diff --git a/hardhat.config.ts b/hardhat.config.ts
index 24164aec..082e898f 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -7,6 +7,10 @@ import "solidity-docgen";
 
 dotenv.config();
 
+// first address from `test test test test test test test test test test test junk`
+const dummyPrivateKey =
+  "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
+
 const config: HardhatUserConfig = {
   solidity: {
     version: "0.8.19",
@@ -39,45 +43,53 @@ const config: HardhatUserConfig = {
   networks: {
     mainnet: {
       chainId: 1,
-      url: process.env.MAINNET_PROVIDER || "",
+      url:
+        process.env.MAINNET_PROVIDER || "https://ethereum-rpc.publicnode.com",
       accounts: process.env.MAINNET_DEPLOYER_PRIVATE_KEY
         ? [process.env.MAINNET_DEPLOYER_PRIVATE_KEY]
-        : [],
+        : [dummyPrivateKey],
     },
     sepolia: {
       chainId: 11155111,
-      url: process.env.SEPOLIA_PROVIDER || "",
+      url:
+        process.env.SEPOLIA_PROVIDER ||
+        "https://ethereum-sepolia-rpc.publicnode.com",
       accounts: process.env.SEPOLIA_DEPLOYER_PRIVATE_KEY
         ? [process.env.SEPOLIA_DEPLOYER_PRIVATE_KEY]
-        : [],
+        : [dummyPrivateKey],
     },
     polygon: {
       chainId: 137,
-      url: process.env.POLYGON_PROVIDER || "",
+      url:
+        process.env.POLYGON_PROVIDER ||
+        "https://polygon-bor-rpc.publicnode.com",
       accounts: process.env.POLYGON_DEPLOYER_PRIVATE_KEY
         ? [process.env.POLYGON_DEPLOYER_PRIVATE_KEY]
-        : [],
+        : [dummyPrivateKey],
     },
     baseSepolia: {
       chainId: 84532,
-      url: process.env.BASE_SEPOLIA_PROVIDER || "",
+      url:
+        process.env.BASE_SEPOLIA_PROVIDER ||
+        "https://base-sepolia-rpc.publicnode.com",
       accounts: process.env.BASE_SEPOLIA_DEPLOYER_PRIVATE_KEY
         ? [process.env.BASE_SEPOLIA_DEPLOYER_PRIVATE_KEY]
-        : [],
+        : [dummyPrivateKey],
     },
     base: {
       chainId: 8453,
-      url: process.env.BASE_PROVIDER || "",
+      url: process.env.BASE_PROVIDER || "https://base-rpc.publicnode.com",
       accounts: process.env.BASE_DEPLOYER_PRIVATE_KEY
         ? [process.env.BASE_DEPLOYER_PRIVATE_KEY]
-        : [],
+        : [dummyPrivateKey],
     },
     optimism: {
       chainId: 10,
-      url: process.env.OPTIMISM_PROVIDER || "",
+      url:
+        process.env.OPTIMISM_PROVIDER || "https://optimism-rpc.publicnode.com",
       accounts: process.env.OPTIMISM_DEPLOYER_PRIVATE_KEY
         ? [process.env.OPTIMISM_DEPLOYER_PRIVATE_KEY]
-        : [],
+        : [dummyPrivateKey],
     },
   },
   etherscan: {
@@ -87,7 +99,7 @@ const config: HardhatUserConfig = {
       polygon: process.env.POLYGONSCAN_API_KEY || "",
       baseSepolia: process.env.BASESCAN_API_KEY || "",
       base: process.env.BASESCAN_API_KEY || "",
-      optimism: process.env.OPTIMISTIC_ETHERSCAN_API_KEY || "",
+      optimisticEthereum: process.env.OPTIMISTIC_ETHERSCAN_API_KEY || "",
     },
     customChains: [
       {
@@ -100,6 +112,9 @@ const config: HardhatUserConfig = {
       },
     ],
   },
+  sourcify: {
+    enabled: true,
+  },
   paths: {
     deploy: "deploy/core",
   },