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Submit The Proof Request

Code​

import { ZKP } from "@bel2labs/sdk";
import { ethers } from "ethers";

const verification = await ZKP.EthersV6.TransactionVerification.create(
  txId,
  20
);
if (!verification.isSubmitted()) {
  const provider = new ethers.BrowserProvider(window.ethereum);
  const signer = await provider.getSigner();

  verification.status$.subscribe((status) => {
    console.log("New status:", status);
  });

  const response = await verification.submitVerific

Breakdown​

Imports:​

  • ZKP from @bel2labs/sdk for Zero-Knowledge Proof functionalities.
  • ethers from ether.js for EVM interactions.

Create Verification Request:​

ZKP.EthersV6.TransactionVerification.create(txId, 20) creates a verification request for a BTC transaction with ID txId over EVM whose chain ID is 20 (Elastos ESC mainnet).

Check Submission Status:​

verification.isSubmitted() checks if the verification request has been previously submitted.

Provider and Signer Setup:​

  • new ethers.BrowserProvider(window.ethereum) creates a provider using the user's MetaMask wallet.
  • provider.getSigner() retrieves the signer's account.

Status Subscription:​

verification.status$.subscribe(...) subscribes to status updates of the verification request and logs the new status to the console.

Submit Verification Request:​

verification.submitVerificationRequest(signer) submits the verification request using the signer's account.