diff --git a/typescript/src/services/tbtc.ts b/typescript/src/services/tbtc.ts
index abb7bd9de..5c323d715 100644
--- a/typescript/src/services/tbtc.ts
+++ b/typescript/src/services/tbtc.ts
@@ -15,6 +15,7 @@ import { ElectrumClient } from "../lib/electrum"
  * Entrypoint component of the tBTC v2 SDK.
  */
 export class TBTC {
+  public readonly testField = "test"
   /**
    * Service supporting the tBTC v2 deposit flow.
    */