Cosmos SDK - Nibiru

Pre-requisite

At this stage, we assume that you are familiar with the steps at ReactJs.

We will be using Keplr as a wallet to interact with the frontend interface. Make sure that you have it installed and funded with testnet Nibi.

You can access the code of this walkthrough on Gitlab:

Contract deployment

Clone the client contract repo.

This Nibiru contract serves as a client to our Reclaim contract. It instantiates Reclaim's contract, handles proofs, and verifies them.

git clone https://gitlab.reclaimprotocol.org/starterpacks/nibiru-client-contract
make build

Add your wallet information.

As stated in the README, add your wallet credentials to your node/.env.

MNEMONIC= // Your mnemonic

In the node directory, run npm run start, you can upload the contract, instantiate it, and verify a Reclaim proof on it. Run the script and take a note of your contract address, we will be using it later.

verify2

React client development

Cloning the frontend repo.

git clone https://gitlab.reclaimprotocol.org/starterpacks/nibiru-client-frontend
 
cd nibiru-client-frontend
 
npm install

Code discovery (App.js).

We will submit the proof on chain once we get the onSuccessCallback. Fill in your Reclaim credentials marked with //TODOs.

import './App.css'
import { Reclaim } from '@reclaimprotocol/js-sdk'
import { useState } from 'react'
import VerifyProof from './VerifyProof'
import ConnectButton from './ConnectButton'
 
function App() {
  const [url, setUrl] = useState('')
  const [ready, setReady] = useState(false);
  const [proof, setProof] = useState({});
 
  const reclaimClient = new Reclaim.ProofRequest('') //TODO: replace with your applicationId
 
  async function generateVerificationRequest() {
    const providerId = '' //TODO: replace with your provider ids you had selected while creating the application
    const APP_SECRET = "" //TODO : replace with your APP_SECRET
 
    await reclaimClient.addContext(
      (`user's address`),
      ('for acmecorp.com on 1st january')
    )
 
    await reclaimClient.buildProofRequest(providerId)
 
    reclaimClient.setSignature(
      await reclaimClient.generateSignature(
        APP_SECRET 
      )
    )
 
    const { requestUrl, statusUrl } =
      await reclaimClient.createVerificationRequest()
 
    setUrl(requestUrl)
 
    await reclaimClient.startSession({
      onSuccessCallback: proof => {
        console.log('Verification success', proof)
        setReady(true);
        setProof(proof[0]);
        // Your business logic here
      },
      onFailureCallback: error => {
        console.error('Verification failed', error)
        // Your business logic here to handle the error
      }
    })
  }
 
  return (
    <div className='App'>
      <ConnectButton/>
      <button onClick={() => generateVerificationRequest()}>
        Generate Verification Request
      </button>
      <button onClick={() => window.open(url, '_blank')}>Open link</button>
      {ready && <VerifyProof proof={proof}></VerifyProof>}
    </div>
  )
}
 
export default App

Code discovery (src/nibiJs/nibijsFunctions.js).

Replace with your own Reclaim client contract's address.

import { useContext } from "react";
import { NibijsContext } from "./nibijsContext";
 
// Uncomment for mainnet
// let contractAddress = "nibi1d7ffxpewty3zd0lq39l9rxc2wtmgv8j3gsg3qf5yglzewqp84mkqlttmme";
 
let contractAddress = "nibi1l0yhggdxmvkcjd9a304gkel770rkyl2vy272q58seyp5sys7486spversq";
 
const NibijsFunctions = () => {
  const { nibijs, nibiAddress } = useContext(NibijsContext);
 
  let verify_proof = async (proof) => {
 
    let tx = await nibijs.wasmClient.execute(
      nibiAddress,
      contractAddress,
      {
        verify_proof: {
          proof: proof,
        },
      },
      "auto"
    );
 
    console.log(tx);
  };
 
  return {
    verify_proof
  };
};
 
export { NibijsFunctions };

Submitting the proof.

npm run build
 
npm run start

After requesting a proof from Reclaim and performing the verification on your end, a verify proof button will appear on the screen. Make sure your Keplr is connected, click the button, a wallet pop-up will show prompting you to submit.

screen2

keplr2

Now your proof will get approved on-chain, here is the sample transaction from the screenshot above.