bitcoinRPCParsingFunction } from './rpc/bitcoin';
-
-export interface TDefaultExplorersPerBlockchain {
-  bitcoin: TExplorerFunctionsArray;
-  ethereum: TExplorerFunctionsArray;
-}
-
-export type TExplorerAPIs = TDefaultExplorersPerBlockchain & {
-  custom?: TExplorerFunctionsArray;
-};
-
-function cleanupExplorerAPIs (explorerAPIs: ExplorerAPI[], indexes: number[]): void {
-  indexes.forEach(index => explorerAPIs.splice(index, 1)); // remove modified explorer to avoid setting them in the custom option later
-}
-
-function validateOverwritingExplorer (explorerAPI: ExplorerAPI): boolean {
-  if (explorerAPI.key && !explorerAPI.keyPropertyName) {
-    throw new Error(`Property keyPropertyName is not set for ${explorerAPI.serviceName}. Cannot pass the key property to the service.`);
-  }
-  return true;
-}
-
-const overwrittenIndexes: number[] = [];
-
-export function overwriteDefaultExplorers (explorerAPIs: ExplorerAPI[] = [], defaultExplorers: ExplorerAPI[] = [], lastSetOfExplorers = false): ExplorerAPI[] {
-  const userSetExplorerAPIsName = explorerAPIs
-    .map(explorerAPI => explorerAPI.serviceName)
-    .filter(name => !!name)
-    .filter(name => !!TRANSACTION_APIS[name]);
-
-  if (userSetExplorerAPIsName.length) {
-    return defaultExplorers.reduce((overwrittenExplorers, defaultExplorerAPI) => {
-      if (userSetExplorerAPIsName.includes(defaultExplorerAPI.serviceName)) {
-        const immutableExplorerAPI = Object.assign({}, defaultExplorerAPI);
-        const customSetExplorerAPI = explorerAPIs.find(customExplorerAPI => customExplorerAPI.serviceName === defaultExplorerAPI.serviceName);
-        if (validateOverwritingExplorer(customSetExplorerAPI)) {
-          const overwrittenExplorerAPI = Object.assign(immutableExplorerAPI, customSetExplorerAPI);
-          overwrittenExplorers.push(overwrittenExplorerAPI);
-          const explorerAPIsIndex = explorerAPIs.findIndex(explorerAPI => explorerAPI.serviceName === overwrittenExplorerAPI.serviceName);
-          if (!overwrittenIndexes.includes(explorerAPIsIndex)) {
-            overwrittenIndexes.push(explorerAPIsIndex);
-          }
-        }
-      } else {
-        overwrittenExplorers.push(defaultExplorerAPI);
-      }
-      if (lastSetOfExplorers) {
-        cleanupExplorerAPIs(explorerAPIs, overwrittenIndexes);
-      }
-      return overwrittenExplorers;
-    }, []);
-  }
-
-  return defaultExplorers;
-}
-
-export function getDefaultExplorers (explorerAPIs?: ExplorerAPI[]): TDefaultExplorersPerBlockchain {
-  return {
-    bitcoin: explorerFactory(overwriteDefaultExplorers(explorerAPIs, BitcoinExplorers)),
-    ethereum: explorerFactory(overwriteDefaultExplorers(explorerAPIs, EthereumExplorers))
-  };
-}
-
-function rpcFactory (explorerAPIs: ExplorerAPI[]): TExplorerFunctionsArray {
-  return explorerAPIs.map(explorerAPI => {
-    if (!explorerAPI.parsingFunction) {
-      explorerAPI.parsingFunction = explorerAPI.chainType === 'btc' ? bitcoinRPCParsingFunction : ethereumRPCParsingFunction;
-    }
-    return explorerAPI;
-  }).map(explorerAPI => (
-    {
-      getTxData: async (transactionId) => await explorerAPI.parsingFunction({
-        ...explorerAPI,
-        transactionId
-      }),
-      priority: explorerAPI.priority
-    }
-  ));
-}
-
-export function getRPCExplorers (customExplorerAPIs?: ExplorerAPI[]): Partial<TExplorerAPIs> {
-  return {
-    custom: rpcFactory(customExplorerAPIs)
-  };
-}
-
-export function prepareExplorerAPIs (customExplorerAPIs: ExplorerAPI[]): TExplorerAPIs {
-  const { bitcoin, ethereum } = getDefaultExplorers(customExplorerAPIs);
-  const { custom: rpcCustomExplorers } = getRPCExplorers(customExplorerAPIs.filter(e => e.apiType === 'rpc'));
-  const restCustomExplorers = explorerFactory(customExplorerAPIs.filter(e => e.apiType !== 'rpc'));
-
-  return {
-    bitcoin,
-    ethereum,
-    custom: [
-      ...rpcCustomExplorers,
-      ...restCustomExplorers
-    ]
-  };
-}
diff --git a/src/explorers/rpc/bitcoin.ts b/src/explorers/rpc/bitcoin.ts
deleted file mode 100644
index 0e448f9..0000000
--- a/src/explorers/rpc/bitcoin.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-import { TransactionData } from '../../models/TransactionData';
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { timestampToDateObject } from '../../utils/date';
-import { request } from '../../services/request';
-import { IParsingFunctionAPI } from '../../models/Explorers';
-
-export async function bitcoinRPCParsingFunction ({ serviceUrl, transactionId }: IParsingFunctionAPI): Promise<TransactionData> {
-  const getRawTransactionParams = {
-    method: 'getrawtransaction',
-    jsonrpc: '2.0',
-    id: 'rpctest',
-    params: [
-      transactionId,
-      true
-    ]
-  };
-  const resultRawTransaction = await request({
-    url: serviceUrl,
-    body: getRawTransactionParams,
-    method: 'POST'
-  });
-
-  const transaction = JSON.parse(resultRawTransaction).result;
-  const issuingAddress = transaction.vout[0].scriptPubKey.addresses[0];
-  const remoteHash = stripHashPrefix(transaction.vout[1].scriptPubKey.asm, ['6a20', 'OP_RETURN ']);
-  const time = timestampToDateObject(transaction.blocktime);
-  // after research, this only seems to be used in v1.2 of blockcerts.
-  const revokedAddresses = transaction.vout
-    .filter(output => !!output.scriptPubKey.addresses)
-    .map(output => output.scriptPubKey.addresses)
-    .flat();
-
-  return {
-    issuingAddress,
-    remoteHash,
-    time,
-    revokedAddresses
-  };
-}
diff --git a/src/explorers/rpc/ethereum.ts b/src/explorers/rpc/ethereum.ts
deleted file mode 100644
index d61366c..0000000
--- a/src/explorers/rpc/ethereum.ts
+++ /dev/null
@@ -1,53 +0,0 @@
-import { TransactionData } from '../../models/TransactionData';
-import { stripHashPrefix } from '../../utils/stripHashPrefix';
-import { request } from '../../services/request';
-import { IParsingFunctionAPI } from '../../models/Explorers';
-
-export async function ethereumRPCParsingFunction ({ serviceUrl, transactionId }: IParsingFunctionAPI): Promise<TransactionData> {
-  const transactionByHashParams = {
-    method: 'eth_getTransactionByHash',
-    jsonrpc: '2.0',
-    id: 'getbyhash',
-    params: [
-      '0x' + transactionId
-    ]
-  };
-  const resultTransactionByHash = await request({
-    url: serviceUrl,
-    body: transactionByHashParams,
-    method: 'POST'
-  });
-
-  const transactionByHash = JSON.parse(resultTransactionByHash);
-
-  const blockByNumberParams = {
-    method: 'eth_getBlockByNumber',
-    jsonrpc: '2.0',
-    id: 'blockbynumber',
-    params: [
-      transactionByHash.result.blockNumber,
-      true
-    ]
-  };
-  const resultBlockByNumber = await request({
-    url: serviceUrl,
-    body: blockByNumberParams,
-    method: 'POST'
-  });
-  // check confirm validity see cvjs etherscan
-
-  const block = JSON.parse(resultBlockByNumber);
-
-  const txData = transactionByHash.result;
-  const blockData = block.result;
-  const time = new Date(parseInt(blockData.timestamp, 16) * 1000);
-  const issuingAddress = txData.from;
-  const remoteHash = stripHashPrefix(txData.input, ['0x']); // remove '0x'
-
-  return {
-    remoteHash,
-    issuingAddress,
-    time,
-    revokedAddresses: []
-  };
-}
diff --git a/src/helpers/lookForTx.ts b/src/helpers/lookForTx.ts
deleted file mode 100644
index 59ac547..0000000
--- a/src/helpers/lookForTx.ts
+++ /dev/null
@@ -1,115 +0,0 @@
-import { SupportedChains, BLOCKCHAINS } from '../constants/blockchains';
-import CONFIG from '../constants/config';
-import PromiseProperRace from './promiseProperRace';
-import { TransactionData } from '../models/TransactionData';
-import { TExplorerAPIs } from '../explorers';
-import { TExplorerFunctionsArray } from '../models/Explorers';
-
-export function getExplorersByChain (chain: SupportedChains, explorerAPIs: TExplorerAPIs): TExplorerFunctionsArray {
-  switch (chain) {
-    case BLOCKCHAINS[SupportedChains.Bitcoin].code:
-    case BLOCKCHAINS[SupportedChains.Regtest].code:
-    case BLOCKCHAINS[SupportedChains.Testnet].code:
-    case BLOCKCHAINS[SupportedChains.Mocknet].code:
-      return explorerAPIs.bitcoin;
-    case BLOCKCHAINS[SupportedChains.Ethmain].code:
-    case BLOCKCHAINS[SupportedChains.Ethropst].code:
-    case BLOCKCHAINS[SupportedChains.Ethrinkeby].code:
-      return explorerAPIs.ethereum;
-    default:
-      if (!explorerAPIs.custom?.length) {
-        throw new Error('Chain is not natively supported. Use custom explorers to retrieve tx data.');
-      }
-      return explorerAPIs.custom;
-  }
-}
-
-// eslint-disable-next-line @typescript-eslint/promise-function-async
-async function runPromiseRace (promises): Promise<TransactionData> {
-  let winners;
-  try {
-    winners = await PromiseProperRace(promises, CONFIG.MinimumBlockchainExplorers);
-  } catch (err) {
-    throw new Error(`Transaction lookup error: ${err.message as string}`);
-  }
-
-  if (!winners || winners.length === 0) {
-    // eslint-disable-next-line @typescript-eslint/return-await
-    throw new Error('Could not confirm transaction data.');
-  }
-
-  const firstResponse = winners[0];
-  for (let i = 1; i < winners.length; i++) {
-    const thisResponse = winners[i];
-    if (firstResponse.issuingAddress !== thisResponse.issuingAddress) {
-      throw new Error('Issuing addresses do not match consistently');
-    }
-    if (firstResponse.remoteHash !== thisResponse.remoteHash) {
-      throw new Error('Remote hashes do not match consistently');
-    }
-  }
-  return firstResponse;
-}
-
-type PromiseRaceQueue = TExplorerFunctionsArray[];
-
-function buildQueuePromises (queue, transactionId, chain): any[] {
-  if (CONFIG.MinimumBlockchainExplorers < 0 || CONFIG.MinimumBlockchainExplorers > queue.length) {
-    throw new Error('Invalid application configuration; check the CONFIG.MinimumBlockchainExplorers configuration value');
-  }
-
-  const promises: any[] = [];
-  const limit: number = CONFIG.Race ? queue.length : CONFIG.MinimumBlockchainExplorers;
-  for (let i = 0; i < limit; i++) {
-    promises.push(queue[i].getTxData(transactionId, chain));
-  }
-
-  return promises;
-}
-
-function buildPromiseRacesQueue (
-  { defaultAPIs, customAPIs }:
-  { defaultAPIs: TExplorerFunctionsArray; customAPIs: TExplorerFunctionsArray }
-): PromiseRaceQueue {
-  const promiseRaceQueue = [defaultAPIs];
-
-  if (customAPIs?.length) {
-    const priority: number = customAPIs[0].priority;
-    promiseRaceQueue.splice(priority, 0, customAPIs);
-  }
-
-  const apisCount: number = defaultAPIs.concat(customAPIs).length;
-  if (CONFIG.MinimumBlockchainExplorers < 0 || CONFIG.MinimumBlockchainExplorers > apisCount) {
-    throw new Error('Invalid application configuration; check the CONFIG.MinimumBlockchainExplorers configuration value');
-  }
-
-  return promiseRaceQueue;
-}
-
-async function runQueueByIndex (queues, index: number, transactionId, chain): Promise<TransactionData> {
-  try {
-    const race = buildQueuePromises(queues[index], transactionId, chain);
-    return await runPromiseRace(race);
-  } catch (err) {
-    if (index < queues.length - 1) {
-      index++;
-      return await runQueueByIndex(queues, index, transactionId, chain);
-    }
-    throw err;
-  }
-}
-
-export default async function lookForTx (
-  { transactionId, chain, explorerAPIs }:
-  { transactionId: string; chain: SupportedChains; explorerAPIs: TExplorerAPIs }
-): Promise<TransactionData> {
-  // Build explorers queue ordered by priority
-  const lookupQueues = buildPromiseRacesQueue({
-    defaultAPIs: getExplorersByChain(chain, explorerAPIs),
-    customAPIs: explorerAPIs.custom
-  });
-
-  // Run queue
-  const currentQueueProcessedIndex = 0;
-  return await runQueueByIndex(lookupQueues, currentQueueProcessedIndex, transactionId, chain);
-}
diff --git a/src/helpers/promiseProperRace.ts b/src/helpers/promiseProperRace.ts
deleted file mode 100644
index c043719..0000000
--- a/src/helpers/promiseProperRace.ts
+++ /dev/null
@@ -1,28 +0,0 @@
-// TODO: not tested
-/* eslint-disable */ // this file is just a pain in the ass to lint. Be brave.
-export default async function PromiseProperRace (promises: Array<Promise<any>>, count: number, results = []): Promise<any> {
-  // Source: https://blog.jcore.com/2016/12/18/promise-me-you-wont-use-promise-race/
-  promises = Array.from(promises);
-
-  if (promises.length < count) {
-    throw new Error('Could not retrieve tx data');
-  }
-
-  const indexPromises = promises.map((p, index) => p.then(() => index).catch((err) => {
-    // console.error(err);
-    throw index;
-  }));
-
-  return Promise.race(indexPromises).then((index: number) => {
-    const p = promises.splice(index, 1)[0];
-    p.then(e => results.push(e));
-
-    if (count === 1) {
-      return results;
-    }
-    return PromiseProperRace(promises, count - 1, results);
-  }).catch(index => {
-    promises.splice(index, 1);
-    return PromiseProperRace(promises, count, results);
-  });
-}
diff --git a/src/inspectors/computeLocalHash.ts b/src/inspectors/computeLocalHash.ts
index 24de940..b1cda85 100644
--- a/src/inspectors/computeLocalHash.ts
+++ b/src/inspectors/computeLocalHash.ts
@@ -7,7 +7,8 @@ const {
   blockcertsV3: BLOCKCERTSV3_CONTEXT,
   verifiableCredential: VERIFIABLE_CREDENTIAL_CONTEXT,
   verifiableCredentialExample: VERIFIABLE_CREDENTIAL_EXAMPLE,
-  merkleProof2019: MERKLE_PROOF_2019
+  merkleProof2019: MERKLE_PROOF_2019,
+  odrl: OPEN_DIGITALS_RIGHTS_LANGUAGE
 } = ContextsMap;
 const CONTEXTS = {};
 
@@ -17,6 +18,7 @@ CONTEXTS['https://www.w3.org/2018/credentials/v1'] = VERIFIABLE_CREDENTIAL_CONTE
 CONTEXTS['https://www.w3.org/2018/credentials/examples/v1'] = VERIFIABLE_CREDENTIAL_EXAMPLE;
 CONTEXTS['https://www.w3id.org/blockcerts/schema/3.0-alpha/merkleProof2019Context.json'] = MERKLE_PROOF_2019;
 CONTEXTS['https://www.blockcerts.org/schema/3.0-alpha/merkleProof2019Context.json'] = MERKLE_PROOF_2019;
+CONTEXTS['https://www.w3.org/ns/odrl.jsonld'] = OPEN_DIGITALS_RIGHTS_LANGUAGE;
 
 function setJsonLdDocumentLoader (): any { // not typed by jsonld
   if (typeof window !== 'undefined' && typeof window.XMLHttpRequest !== 'undefined') {
diff --git a/src/models/Explorers.ts b/src/models/Explorers.ts
index 2545b7d..1240403 100644
--- a/src/models/Explorers.ts
+++ b/src/models/Explorers.ts
@@ -6,11 +6,6 @@ export interface ExplorerURLs {
   main: string;
   test: string;
 }
-
-export type TExplorerFunctionsArray = Array<{
-  getTxData: (transactionId: string, chain?: SupportedChains) => Promise<TransactionData>;
-  priority?: number;
-}>;
 export interface IParsingFunctionAPI {
   jsonResponse?: any; // the response from the service when called as rest
   chain?: SupportedChains; // TODO: look at how to deprecate this. Only used in etherscan
diff --git a/src/services/request.ts b/src/services/request.ts
deleted file mode 100644
index 8f808a7..0000000
--- a/src/services/request.ts
+++ /dev/null
@@ -1,55 +0,0 @@
-import { XMLHttpRequest as xhrPolyfill } from 'xmlhttprequest';
-
-export interface RequestParameters {
-  url: string;
-  method?: 'GET' | 'POST';
-  body?: any;
-}
-
-// TODO: not tested
-export async function request (obj: RequestParameters): Promise<string> {
-  return await new Promise((resolve, reject) => {
-    const url = obj.url;
-
-    if (!url) {
-      reject(new Error('URL is missing'));
-    }
-
-    // server
-    const XHR = typeof XMLHttpRequest === 'undefined' ? xhrPolyfill : XMLHttpRequest;
-    const request: XMLHttpRequest = new XHR();
-
-    request.onload = () => {
-      if (request.status >= 200 && request.status < 300) {
-        resolve(request.responseText);
-      } else {
-        console.log(request.responseText);
-        const failureMessage: string = `Error fetching url:${url}; status code:${request.status}`;
-        reject(new Error(failureMessage));
-      }
-    };
-
-    request.ontimeout = (e) => {
-      console.log('ontimeout', e);
-    };
-
-    request.onreadystatechange = () => {
-      if (request.status === 404) {
-        reject(new Error(`Error fetching url:${url}; status code:${request.status}`));
-      }
-    };
-
-    request.onerror = () => {
-      console.error(`Request failed with error ${request.responseText}`);
-      reject(new Error(request.responseText));
-    };
-
-    request.open(obj.method || 'GET', url);
-
-    if (obj.body) {
-      request.send(JSON.stringify(obj.body));
-    } else {
-      request.send();
-    }
-  });
-}
diff --git a/src/services/transaction-apis.ts b/src/services/transaction-apis.ts
deleted file mode 100644
index a5ba95e..0000000
--- a/src/services/transaction-apis.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-import { ExplorerAPI } from '../models/Explorers';
-import { TRANSACTION_ID_PLACEHOLDER } from '../constants/api';
-import { safelyAppendUrlParameter } from '../utils/url';
-
-function appendApiIdentifier (url: string, explorerAPI: ExplorerAPI): string {
-  if (!explorerAPI.key) {
-    return url;
-  }
-
-  if (explorerAPI.key && !explorerAPI.keyPropertyName) {
-    throw new Error(`No keyPropertyName defined for explorerAPI ${explorerAPI.serviceName}`);
-  }
-
-  return safelyAppendUrlParameter(url, explorerAPI.keyPropertyName, explorerAPI.key);
-}
-
-export function buildTransactionServiceUrl ({
-  explorerAPI,
-  transactionIdPlaceholder = TRANSACTION_ID_PLACEHOLDER,
-  transactionId = '',
-  isTestApi = false
-}: {
-  explorerAPI: ExplorerAPI;
-  transactionIdPlaceholder?: string;
-  transactionId?: string;
-  isTestApi?: boolean;
-}): string {
-  const { serviceURL } = explorerAPI;
-  let apiUrl = typeof serviceURL === 'string' ? serviceURL : (isTestApi ? serviceURL.test : serviceURL.main);
-  apiUrl = apiUrl.replace(transactionIdPlaceholder, transactionId);
-  apiUrl = appendApiIdentifier(apiUrl, explorerAPI);
-  return apiUrl;
-}
diff --git a/src/utils/date.ts b/src/utils/date.ts
index 16312bf..914e75e 100644
--- a/src/utils/date.ts
+++ b/src/utils/date.ts
@@ -19,7 +19,7 @@ function dateFromRegex (s: string): Date {
   let day;
   let tz;
   const rx = /^(\d{4}\-\d\d\-\d\d([tT][\d:\.]*)?)([zZ]|([+\-])(\d\d):?(\d\d))?$/;
-  const p = rx.exec(s) || [];
+  const p = rx.exec(s) ?? [];
   if (p[1]) {
     day = p[1].split(/\D/).map(function (itm) {
       return parseInt(itm, 10) || 0;
diff --git a/tests/MerkleProof2019.test.ts b/tests/MerkleProof2019.test.ts
index ced5f0e..2fc0722 100644
--- a/tests/MerkleProof2019.test.ts
+++ b/tests/MerkleProof2019.test.ts
@@ -1,9 +1,9 @@
 import sinon from 'sinon';
+import * as explorerLookup from '@blockcerts/explorer-lookup';
 import { MerkleProof2019, MerkleProof2019Options, MerkleProof2019VerificationResult } from '../src/MerkleProof2019';
 import decodedProof, { assertionTransactionId } from './assertions/proof';
 import { TransactionData } from '../src/models/TransactionData';
 import { BLOCKCHAINS } from '../src/constants/blockchains';
-import * as lookForTxFunctions from '../src/helpers/lookForTx';
 import blockcertsV3Fixture, { documentHash } from './fixtures/blockcerts-v3';
 import fixtureTransactionData from './fixtures/transactionData';
 
@@ -78,7 +78,7 @@ describe('MerkleProof2019 test suite', function () {
         let result: MerkleProof2019VerificationResult;
 
         beforeEach(async function () {
-          sinon.stub(lookForTxFunctions, 'default').resolves(fixtureTransactionData);
+          sinon.stub(explorerLookup, 'lookForTx').resolves(fixtureTransactionData);
           result = await instance.verifyProof();
         });
 
diff --git a/tests/explorers/bitcoin/bitpay.test.ts b/tests/explorers/bitcoin/bitpay.test.ts
deleted file mode 100644
index c20f65b..0000000
--- a/tests/explorers/bitcoin/bitpay.test.ts
+++ /dev/null
@@ -1,36 +0,0 @@
-import * as mockBitpayResponse from '../mocks/mockBitpayResponse.json';
-import { explorerApi } from '../../../src/explorers/bitcoin/bitpay';
-
-function getMockBitpayResponse (): typeof mockBitpayResponse {
-  return JSON.parse(JSON.stringify(mockBitpayResponse));
-}
-
-describe('Bitpay Explorer test suite', function () {
-  let mockResponse;
-
-  beforeEach(function () {
-    mockResponse = getMockBitpayResponse();
-  });
-
-  describe('given the transaction has enough confirmations', function () {
-    const assertionTransactionData = {
-      issuingAddress: '1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo',
-      remoteHash: 'b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8',
-      revokedAddresses: ['1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo'],
-      time: new Date(1518049414 * 1000)
-    };
-
-    it('should return the transaction data', function () {
-      expect(explorerApi.parsingFunction({ jsonResponse: mockResponse })).toEqual(assertionTransactionData);
-    });
-  });
-
-  describe('given the transaction does not have enough confirmations yet', function () {
-    it('should throw the right error', async function () {
-      mockResponse.confirmations = 0;
-      await expect(async () => {
-        await explorerApi.parsingFunction({ jsonResponse: mockResponse });
-      }).rejects.toThrowError('Number of transaction confirmations were less than the minimum required, according to Bitpay API');
-    });
-  });
-});
diff --git a/tests/explorers/bitcoin/blockcypher.test.ts b/tests/explorers/bitcoin/blockcypher.test.ts
deleted file mode 100644
index a169eb0..0000000
--- a/tests/explorers/bitcoin/blockcypher.test.ts
+++ /dev/null
@@ -1,36 +0,0 @@
-import * as mockBlockcypherResponse from '../mocks/mockBlockcypherResponse.json';
-import { explorerApi } from '../../../src/explorers/bitcoin/blockcypher';
-
-function getMockBlockcypherResponse (): typeof mockBlockcypherResponse {
-  return JSON.parse(JSON.stringify(mockBlockcypherResponse));
-}
-
-describe('Blockcypher Bitcoin Explorer test suite', function () {
-  let mockResponse;
-
-  beforeEach(function () {
-    mockResponse = getMockBlockcypherResponse();
-  });
-
-  describe('given the transaction has enough confirmations', function () {
-    const assertionTransactionData = {
-      issuingAddress: '1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo',
-      remoteHash: 'b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8',
-      revokedAddresses: ['1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo'],
-      time: new Date('2018-02-08T00:23:03.358Z')
-    };
-
-    it('should return the transaction data', function () {
-      expect(explorerApi.parsingFunction({ jsonResponse: mockResponse })).toEqual(assertionTransactionData);
-    });
-  });
-
-  describe('given the transaction does not have enough confirmations yet', function () {
-    it('should throw the right error', async function () {
-      mockResponse.confirmations = 0;
-      await expect(async () => {
-        await explorerApi.parsingFunction({ jsonResponse: mockResponse });
-      }).rejects.toThrowError('Number of transaction confirmations were less than the minimum required, according to Blockcypher API');
-    });
-  });
-});
diff --git a/tests/explorers/bitcoin/blockexplorer.test.ts b/tests/explorers/bitcoin/blockexplorer.test.ts
deleted file mode 100644
index fb3efb8..0000000
--- a/tests/explorers/bitcoin/blockexplorer.test.ts
+++ /dev/null
@@ -1,36 +0,0 @@
-import * as mockBlockexplorerResponse from '../mocks/mockBlockexplorerResponse.json';
-import { explorerApi } from '../../../src/explorers/bitcoin/blockexplorer';
-
-function getMockBlockexplorerResponse (): typeof mockBlockexplorerResponse {
-  return JSON.parse(JSON.stringify(mockBlockexplorerResponse));
-}
-
-describe('Blockexplorer Explorer test suite', function () {
-  let mockResponse;
-
-  beforeEach(function () {
-    mockResponse = getMockBlockexplorerResponse();
-  });
-
-  describe('given the transaction has enough confirmations', function () {
-    const assertionTransactionData = {
-      issuingAddress: '1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo',
-      remoteHash: 'b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8',
-      revokedAddresses: ['1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo'],
-      time: new Date(1518049414 * 1000)
-    };
-
-    it('should return the transaction data', function () {
-      expect(explorerApi.parsingFunction({ jsonResponse: mockResponse })).toEqual(assertionTransactionData);
-    });
-  });
-
-  describe('given the transaction does not have enough confirmations yet', function () {
-    it('should throw the right error', async function () {
-      mockResponse.confirmations = 0;
-      await expect(async () => {
-        await explorerApi.parsingFunction({ jsonResponse: mockResponse });
-      }).rejects.toThrowError('Number of transaction confirmations were less than the minimum required, according to Blockexplorer API');
-    });
-  });
-});
diff --git a/tests/explorers/bitcoin/blockstream.test.ts b/tests/explorers/bitcoin/blockstream.test.ts
deleted file mode 100644
index 56dc8ba..0000000
--- a/tests/explorers/bitcoin/blockstream.test.ts
+++ /dev/null
@@ -1,36 +0,0 @@
-import * as mockBlockstreamResponse from '../mocks/mockBlockstreamResponse.json';
-import { explorerApi } from '../../../src/explorers/bitcoin/blockstream';
-
-function getMockBlockstreamResponse (): typeof mockBlockstreamResponse {
-  return JSON.parse(JSON.stringify(mockBlockstreamResponse));
-}
-
-describe('Blockstream Explorer test suite', function () {
-  let mockResponse;
-
-  beforeEach(function () {
-    mockResponse = getMockBlockstreamResponse();
-  });
-
-  describe('given the transaction has enough confirmations', function () {
-    const assertionTransactionData = {
-      issuingAddress: '1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo',
-      remoteHash: 'b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8',
-      revokedAddresses: ['1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo'],
-      time: new Date(1518049414 * 1000)
-    };
-
-    it('should return the transaction data', function () {
-      expect(explorerApi.parsingFunction({ jsonResponse: mockResponse })).toEqual(assertionTransactionData);
-    });
-  });
-
-  describe('given the transaction does not have enough confirmations yet', function () {
-    it('should throw the right error', async function () {
-      mockResponse.status.confirmed = false;
-      await expect(async () => {
-        await explorerApi.parsingFunction({ jsonResponse: mockResponse });
-      }).rejects.toThrowError('Number of transaction confirmations were less than the minimum required, according to Blockstream API');
-    });
-  });
-});
diff --git a/tests/explorers/ethereum/blockcypher.test.ts b/tests/explorers/ethereum/blockcypher.test.ts
deleted file mode 100644
index fabeec9..0000000
--- a/tests/explorers/ethereum/blockcypher.test.ts
+++ /dev/null
@@ -1,61 +0,0 @@
-import { TransactionData } from '../../../src/models/TransactionData';
-import { explorerApi as BlockcyperETHApi } from '../../../src/explorers/ethereum/blockcypher';
-
-const responseData = {
-  block_hash: '43bc69984a1ef0b160eeb5bc9cbda4d6ea7cdc01645300c50f398f234acfb3ae',
-  block_height: 5715803,
-  block_index: 14,
-  hash: 'a12c498c8fcf59ee2fe785c94c38be4797fb027e6450439a7ef30ad61d7616d3',
-  addresses: [
-    '3d995ef85a8d1bcbed78182ab225b9f88dc8937c',
-    'deaddeaddeaddeaddeaddeaddeaddeaddeaddead'
-  ],
-  total: 0,
-  fees: 463520000000000,
-  size: 134,
-  gas_limit: 25000,
-  gas_used: 23176,
-  gas_price: 20000000000,
-  confirmed: '2018-06-01T20:47:55Z',
-  received: '2018-06-01T20:47:55Z',
-  ver: 0,
-  double_spend: false,
-  vin_sz: 1,
-  vout_sz: 1,
-  confirmations: 4348656,
-  confidence: 1,
-  inputs: [
-    {
-      sequence: 2,
-      addresses: [
-        '3d995ef85a8d1bcbed78182ab225b9f88dc8937c'
-      ]
-    }
-  ],
-  outputs: [
-    {
-      value: 0,
-      script: 'ec049a808a09f3e8e257401e0898aa3d32a733706fd7d16aacf0ba95f7b42c0c',
-      addresses: [
-        'deaddeaddeaddeaddeaddeaddeaddeaddeaddead'
-      ]
-    }
-  ]
-};
-
-describe('Blockcypher Ethereum explorer test suite', function () {
-  describe('given it is called with response data from the API', function () {
-    it('should return the correct TransactionData', async function () {
-      const expectedOutput: TransactionData = {
-        revokedAddresses: [],
-        remoteHash: 'ec049a808a09f3e8e257401e0898aa3d32a733706fd7d16aacf0ba95f7b42c0c',
-        issuingAddress: '0x3d995ef85a8d1bcbed78182ab225b9f88dc8937c',
-        time: new Date('2018-06-01T20:47:55.000Z')
-      };
-
-      const output: TransactionData = await BlockcyperETHApi.parsingFunction({ jsonResponse: responseData });
-
-      expect(output).toEqual(expectedOutput);
-    });
-  });
-});
diff --git a/tests/explorers/ethereum/etherscan.test.ts b/tests/explorers/ethereum/etherscan.test.ts
deleted file mode 100644
index f5eaa0b..0000000
--- a/tests/explorers/ethereum/etherscan.test.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-import sinon from 'sinon';
-import * as mockEtherscanResponse from '../mocks/mockEtherscanResponse.json';
-import { explorerApi } from '../../../src/explorers/ethereum/etherscan';
-import * as RequestServices from '../../../src/services/request';
-import { TransactionData } from '../../../src/models/TransactionData';
-
-function getMockEtherscanResponse (): typeof mockEtherscanResponse {
-  return JSON.parse(JSON.stringify(mockEtherscanResponse));
-}
-
-describe('Etherscan Explorer test suite', function () {
-  let mockResponse;
-
-  beforeEach(function () {
-    mockResponse = getMockEtherscanResponse();
-  });
-
-  describe('parsingFunction method', function () {
-    it('should return the transaction data', async function () {
-      const assertionTransactionData: TransactionData = {
-        issuingAddress: '0x3d995ef85a8d1bcbed78182ab225b9f88dc8937c',
-        remoteHash: 'ec049a808a09f3e8e257401e0898aa3d32a733706fd7d16aacf0ba95f7b42c0c',
-        revokedAddresses: [],
-        time: new Date('2019-06-02T08:38:26.000Z')
-      };
-
-      const res = await explorerApi.parsingFunction({ jsonResponse: mockResponse });
-      expect(res).toEqual(assertionTransactionData);
-    });
-
-    describe('given the ether scan block cannot get retrieved', function () {
-      it('should throw the right error', async function () {
-        const stubRequest = sinon.stub(RequestServices, 'request').rejects();
-        await expect(explorerApi.parsingFunction({ jsonResponse: mockResponse }))
-          .rejects.toThrow('Unable to get remote hash');
-        stubRequest.restore();
-      });
-    });
-  });
-});
diff --git a/tests/explorers/explorer.test.ts b/tests/explorers/explorer.test.ts
deleted file mode 100644
index c8d2001..0000000
--- a/tests/explorers/explorer.test.ts
+++ /dev/null
@@ -1,294 +0,0 @@
-import sinon from 'sinon';
-import * as RequestService from '../../src/services/request';
-import { explorerApi as BitpayAPI } from '../../src/explorers/bitcoin/bitpay';
-import { explorerApi as BlockcypherAPI } from '../../src/explorers/bitcoin/blockcypher';
-import * as mockBitpayResponse from './mocks/mockBitpayResponse.json';
-import { explorerFactory, getTransactionFromApi } from '../../src/explorers/explorer';
-import { TRANSACTION_APIS } from '../../src/constants/api';
-import { BLOCKCHAINS } from '../../src/constants/blockchains';
-import { ExplorerAPI } from '../../src/models/Explorers';
-import {
-  getDefaultExplorers,
-  getRPCExplorers,
-  overwriteDefaultExplorers,
-  prepareExplorerAPIs,
-  TExplorerAPIs
-} from '../../src/explorers';
-import * as ethRPCExplorer from '../../src/explorers/rpc/ethereum';
-import * as btcRPCExplorer from '../../src/explorers/rpc/bitcoin';
-import { TransactionData } from '../../src/models/TransactionData';
-
-describe('Blockchain Explorers test suite', function () {
-  const fixtureTransactionId = '2378076e8e140012814e98a2b2cb1af07ec760b239c1d6d93ba54d658a010ecd';
-  const assertionRequestUrl = `https://insight.bitpay.com/api/tx/${fixtureTransactionId}`;
-  let stubRequest;
-  const assertionResponse = {
-    issuingAddress: '1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo',
-    remoteHash: 'b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8',
-    revokedAddresses: ['1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo'],
-    time: new Date(1518049414 * 1000)
-  };
-
-  beforeEach(function () {
-    stubRequest = sinon.stub(RequestService, 'request').resolves(JSON.stringify(mockBitpayResponse));
-  });
-
-  afterEach(function () {
-    stubRequest.restore();
-  });
-
-  describe('getTransactionFromApi method', function () {
-    it('should call the right request API', async function () {
-      await getTransactionFromApi(BitpayAPI, fixtureTransactionId, BLOCKCHAINS.bitcoin.code);
-      expect(stubRequest.getCall(0).args).toEqual([{ url: assertionRequestUrl }]);
-    });
-
-    describe('given the API request failed', function () {
-      it('should throw the right error', async function () {
-        const fixtureError = new Error('Unable to get remote hash');
-        stubRequest.rejects(fixtureError);
-        await expect(getTransactionFromApi(BitpayAPI, fixtureTransactionId, BLOCKCHAINS.bitcoin.code))
-          .rejects.toThrow('Unable to get remote hash');
-      });
-    });
-
-    describe('given the request is successful', function () {
-      describe('and the transaction data is generated from the response', function () {
-        it('should return a correct transaction data', async function () {
-          const res = await getTransactionFromApi(BitpayAPI, fixtureTransactionId, BLOCKCHAINS.bitcoin.code);
-          expect(res).toEqual(assertionResponse);
-        });
-      });
-    });
-  });
-
-  describe('overwriteDefaultExplorers method', function () {
-    describe('given it was passed a default explorer match', function () {
-      it('should overwrite the data of that default explorer', function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceName: TRANSACTION_APIS.bitpay,
-          key: 'a-custom-key',
-          keyPropertyName: 'apiKey'
-        };
-
-        const mockDefaultExplorer: ExplorerAPI = Object.assign({}, BitpayAPI);
-
-        const output = overwriteDefaultExplorers([fixtureExplorer], [mockDefaultExplorer, BlockcypherAPI]);
-        expect(output.find(explorerAPI => explorerAPI.serviceName === fixtureExplorer.serviceName).key)
-          .toBe(fixtureExplorer.key);
-      });
-
-      it('should return the list of default explorers with the one modified', function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceName: TRANSACTION_APIS.bitpay,
-          key: 'a-custom-key',
-          keyPropertyName: 'apiKey'
-        };
-
-        const mockDefaultExplorer: ExplorerAPI = Object.assign({}, BitpayAPI);
-
-        const output = overwriteDefaultExplorers([fixtureExplorer], [mockDefaultExplorer, BlockcypherAPI]);
-        const expectedOutput = [Object.assign(mockDefaultExplorer, fixtureExplorer), BlockcypherAPI];
-        expect(output).toEqual(expectedOutput);
-      });
-
-      describe('and the explorer overwrite is malformed', function () {
-        describe('when a key is set but no keyPropertyName', function () {
-          it('should throw an error', function () {
-            const fixtureExplorer: ExplorerAPI = {
-              serviceName: TRANSACTION_APIS.bitpay,
-              key: 'a-custom-key'
-            };
-
-            expect(() => {
-              overwriteDefaultExplorers([fixtureExplorer], [BitpayAPI, BlockcypherAPI]);
-            }).toThrow('Property keyPropertyName is not set for bitpay. Cannot pass the key property to the service.');
-          });
-        });
-      });
-    });
-
-    describe('given it was passed no default explorer match', function () {
-      it('should return the list of default explorers as expected', function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceURL: 'https//another-service.com/api',
-          key: 'a-custom-key',
-          keyPropertyName: 'apiKey'
-        };
-
-        const output = overwriteDefaultExplorers([fixtureExplorer], [BitpayAPI, BlockcypherAPI]);
-        const expectedOutput = [BitpayAPI, BlockcypherAPI];
-        expect(output).toEqual(expectedOutput);
-      });
-    });
-  });
-
-  describe('getDefaultExplorers method', function () {
-    // This is hard to test from a data point of view since we are wrapping the explorers
-    it('should wrap the explorers and expose the getTxData method', function () {
-      const output = getDefaultExplorers();
-      expect(output.bitcoin[0].getTxData).toBeDefined();
-    });
-
-    it('should return the default explorers for bitcoin', function () {
-      const output = getDefaultExplorers();
-      expect(output.bitcoin.length).toBe(4);
-    });
-
-    it('should return the default explorers for ethereum', function () {
-      const output = getDefaultExplorers();
-      expect(output.ethereum.length).toBe(2);
-    });
-
-    describe('when it is called with custom explorers', function () {
-      describe('and one of the custom explorers matches one of the default explorers', function () {
-        it('should return the same expected amount of default explorers', function () {
-          const fixtureExplorer: ExplorerAPI = {
-            serviceName: TRANSACTION_APIS.bitpay,
-            key: 'a-custom-key',
-            keyPropertyName: 'apiKey'
-          };
-          const output = getDefaultExplorers([fixtureExplorer]);
-          expect(output.bitcoin.length).toBe(4);
-          expect(output.ethereum.length).toBe(2);
-        });
-      });
-
-      describe('and none of the custom explorers matches the default explorers', function () {
-        it('should return the same expected amount of default explorers', function () {
-          const fixtureExplorer: ExplorerAPI = {
-            serviceURL: 'https//another-service.com/api',
-            key: 'a-custom-key',
-            keyPropertyName: 'apiKey'
-          };
-          const output = getDefaultExplorers([fixtureExplorer]);
-          expect(output.bitcoin.length).toBe(4);
-          expect(output.ethereum.length).toBe(2);
-        });
-      });
-    });
-  });
-
-  describe('getRPCExplorers method', function () {
-    describe('given it is called with an eth custom explorer', function () {
-      it('should assign the ethereumRPCParsing function to retrieve the data', async function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceURL: 'a-rpc-server.com',
-          chainType: 'eth',
-          priority: 0
-        };
-
-        const rpcFunctionName = 'ethereumRPCParsingFunction';
-        sinon.stub(ethRPCExplorer, rpcFunctionName).resolves(`${rpcFunctionName} was called` as any);
-
-        const explorers = getRPCExplorers([fixtureExplorer]);
-        const testOutput = await explorers.custom[0].getTxData('test');
-        expect(testOutput).toBe(`${rpcFunctionName} was called`);
-        sinon.restore();
-      });
-    });
-
-    describe('given it is called with an evm custom explorer', function () {
-      it('should assign the ethereumRPCParsing function to retrieve the data', async function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceURL: 'a-rpc-server.com',
-          chainType: 'evm',
-          priority: 0
-        };
-
-        const rpcFunctionName = 'ethereumRPCParsingFunction';
-        sinon.stub(ethRPCExplorer, rpcFunctionName).resolves(`${rpcFunctionName} was called` as any);
-
-        const explorers = getRPCExplorers([fixtureExplorer]);
-        const testOutput = await explorers.custom[0].getTxData('test');
-        expect(testOutput).toBe(`${rpcFunctionName} was called`);
-        sinon.restore();
-      });
-    });
-
-    describe('given it is called with a btc custom explorer', function () {
-      it('should assign the bitcoinRPCParsingFunction to retrieve the data', async function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceURL: 'a-rpc-server.com',
-          chainType: 'btc',
-          priority: 0
-        };
-
-        const rpcFunctionName = 'bitcoinRPCParsingFunction';
-        sinon.stub(btcRPCExplorer, rpcFunctionName).resolves(`${rpcFunctionName} was called` as any);
-
-        const explorers = getRPCExplorers([fixtureExplorer]);
-        const testOutput = await explorers.custom[0].getTxData('test', '' as any);
-        expect(testOutput).toBe(`${rpcFunctionName} was called`);
-        sinon.restore();
-      });
-    });
-
-    describe('given the chain type is not provided', function () {
-      it('should assign the ethereumRPCParsingFunction to retrieve the data', async function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceURL: 'a-rpc-server.com',
-          priority: 0
-        };
-
-        const rpcFunctionName = 'ethereumRPCParsingFunction';
-        sinon.stub(ethRPCExplorer, rpcFunctionName).resolves(`${rpcFunctionName} was called` as any);
-
-        const explorers = getRPCExplorers([fixtureExplorer]);
-        const testOutput = await explorers.custom[0].getTxData('test');
-        expect(testOutput).toBe(`${rpcFunctionName} was called`);
-        sinon.restore();
-      });
-    });
-
-    describe('given the parsing function is provided', function () {
-      it('should use the provided function to retrieve the data', async function () {
-        const fixtureExplorer: ExplorerAPI = {
-          serviceURL: 'a-rpc-server.com',
-          priority: 0,
-          parsingFunction: () => 'custom function was called' as any
-        };
-
-        const rpcFunctionName = 'ethereumRPCParsingFunction';
-        sinon.stub(ethRPCExplorer, rpcFunctionName).resolves(`${rpcFunctionName} was called` as any);
-
-        const explorers = getRPCExplorers([fixtureExplorer]);
-        const testOutput = await explorers.custom[0].getTxData('test');
-        expect(testOutput).toBe('custom function was called');
-        sinon.restore();
-      });
-    });
-  });
-
-  describe('prepareExplorerAPIs function', function () {
-    describe('given custom explorers are provided', function () {
-      it('should return the explorers object with the custom explorers', function () {
-        const fixtureCustomExplorerAPI: ExplorerAPI[] = [{
-          serviceURL: 'https://explorer-example.com',
-          priority: 0,
-          parsingFunction: (): TransactionData => {
-            return {
-              remoteHash: 'a',
-              issuingAddress: 'b',
-              time: 'c',
-              revokedAddresses: ['d']
-            };
-          }
-        }];
-        const expectedExplorers: TExplorerAPIs = getDefaultExplorers();
-        expectedExplorers.custom = explorerFactory(fixtureCustomExplorerAPI);
-        const output = prepareExplorerAPIs(fixtureCustomExplorerAPI);
-        expect(JSON.stringify(output)).toEqual(JSON.stringify(expectedExplorers));
-      });
-    });
-
-    describe('given no explorers are provided', function () {
-      it('should return only the default explorers', function () {
-        const expectedExplorers: TExplorerAPIs = getDefaultExplorers();
-        expectedExplorers.custom = [];
-        const output = prepareExplorerAPIs([]);
-        expect(JSON.stringify(output)).toEqual(JSON.stringify(expectedExplorers));
-      });
-    });
-  });
-});
diff --git a/tests/explorers/mocks/mockBitcoinchainResponse.json b/tests/explorers/mocks/mockBitcoinchainResponse.json
deleted file mode 100644
index 464b876..0000000
--- a/tests/explorers/mocks/mockBitcoinchainResponse.json
+++ /dev/null
@@ -1,71 +0,0 @@
-[
-	{
-		"block_time": 1518049414,
-		"blocks": [
-			"000000000000000000360a1b3ac336db50f632f3d5f448f62a62f31da82fb59b"
-		],
-		"fee": 0.0017017,
-		"inputs": [
-			{
-				"in_script": {
-					"asm": "304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c0[ALL] 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-					"hex": "47304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c001210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-				},
-				"output_ref": {
-					"number": 0,
-					"tx": "4b4b5aa4b0a1df5a00cd119e8e147e6422eb4bea980670c23dcd150e2d36d400"
-				},
-				"sender": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-				"value": 0.00231716
-			},
-			{
-				"in_script": {
-					"asm": "304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a[ALL] 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-					"hex": "48304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a01210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-				},
-				"output_ref": {
-					"number": 0,
-					"tx": "54e58fd339f79e46886ac80b83fe321538d38b84c82d7f9c7aa9de1280a5d3c7"
-				},
-				"sender": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-				"value": 0.00231716
-			}
-		],
-		"ip": "255.255.255.255",
-		"lock_time": 0,
-		"outputs": [
-			{
-				"out_script": {
-					"asm": "OP_DUP OP_HASH160 6d0e0a8a22d533927fb44e578ff60e5b7681888d OP_EQUALVERIFY OP_CHECKSIG",
-					"hex": "76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac",
-					"reqSigs": 1,
-					"type": "pubkeyhash"
-				},
-				"receiver": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-				"spending_input": {
-					"number": 1,
-					"tx": "6d7d5ce08ecaddfa8949dccbf6f0bf0e3d24dd81acd6f7e822e1aa01628723e5"
-				},
-				"spent": true,
-				"value": 0.00293262
-			},
-			{
-				"out_script": {
-					"asm": "OP_RETURN b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8",
-					"hex": "6a20b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8",
-					"reqSigs": 0,
-					"type": "nulldata"
-				},
-				"receiver": "Unknown",
-				"spent": false,
-				"value": 0
-			}
-		],
-		"rec_time": 1521716266,
-		"self_hash": "2378076e8e140012814e98a2b2cb1af07ec760b239c1d6d93ba54d658a010ecd",
-		"total_input": 0.00463432,
-		"total_output": 0.00293262,
-		"total_spend_output": 0.00293262,
-		"version": 1
-	}
-]
diff --git a/tests/explorers/mocks/mockBitpayResponse.json b/tests/explorers/mocks/mockBitpayResponse.json
deleted file mode 100644
index a44d380..0000000
--- a/tests/explorers/mocks/mockBitpayResponse.json
+++ /dev/null
@@ -1,72 +0,0 @@
-{
-	"txid": "2378076e8e140012814e98a2b2cb1af07ec760b239c1d6d93ba54d658a010ecd",
-	"version": 1,
-	"locktime": 0,
-	"vin": [
-		{
-			"txid": "4b4b5aa4b0a1df5a00cd119e8e147e6422eb4bea980670c23dcd150e2d36d400",
-			"vout": 0,
-			"sequence": 4294967295,
-			"n": 0,
-			"scriptSig": {
-				"hex": "47304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c001210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-				"asm": "304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c0[ALL] 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-			},
-			"addr": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-			"valueSat": 231716,
-			"value": 0.00231716,
-			"doubleSpentTxID": null
-		},
-		{
-			"txid": "54e58fd339f79e46886ac80b83fe321538d38b84c82d7f9c7aa9de1280a5d3c7",
-			"vout": 0,
-			"sequence": 4294967295,
-			"n": 1,
-			"scriptSig": {
-				"hex": "48304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a01210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-				"asm": "304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a[ALL] 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-			},
-			"addr": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-			"valueSat": 231716,
-			"value": 0.00231716,
-			"doubleSpentTxID": null
-		}
-	],
-	"vout": [
-		{
-			"value": "0.00293262",
-			"n": 0,
-			"scriptPubKey": {
-				"hex": "76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac",
-				"asm": "OP_DUP OP_HASH160 6d0e0a8a22d533927fb44e578ff60e5b7681888d OP_EQUALVERIFY OP_CHECKSIG",
-				"addresses": [
-					"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo"
-				],
-				"type": "pubkeyhash"
-			},
-			"spentTxId": "6d7d5ce08ecaddfa8949dccbf6f0bf0e3d24dd81acd6f7e822e1aa01628723e5",
-			"spentIndex": 1,
-			"spentHeight": 509032
-		},
-		{
-			"value": "0.00000000",
-			"n": 1,
-			"scriptPubKey": {
-				"hex": "6a20b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8",
-				"asm": "OP_RETURN b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8"
-			},
-			"spentTxId": null,
-			"spentIndex": null,
-			"spentHeight": null
-		}
-	],
-	"blockhash": "000000000000000000360a1b3ac336db50f632f3d5f448f62a62f31da82fb59b",
-	"blockheight": 508180,
-	"confirmations": 95442,
-	"time": 1518049414,
-	"blocktime": 1518049414,
-	"valueOut": 0.00293262,
-	"size": 382,
-	"valueIn": 0.00463432,
-	"fees": 0.0017017
-}
diff --git a/tests/explorers/mocks/mockBlockchainInfoResponse.json b/tests/explorers/mocks/mockBlockchainInfoResponse.json
deleted file mode 100644
index 117943f..0000000
--- a/tests/explorers/mocks/mockBlockchainInfoResponse.json
+++ /dev/null
@@ -1,82 +0,0 @@
-{
-	"ver":1,
-	"inputs":[
-		{
-			"sequence":4294967295,
-			"witness":"",
-			"prev_out":{
-				"spent":true,
-				"spending_outpoints":[
-					{
-						"tx_index":329840412,
-						"n":0
-					}
-				],
-				"tx_index":329837514,
-				"type":0,
-				"addr":"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-				"value":231716,
-				"n":0,
-				"script":"76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac"
-			},
-			"script":"47304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c001210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-		},
-		{
-			"sequence":4294967295,
-			"witness":"",
-			"prev_out":{
-				"spent":true,
-				"spending_outpoints":[
-					{
-						"tx_index":329840412,
-						"n":1
-					}
-				],
-				"tx_index":329837090,
-				"type":0,
-				"addr":"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-				"value":231716,
-				"n":0,
-				"script":"76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac"
-			},
-			"script":"48304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a01210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-		}
-	],
-	"weight":1528,
-	"block_height":508180,
-	"relayed_by":"0.0.0.0",
-	"out":[
-		{
-			"spent":true,
-			"spending_outpoints":[
-				{
-					"tx_index":330875143,
-					"n":1
-				}
-			],
-			"tx_index":329840412,
-			"type":0,
-			"addr":"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-			"value":293262,
-			"n":0,
-			"script":"76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac"
-		},
-		{
-			"spent":false,
-			"tx_index":329840412,
-			"type":0,
-			"value":0,
-			"n":1,
-			"script":"6a20b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8"
-		}
-	],
-	"lock_time":0,
-	"size":382,
-	"double_spend":false,
-	"block_index":1672269,
-	"time":1518049383,
-	"tx_index":329840412,
-	"vin_sz":2,
-	"hash":"2378076e8e140012814e98a2b2cb1af07ec760b239c1d6d93ba54d658a010ecd",
-	"vout_sz":2
-}
diff --git a/tests/explorers/mocks/mockBlockcypherResponse.json b/tests/explorers/mocks/mockBlockcypherResponse.json
deleted file mode 100644
index daabd1a..0000000
--- a/tests/explorers/mocks/mockBlockcypherResponse.json
+++ /dev/null
@@ -1,67 +0,0 @@
-{
-	"block_hash": "000000000000000000360a1b3ac336db50f632f3d5f448f62a62f31da82fb59b",
-	"block_height": 508180,
-	"block_index": 4,
-	"hash": "2378076e8e140012814e98a2b2cb1af07ec760b239c1d6d93ba54d658a010ecd",
-	"addresses": [
-		"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo"
-	],
-	"total": 293262,
-	"fees": 170170,
-	"size": 382,
-	"preference": "high",
-	"relayed_by": "34.200.84.245:8333",
-	"confirmed": "2018-02-08T00:23:34Z",
-	"received": "2018-02-08T00:23:03.358Z",
-	"ver": 1,
-	"double_spend": false,
-	"vin_sz": 2,
-	"vout_sz": 2,
-	"data_protocol": "unknown",
-	"confirmations": 95579,
-	"confidence": 1,
-	"inputs": [
-		{
-			"prev_hash": "4b4b5aa4b0a1df5a00cd119e8e147e6422eb4bea980670c23dcd150e2d36d400",
-			"output_index": 0,
-			"script": "47304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c001210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-			"output_value": 231716,
-			"sequence": 4294967295,
-			"addresses": [
-				"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo"
-			],
-			"script_type": "pay-to-pubkey-hash",
-			"age": 508176
-		},
-		{
-			"prev_hash": "54e58fd339f79e46886ac80b83fe321538d38b84c82d7f9c7aa9de1280a5d3c7",
-			"output_index": 0,
-			"script": "48304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a01210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-			"output_value": 231716,
-			"sequence": 4294967295,
-			"addresses": [
-				"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo"
-			],
-			"script_type": "pay-to-pubkey-hash",
-			"age": 508177
-		}
-	],
-	"outputs": [
-		{
-			"value": 293262,
-			"script": "76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac",
-			"spent_by": "6d7d5ce08ecaddfa8949dccbf6f0bf0e3d24dd81acd6f7e822e1aa01628723e5",
-			"addresses": [
-				"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo"
-			],
-			"script_type": "pay-to-pubkey-hash"
-		},
-		{
-			"value": 0,
-			"script": "6a20b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8",
-			"addresses": null,
-			"script_type": "null-data",
-			"data_hex": "b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8"
-		}
-	]
-}
diff --git a/tests/explorers/mocks/mockBlockexplorerResponse.json b/tests/explorers/mocks/mockBlockexplorerResponse.json
deleted file mode 100644
index 710ac2b..0000000
--- a/tests/explorers/mocks/mockBlockexplorerResponse.json
+++ /dev/null
@@ -1,72 +0,0 @@
-{
-	"txid": "2378076e8e140012814e98a2b2cb1af07ec760b239c1d6d93ba54d658a010ecd",
-	"version": 1,
-	"locktime": 0,
-	"vin": [
-		{
-			"txid": "4b4b5aa4b0a1df5a00cd119e8e147e6422eb4bea980670c23dcd150e2d36d400",
-			"vout": 0,
-			"sequence": 4294967295,
-			"n": 0,
-			"scriptSig": {
-				"hex": "47304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c001210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-				"asm": "304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c0[ALL] 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-			},
-			"addr": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-			"valueSat": 231716,
-			"value": 0.00231716,
-			"doubleSpentTxID": null
-		},
-		{
-			"txid": "54e58fd339f79e46886ac80b83fe321538d38b84c82d7f9c7aa9de1280a5d3c7",
-			"vout": 0,
-			"sequence": 4294967295,
-			"n": 1,
-			"scriptSig": {
-				"hex": "48304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a01210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-				"asm": "304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a[ALL] 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa"
-			},
-			"addr": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-			"valueSat": 231716,
-			"value": 0.00231716,
-			"doubleSpentTxID": null
-		}
-	],
-	"vout": [
-		{
-			"value": "0.00293262",
-			"n": 0,
-			"scriptPubKey": {
-				"hex": "76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac",
-				"asm": "OP_DUP OP_HASH160 6d0e0a8a22d533927fb44e578ff60e5b7681888d OP_EQUALVERIFY OP_CHECKSIG",
-				"addresses": [
-					"1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo"
-				],
-				"type": "pubkeyhash"
-			},
-			"spentTxId": "6d7d5ce08ecaddfa8949dccbf6f0bf0e3d24dd81acd6f7e822e1aa01628723e5",
-			"spentIndex": 1,
-			"spentHeight": 509032
-		},
-		{
-			"value": "0.00000000",
-			"n": 1,
-			"scriptPubKey": {
-				"hex": "6a20b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8",
-				"asm": "OP_RETURN b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8"
-			},
-			"spentTxId": null,
-			"spentIndex": null,
-			"spentHeight": null
-		}
-	],
-	"blockhash": "000000000000000000360a1b3ac336db50f632f3d5f448f62a62f31da82fb59b",
-	"blockheight": 508180,
-	"confirmations": 95557,
-	"time": 1518049414,
-	"blocktime": 1518049414,
-	"valueOut": 0.00293262,
-	"size": 382,
-	"valueIn": 0.00463432,
-	"fees": 0.0017017
-}
diff --git a/tests/explorers/mocks/mockBlockstreamResponse.json b/tests/explorers/mocks/mockBlockstreamResponse.json
deleted file mode 100644
index 925158c..0000000
--- a/tests/explorers/mocks/mockBlockstreamResponse.json
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-	"txid": "2378076e8e140012814e98a2b2cb1af07ec760b239c1d6d93ba54d658a010ecd",
-	"version": 1,
-	"locktime": 0,
-	"vin": [
-		{
-			"txid": "4b4b5aa4b0a1df5a00cd119e8e147e6422eb4bea980670c23dcd150e2d36d400",
-			"vout": 0,
-			"prevout": {
-				"scriptpubkey": "76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac",
-				"scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 6d0e0a8a22d533927fb44e578ff60e5b7681888d OP_EQUALVERIFY OP_CHECKSIG",
-				"scriptpubkey_type": "p2pkh",
-				"scriptpubkey_address": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-				"value": 231716
-			},
-			"scriptsig": "47304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c001210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-			"scriptsig_asm": "OP_PUSHBYTES_71 304402205a98a4b501a133ee140bc7b2683f249b6ca73d5ae22e215550cdc8c4d33c19c50220631d5e7400d9898b2c4d659791c6d619d3fc7211cf0c6c6d55d6c6e111f1e2c001 OP_PUSHBYTES_33 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-			"is_coinbase": false,
-			"sequence": 4294967295
-		},
-		{
-			"txid": "54e58fd339f79e46886ac80b83fe321538d38b84c82d7f9c7aa9de1280a5d3c7",
-			"vout": 0,
-			"prevout": {
-				"scriptpubkey": "76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac",
-				"scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 6d0e0a8a22d533927fb44e578ff60e5b7681888d OP_EQUALVERIFY OP_CHECKSIG",
-				"scriptpubkey_type": "p2pkh",
-				"scriptpubkey_address": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-				"value": 231716
-			},
-			"scriptsig": "48304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a01210262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-			"scriptsig_asm": "OP_PUSHBYTES_72 304502210080048844663e9927eff586c843099f4e1197fcf317f9bcba723de9c293e06e2602204b512d9199b0a549f8908eb1c63fa125f96083be36df1e0a071b992061a6362a01 OP_PUSHBYTES_33 0262abbba41b0e53be21f52e844969946d5bbf93b2fc83a63f35b2bdcdae365bfa",
-			"is_coinbase": false,
-			"sequence": 4294967295
-		}
-	],
-	"vout": [
-		{
-			"scriptpubkey": "76a9146d0e0a8a22d533927fb44e578ff60e5b7681888d88ac",
-			"scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 6d0e0a8a22d533927fb44e578ff60e5b7681888d OP_EQUALVERIFY OP_CHECKSIG",
-			"scriptpubkey_type": "p2pkh",
-			"scriptpubkey_address": "1AwdUWQzJgfDDjeKtpPzMfYMHejFBrxZfo",
-			"value": 293262
-		},
-		{
-			"scriptpubkey": "6a20b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8",
-			"scriptpubkey_asm": "OP_RETURN OP_PUSHBYTES_32 b2ceea1d52627b6ed8d919ad1039eca32f6e099ef4a357cbb7f7361c471ea6c8",
-			"scriptpubkey_type": "op_return",
-			"value": 0
-		}
-	],
-	"size": 382,
-	"weight": 1528,
-	"fee": 170170,
-	"status": {
-		"confirmed": true,
-		"block_height": 508180,
-		"block_hash": "000000000000000000360a1b3ac336db50f632f3d5f448f62a62f31da82fb59b",
-		"block_time": 1518049414
-	}
-}
diff --git a/tests/explorers/mocks/mockEtherscanResponse.json b/tests/explorers/mocks/mockEtherscanResponse.json
deleted file mode 100644
index fbbb895..0000000
--- a/tests/explorers/mocks/mockEtherscanResponse.json
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-	"jsonrpc": "2.0",
-	"id": 1,
-	"result": {
-		"blockHash": "0x43bc69984a1ef0b160eeb5bc9cbda4d6ea7cdc01645300c50f398f234acfb3ae",
-		"blockNumber": "0x57375b",
-		"from": "0x3d995ef85a8d1bcbed78182ab225b9f88dc8937c",
-		"gas": "0x61a8",
-		"gasPrice": "0x4a817c800",
-		"hash": "0xa12c498c8fcf59ee2fe785c94c38be4797fb027e6450439a7ef30ad61d7616d3",
-		"input": "0xec049a808a09f3e8e257401e0898aa3d32a733706fd7d16aacf0ba95f7b42c0c",
-		"nonce": "0x2",
-		"to": "0xdeaddeaddeaddeaddeaddeaddeaddeaddeaddead",
-		"transactionIndex": "0xb",
-		"value": "0x0",
-		"v": "0x26",
-		"r": "0xe970a5df815a001360596410b304cfef763cba594b9a14e9804e8fb64ee8295",
-		"s": "0x6e4f235ca308dee52160f0b90802dcde159e3b1ccca7d57330eff42d9783775b"
-	}
-}
diff --git a/tests/explorers/rpc/bitcoin.test.ts b/tests/explorers/rpc/bitcoin.test.ts
deleted file mode 100644
index e680e52..0000000
--- a/tests/explorers/rpc/bitcoin.test.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-import sinon from 'sinon';
-import * as request from '../../../src/services/request';
-import { bitcoinRPCParsingFunction } from '../../../src/explorers/rpc/bitcoin';
-
-const getRawTransactionResponse = '{"result":{"txid":"d75b7a5bdb3d5244b753e6b84e987267cfa4ffa7a532a2ed49ad3848be1d82f8","hash":"d75b7a5bdb3d5244b753e6b84e987267cfa4ffa7a532a2ed49ad3848be1d82f8","version":1,"size":266,"vsize":266,"weight":1064,"locktime":0,"vin":[{"txid":"cbe1a820fd0512607d9cd41f3020770abc4ce015efb332a38b17598d981d26b9","vout":0,"scriptSig":{"asm":"304402207296a8a444e26cac6e0ab51e37fe96b59d406cab8ae61ca27332914052d9541202204b53a96e8d0bfca15dd5729d4ebee242cfd712138f7ccc1ae22451ff99750144[ALL] 04fddb3f9b745cb9dd54007164462597e607735cfe56baeef5a0b876c8bd16ee6115e3c77e2f74dc8129362e8c72e8dc4c27f4991f714754a57fd969f50e774e3d","hex":"47304402207296a8a444e26cac6e0ab51e37fe96b59d406cab8ae61ca27332914052d9541202204b53a96e8d0bfca15dd5729d4ebee242cfd712138f7ccc1ae22451ff99750144014104fddb3f9b745cb9dd54007164462597e607735cfe56baeef5a0b876c8bd16ee6115e3c77e2f74dc8129362e8c72e8dc4c27f4991f714754a57fd969f50e774e3d"},"sequence":4294967295}],"vout":[{"value":1.74630942,"n":0,"scriptPubKey":{"asm":"OP_DUP OP_HASH160 7fe4deec11117531349fc17d1217845fedf6e989 OP_EQUALVERIFY OP_CHECKSIG","hex":"76a9147fe4deec11117531349fc17d1217845fedf6e98988ac","reqSigs":1,"type":"pubkeyhash","addresses":["msBCHdwaQ7N2ypBYupkp6uNxtr9Pg76imj"]}},{"value":0.00000000,"n":1,"scriptPubKey":{"asm":"OP_RETURN f029b45bb1a7b1f0b970f6de35344b73cccd16177b4c037acbc2541c7fc27078","hex":"6a20f029b45bb1a7b1f0b970f6de35344b73cccd16177b4c037acbc2541c7fc27078","type":"nulldata"}}],"hex":"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","blockhash":"0000000000000ce580a03ccdbd79b9a8c252eb6ab0741b196fcea81f1b47ca90","confirmations":746253,"time":1498774229,"blocktime":1498774229},"error":null,"id":"rpctest"}';
-
-describe('Bitcoin RPC response parsing test suite', function () {
-  describe('given it is called with a transactionId and a server URL', function () {
-    it('should retrieve the transaction data', async function () {
-      const requestStub: sinon.SinonStub = sinon.stub(request, 'request');
-      const transactionId = 'd75b7a5bdb3d5244b753e6b84e987267cfa4ffa7a532a2ed49ad3848be1d82f8';
-      const serviceUrl = 'a-btc-rpc-url.com';
-
-      requestStub.onCall(0).resolves(getRawTransactionResponse);
-
-      const output = await bitcoinRPCParsingFunction({ serviceUrl, transactionId });
-      expect(output).toEqual({
-        remoteHash: 'f029b45bb1a7b1f0b970f6de35344b73cccd16177b4c037acbc2541c7fc27078',
-        issuingAddress: 'msBCHdwaQ7N2ypBYupkp6uNxtr9Pg76imj',
-        time: new Date('2017-06-29T22:10:29.000Z'),
-        revokedAddresses: ['msBCHdwaQ7N2ypBYupkp6uNxtr9Pg76imj']
-      });
-      requestStub.restore();
-    });
-  });
-});
diff --git a/tests/explorers/rpc/ethereum.test.ts b/tests/explorers/rpc/ethereum.test.ts
deleted file mode 100644
index af2ddf5..0000000
--- a/tests/explorers/rpc/ethereum.test.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import sinon from 'sinon';
-import { ethereumRPCParsingFunction } from '../../../src/explorers/rpc/ethereum';
-import * as request from '../../../src/services/request';
-
-const getByHashResponse = '{"jsonrpc":"2.0","id":"getbyhash","result":{"blockHash":"0xfb6e2f57468cdec12becc9b4dec4844e2efa7cc1ac87965a871c7d71133133dd","blockNumber":"0x46022a","from":"0x11f1089baceaa98dbe22c079c9df1e2338af22e1","gas":"0x5408","gasPrice":"0x3b9aca00","hash":"0xef59c07bed26d473925e688ec4da2211981820dc1167427ef34d2a2e6f45b8fa","input":"0x7122cbe07bafd8c243e8c2b684b38e32cc2493365d7ced1e7f1160cf99be835a","nonce":"0x7","to":"0x11f1089baceaa98dbe22c079c9df1e2338af22e1","transactionIndex":"0x0","value":"0x0","v":"0x27125","r":"0x92d2c281250f0241c26905b73a95c47b7757e05bd78bdc70b5265633929e9d3b","s":"0x2a22306868dca1c9c13b91d4dcedc9629071247085202e47de0fe525d963cd9"}}';
-
-const blockByNumberResponse = '{"jsonrpc":"2.0","id":"blockbynumber","result":{"difficulty":"0x6","extraData":"0xd58301091083626f7286676f312e3133856c696e75780000000000000000000093a9198764b0db11a926e4edc7551ed22ce003321c138b50c9b91b4279f4afad38760444e5c0dc1fad9ed35d91486a45d05ba412c70ebbb3abfefc5a5151557b01","gasLimit":"0x1312d00","gasUsed":"0x5408","hash":"0xfb6e2f57468cdec12becc9b4dec4844e2efa7cc1ac87965a871c7d71133133dd","logsBloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000010000000000000000000000000000000000000000000000000800000000000800000000100000000004000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000080000000000000000000200000000000000000000000000000000000000000000000000000000000004000000000000000000001000000000000000000000000000000100040000000000000000000000000000000000000000000000000000010000000000000100000","miner":"0x0000000000000000000000000000000000000000","mixHash":"0x0000000000000000000000000000000000000000000000000000000000000000","nonce":"0x0000000000000000","number":"0x46022a","parentHash":"0x621e7cbb6e890c895af6250bd625d1ad2236d6c70aa6a1d3fd5a776b3db8109f","receiptsRoot":"0xc0eadd0b3b85cac44db93f86dd8d542020804132b95dbfb66570aae70c07f27f","sha3Uncles":"0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347","size":"0x2ed","stateRoot":"0xfaff3d6e18f470fcee6d6fbf1322bfdec6d2604dba33305bbdc098582d491edd","timestamp":"0x5f6a082f","totalDifficulty":"0x173cc81","transactions":[{"blockHash":"0xfb6e2f57468cdec12becc9b4dec4844e2efa7cc1ac87965a871c7d71133133dd","blockNumber":"0x46022a","from":"0x11f1089baceaa98dbe22c079c9df1e2338af22e1","gas":"0x5408","gasPrice":"0x3b9aca00","hash":"0xef59c07bed26d473925e688ec4da2211981820dc1167427ef34d2a2e6f45b8fa","input":"0x7122cbe07bafd8c243e8c2b684b38e32cc2493365d7ced1e7f1160cf99be835a","nonce":"0x7","to":"0x11f1089baceaa98dbe22c079c9df1e2338af22e1","transactionIndex":"0x0","value":"0x0","v":"0x27125","r":"0x92d2c281250f0241c26905b73a95c47b7757e05bd78bdc70b5265633929e9d3b","s":"0x2a22306868dca1c9c13b91d4dcedc9629071247085202e47de0fe525d963cd9"}],"transactionsRoot":"0x91ed5bfce4b07bfae7174a05fed72e523ebe585bb970d2154d9c06af0a1ea22d","uncles":[]}}';
-
-describe('Ethereum RPC response parsing test suite', function () {
-  describe('given it is called with a transactionId and a server URL', function () {
-    it('should retrieve the transaction data', async function () {
-      const requestStub: sinon.SinonStub = sinon.stub(request, 'request');
-      const transactionId = 'ef59c07bed26d473925e688ec4da2211981820dc1167427ef34d2a2e6f45b8fa';
-      const serviceUrl = 'https://an-evm-rpc-explorer.com/';
-
-      requestStub.onCall(0).resolves(getByHashResponse);
-      requestStub.onCall(1).resolves(blockByNumberResponse);
-
-      const output = await ethereumRPCParsingFunction({ serviceUrl, transactionId });
-      expect(output).toEqual({
-        remoteHash: '7122cbe07bafd8c243e8c2b684b38e32cc2493365d7ced1e7f1160cf99be835a',
-        issuingAddress: '0x11f1089baceaa98dbe22c079c9df1e2338af22e1',
-        time: new Date('2020-09-22T14:20:31.000Z'),
-        revokedAddresses: []
-      });
-
-      requestStub.restore();
-    });
-  });
-});
diff --git a/tests/helpers/lookForTx-with-custom-explorers-first.test.ts b/tests/helpers/lookForTx-with-custom-explorers-first.test.ts
deleted file mode 100644
index 3dba136..0000000
--- a/tests/helpers/lookForTx-with-custom-explorers-first.test.ts
+++ /dev/null
@@ -1,98 +0,0 @@
-import sinon from 'sinon';
-import { TransactionData } from '../../src/models/TransactionData';
-import { TExplorerAPIs } from '../../src/explorers';
-import { SupportedChains } from '../../src/constants/blockchains';
-import lookForTx from '../../src/helpers/lookForTx';
-
-describe('lookForTx test suite', function () {
-  const MOCK_TRANSACTION_ID = 'mock-transaction-id';
-  const fixtureCustomTxData: TransactionData = {
-    revokedAddresses: [],
-    time: '2020-04-20T00:00:00Z',
-    remoteHash: 'a-remote-hash',
-    issuingAddress: 'from-custom-explorer'
-  };
-
-  const fixtureDefaultTxData: TransactionData = {
-    revokedAddresses: [],
-    time: '2020-04-20T00:00:00Z',
-    remoteHash: 'a-remote-hash',
-    issuingAddress: 'from-default-explorer'
-  };
-
-  describe('given it is invoked with custom explorers with priority 0', function () {
-    let stubbedCustomExplorer: sinon.SinonStub;
-    let stubbedDefaultExplorer: sinon.SinonStub;
-    let mockExplorers: TExplorerAPIs;
-
-    beforeEach(function () {
-      stubbedCustomExplorer = sinon.stub().resolves(fixtureCustomTxData);
-      stubbedDefaultExplorer = sinon.stub().resolves(fixtureDefaultTxData);
-      mockExplorers = {
-        bitcoin: [{
-          getTxData: stubbedDefaultExplorer,
-          priority: -1
-        }],
-        ethereum: [],
-        custom: [{
-          getTxData: stubbedCustomExplorer,
-          priority: 0
-        }]
-      };
-    });
-
-    afterEach(function () {
-      stubbedCustomExplorer.resetHistory();
-      stubbedDefaultExplorer.resetHistory();
-    });
-
-    describe('given the custom explorers return the transaction', function () {
-      let response: TransactionData;
-
-      beforeEach(async function () {
-        response = await lookForTx({
-          transactionId: MOCK_TRANSACTION_ID,
-          chain: SupportedChains.Bitcoin,
-          explorerAPIs: mockExplorers
-        });
-      });
-
-      it('should retrieve the response from the custom explorers', function () {
-        expect(response).toBe(fixtureCustomTxData);
-      });
-
-      it('should have called the custom explorers', function () {
-        expect(stubbedCustomExplorer.calledOnce).toBe(true);
-      });
-
-      it('should not have called the default explorers', function () {
-        expect(stubbedDefaultExplorer.calledOnce).toBe(false);
-      });
-    });
-
-    describe('given the custom explorers fail to return the transaction', function () {
-      let response: TransactionData;
-
-      beforeEach(async function () {
-        stubbedCustomExplorer.rejects();
-        response = await lookForTx({
-          transactionId: MOCK_TRANSACTION_ID,
-          chain: SupportedChains.Bitcoin,
-          explorerAPIs: mockExplorers
-        });
-      });
-
-      it('should retrieve the response from the default explorers', function () {
-        expect(response).toBe(fixtureDefaultTxData);
-      });
-
-      it('should have called the custom explorers', function () {
-        expect(stubbedCustomExplorer.calledOnce).toBe(true);
-      });
-
-      it('should have called the default explorers', function () {
-        expect(stubbedDefaultExplorer.calledOnce).toBe(true);
-      });
-    });
-  });
-});
diff --git a/tests/helpers/lookForTx-with-custom-explorers-last.test.ts b/tests/helpers/lookForTx-with-custom-explorers-last.test.ts
deleted file mode 100644
index f9e60f8..0000000
--- a/tests/helpers/lookForTx-with-custom-explorers-last.test.ts
+++ /dev/null
@@ -1,98 +0,0 @@
-import sinon from 'sinon';
-import { TransactionData } from '../../src/models/TransactionData';
-import { TExplorerAPIs } from '../../src/explorers';
-import lookForTx from '../../src/helpers/lookForTx';
-import { SupportedChains } from '../../src/constants/blockchains';
-
-describe('lookForTx test suite', function () {
-  const MOCK_TRANSACTION_ID = 'mock-transaction-id';
-  const fixtureCustomTxData: TransactionData = {
-    revokedAddresses: [],
-    time: '2020-04-20T00:00:00Z',
-    remoteHash: 'a-remote-hash',
-    issuingAddress: 'from-custom-explorer'
-  };
-
-  const fixtureDefaultTxData: TransactionData = {
-    revokedAddresses: [],
-    time: '2020-04-20T00:00:00Z',
-    remoteHash: 'a-remote-hash',
-    issuingAddress: 'from-default-explorer'
-  };
-
-  describe('given it is invoked with custom explorers with priority 1', function () {
-    let stubbedCustomExplorer: sinon.SinonStub;
-    let stubbedDefaultExplorer: sinon.SinonStub;
-    let mockExplorers: TExplorerAPIs;
-
-    beforeEach(function () {
-      stubbedCustomExplorer = sinon.stub().resolves(fixtureCustomTxData);
-      stubbedDefaultExplorer = sinon.stub().resolves(fixtureDefaultTxData);
-      mockExplorers = {
-        bitcoin: [{
-          getTxData: stubbedDefaultExplorer,
-          priority: -1
-        }],
-        ethereum: [],
-        custom: [{
-          getTxData: stubbedCustomExplorer,
-          priority: 1
-        }]
-      };
-    });
-
-    afterEach(function () {
-      stubbedCustomExplorer.resetHistory();
-      stubbedDefaultExplorer.resetHistory();
-    });
-
-    describe('given the custom explorers return the transaction', function () {
-      let response: TransactionData;
-
-      beforeEach(async function () {
-        response = await lookForTx({
-          transactionId: MOCK_TRANSACTION_ID,
-          chain: SupportedChains.Bitcoin,
-          explorerAPIs: mockExplorers
-        });
-      });
-
-      it('should retrieve the response from the default explorers', function () {
-        expect(response).toBe(fixtureDefaultTxData);
-      });
-
-      it('should have called the default explorers', function () {
-        expect(stubbedDefaultExplorer.calledOnce).toBe(true);
-      });
-
-      it('should not have called the custom explorers', function () {
-        expect(stubbedCustomExplorer.calledOnce).toBe(false);
-      });
-    });
-
-    describe('given the default explorers fail to return the transaction', function () {
-      let response: TransactionData;
-
-      beforeEach(async function () {
-        stubbedDefaultExplorer.rejects();
-        response = await lookForTx({
-          transactionId: MOCK_TRANSACTION_ID,
-          chain: SupportedChains.Bitcoin,
-          explorerAPIs: mockExplorers
-        });
-      });
-
-      it('should retrieve the response from the custom explorers', function () {
-        expect(response).toBe(fixtureCustomTxData);
-      });
-
-      it('should have called the default explorers', function () {
-        expect(stubbedDefaultExplorer.calledOnce).toBe(true);
-      });
-
-      it('should have called the custom explorers', function () {
-        expect(stubbedCustomExplorer.calledOnce).toBe(true);
-      });
-    });
-  });
-});
diff --git a/tests/helpers/lookForTx.test.ts b/tests/helpers/lookForTx.test.ts
deleted file mode 100644
index 2498214..0000000
--- a/tests/helpers/lookForTx.test.ts
+++ /dev/null
@@ -1,152 +0,0 @@
-import sinon from 'sinon';
-import lookForTx, { getExplorersByChain } from '../../src/helpers/lookForTx';
-import { SupportedChains } from '../../src/constants/blockchains';
-import { getDefaultExplorers, TExplorerAPIs } from '../../src/explorers';
-import { TransactionData } from '../../src/models/TransactionData';
-import CONFIG from '../../src/constants/config';
-
-describe('lookForTx test suite', function () {
-  const MOCK_TRANSACTION_ID = 'mock-transaction-id';
-  const defaultExplorerAPIs: TExplorerAPIs = getDefaultExplorers();
-
-  describe('given there are no custom explorers', function () {
-    it('should call and resolve from the explorers passed', async function () {
-      const mockTxData: TransactionData = {
-        revokedAddresses: [],
-        time: '2020-04-20T00:00:00Z',
-        remoteHash: 'a-remote-hash',
-        issuingAddress: 'an-issuing-address'
-      };
-      const stubbedExplorer = sinon.stub().resolves(mockTxData);
-      const mockExplorers: TExplorerAPIs = {
-        bitcoin: [{
-          getTxData: stubbedExplorer
-        }],
-        ethereum: []
-      };
-      const output = await lookForTx({
-        transactionId: 'a-transaction-id',
-        chain: SupportedChains.Bitcoin,
-        explorerAPIs: mockExplorers
-      });
-      expect(output).toEqual(mockTxData);
-    });
-  });
-
-  describe('given it is called with a transactionId, a chain and a certificateVersion', function () {
-    describe('given the chain is invalid', function () {
-      it('should throw an error', async function () {
-        await expect(lookForTx({
-          transactionId: MOCK_TRANSACTION_ID,
-          chain: 'invalid-chain' as SupportedChains,
-          explorerAPIs: defaultExplorerAPIs
-        })).rejects.toThrow('Chain is not natively supported. Use custom explorers to retrieve tx data.');
-      });
-    });
-
-    describe('given MinimumBlockchainExplorers is less than 0', function () {
-      it('should throw an error', async function () {
-        const originalValue = CONFIG.MinimumBlockchainExplorers;
-        CONFIG.MinimumBlockchainExplorers = -1;
-        await expect(lookForTx({
-          transactionId: MOCK_TRANSACTION_ID,
-          chain: SupportedChains.Bitcoin,
-          explorerAPIs: defaultExplorerAPIs
-        })).rejects.toThrow('Invalid application configuration;' +
-          ' check the CONFIG.MinimumBlockchainExplorers configuration value');
-        CONFIG.MinimumBlockchainExplorers = originalValue;
-      });
-    });
-
-    describe('given MinimumBlockchainExplorers is higher than BlockchainExplorers length', function () {
-      it('should throw an error', async function () {
-        const originalValue = CONFIG.MinimumBlockchainExplorers;
-        CONFIG.MinimumBlockchainExplorers = defaultExplorerAPIs.bitcoin.length + 1;
-        await expect(lookForTx({
-          transactionId: MOCK_TRANSACTION_ID,
-          chain: SupportedChains.Bitcoin,
-          explorerAPIs: defaultExplorerAPIs
-        })).rejects.toThrow('Invalid application configuration;' +
-          ' check the CONFIG.MinimumBlockchainExplorers configuration value');
-        CONFIG.MinimumBlockchainExplorers = originalValue;
-      });
-    });
-  });
-});
-
-describe('getExplorersByChain test suite', function () {
-  describe('selecting the explorers', function () {
-    describe('given the chain is Ethereum main', function () {
-      it('should use the ethereum specific explorers', function () {
-        const selectedSelectors = getExplorersByChain(SupportedChains.Ethmain, getDefaultExplorers());
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(2);
-      });
-    });
-
-    describe('given the chain is Ethereum ropsten', function () {
-      it('should use the ethereum specific explorers', function () {
-        const selectedSelectors = getExplorersByChain(SupportedChains.Ethropst, getDefaultExplorers());
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(2);
-      });
-    });
-
-    describe('given the chain is Ethereum rinkeby', function () {
-      it('should use the ethereum specific explorers', function () {
-        const selectedSelectors = getExplorersByChain(SupportedChains.Ethrinkeby, getDefaultExplorers());
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(2);
-      });
-    });
-
-    describe('given the chain is Bitcoin mainnet', function () {
-      it('should use the bitcoin specific explorers', function () {
-        const selectedSelectors = getExplorersByChain(SupportedChains.Bitcoin, getDefaultExplorers());
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(4);
-      });
-    });
-
-    describe('given the chain is Bitcoin mocknet', function () {
-      it('should use the bitcoin specific explorers', function () {
-        const selectedSelectors = getExplorersByChain(SupportedChains.Mocknet, getDefaultExplorers());
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(4);
-      });
-    });
-
-    describe('given the chain is Bitcoin testnet', function () {
-      it('should use the bitcoin specific explorers', function () {
-        const selectedSelectors = getExplorersByChain(SupportedChains.Testnet, getDefaultExplorers());
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(4);
-      });
-    });
-
-    describe('given the chain is Bitcoin regtest', function () {
-      it('should use the bitcoin specific explorers', function () {
-        const selectedSelectors = getExplorersByChain(SupportedChains.Regtest, getDefaultExplorers());
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(4);
-      });
-    });
-
-    describe('in all other cases', function () {
-      it('should return the custom explorers', function () {
-        const explorers = {
-          ...getDefaultExplorers(),
-          custom: [
-            {
-              getTxData: () => '' as any,
-              priority: 0
-            }
-          ]
-        };
-        const selectedSelectors = getExplorersByChain('Matic' as any, explorers);
-        // because they are wrapped, we don't necessarily have the deep nature of the result, so we use a weak test to ensure
-        expect(selectedSelectors.length).toBe(1);
-      });
-    });
-  });
-});
diff --git a/tests/services/request.test.ts b/tests/services/request.test.ts
deleted file mode 100644
index 22e26a1..0000000
--- a/tests/services/request.test.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import { request } from '../../src/services/request';
-
-describe('Services Request test suite', function () {
-  describe('given it is called without a URL', function () {
-    it('should throw an error', async function () {
-      await request({} as any).catch(err => {
-        expect(err.message).toBe('URL is missing');
-      });
-    });
-  });
-});
diff --git a/tests/services/transaction-apis.test.ts b/tests/services/transaction-apis.test.ts
deleted file mode 100644
index 6ab2697..0000000
--- a/tests/services/transaction-apis.test.ts
+++ /dev/null
@@ -1,80 +0,0 @@
-import { buildTransactionServiceUrl } from '../../src/services/transaction-apis';
-import { explorerApi as Blockcypher } from '../../src/explorers/bitcoin/blockcypher';
-import { explorerApi as Etherscan } from '../../src/explorers/ethereum/etherscan';
-
-describe('Transaction APIs test suite', function () {
-  let fixtureApi;
-  const fixtureTransactionId = 'fixture-transaction-id';
-
-  describe('buildTransactionServiceUrl method', function () {
-    describe('handling test APIs', function () {
-      beforeEach(function () {
-        fixtureApi = Blockcypher;
-      });
-
-      describe('given isTestApi is set to false', function () {
-        it('should return the mainnet address with the transaction ID', function () {
-          expect(buildTransactionServiceUrl({
-            explorerAPI: fixtureApi,
-            transactionId: fixtureTransactionId
-          })).toEqual(`https://api.blockcypher.com/v1/btc/main/txs/${fixtureTransactionId}?limit=500`);
-        });
-      });
-
-      describe('given isTestApi is set to true', function () {
-        it('should return the testnet address with the transaction ID', function () {
-          expect(buildTransactionServiceUrl({
-            explorerAPI: fixtureApi,
-            transactionId: fixtureTransactionId,
-            isTestApi: true
-          })).toEqual(`https://api.blockcypher.com/v1/btc/test3/txs/${fixtureTransactionId}?limit=500`);
-        });
-      });
-    });
-
-    describe('given it is called with an API token', function () {
-      const fixtureAPIToken = 'a-test-api-token';
-
-      beforeEach(function () {
-        fixtureApi = JSON.parse(JSON.stringify(Etherscan));
-        fixtureApi.key = fixtureAPIToken;
-        fixtureApi.keyPropertyName = 'apikey';
-      });
-
-      describe('and there are already some parameters in the URL', function () {
-        it('should construct the URL to add the token with &', function () {
-          const output = buildTransactionServiceUrl({
-            explorerAPI: fixtureApi,
-            transactionId: fixtureTransactionId
-          });
-          const expectedOutput = `https://api.etherscan.io/api?module=proxy&action=eth_getTransactionByHash&txhash=fixture-transaction-id&apikey=${fixtureAPIToken}`;
-          expect(output).toBe(expectedOutput);
-        });
-      });
-
-      describe('and there are no parameters in the URL yet', function () {
-        it('should construct the URL to add the token with ?', function () {
-          fixtureApi.serviceURL = 'https://api.etherscan.io/api';
-          const output = buildTransactionServiceUrl({
-            explorerAPI: fixtureApi,
-            transactionId: fixtureTransactionId
-          });
-          const expectedOutput = `https://api.etherscan.io/api?apikey=${fixtureAPIToken}`;
-          expect(output).toBe(expectedOutput);
-        });
-      });
-
-      describe('and the keyPropertyName is not set', function () {
-        it('should throw', function () {
-          delete fixtureApi.keyPropertyName;
-          expect(() => {
-            buildTransactionServiceUrl({
-              explorerAPI: fixtureApi,
-              transactionId: fixtureTransactionId
-            });
-          }).toThrow('No keyPropertyName defined for explorerAPI etherscan');
-        });
-      });
-    });
-  });
-});
diff --git a/tests/verification/failing-altered-document.test.ts b/tests/verification/failing-altered-document.test.ts
index 2c4efc2..cbad570 100644
--- a/tests/verification/failing-altered-document.test.ts
+++ b/tests/verification/failing-altered-document.test.ts
@@ -1,7 +1,7 @@
 import sinon from 'sinon';
+import * as explorerLookup from '@blockcerts/explorer-lookup';
 import alteredBlockcertsV3Fixture from '../fixtures/altered-blockcerts-v3';
 import { MerkleProof2019, MerkleProof2019VerificationResult } from '../../src/MerkleProof2019';
-import * as lookForTxFunctions from '../../src/helpers/lookForTx';
 import fixtureTransactionData from '../fixtures/transactionData';
 
 describe('when the process fails', function () {
@@ -9,7 +9,7 @@ describe('when the process fails', function () {
 
   beforeEach(function () {
     instance = new MerkleProof2019({ document: alteredBlockcertsV3Fixture });
-    sinon.stub(lookForTxFunctions, 'default').resolves(fixtureTransactionData);
+    sinon.stub(explorerLookup, 'lookForTx').resolves(fixtureTransactionData);
   });
 
   afterEach(function () {
diff --git a/tsconfig.cjs.json b/tsconfig.cjs.json
new file mode 100644
index 0000000..18cbee4
--- /dev/null
+++ b/tsconfig.cjs.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "module": "commonjs",
+    "outDir": "lib/cjs"
+  }
+}
diff --git a/tsconfig.json b/tsconfig.json
index c0afd1b..fe5c3e4 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,15 +8,17 @@
     "experimentalDecorators": true,
     "moduleResolution": "node",
     "baseUrl": "src",
-    "module": "commonjs",
+    "module": "ES2020",
     "resolveJsonModule": true,
     "esModuleInterop": true,
-    "sourceMap": true,
-    "skipLibCheck": true
+    "skipLibCheck": true,
+    "outDir": "lib/esm",
+    "declaration": true
   },
   "compileOnSave": false,
   "exclude": [
     "node_modules",
-    "tests"
+    "tests",
+    "lib"
   ]
 }