Warning: Deprecated!

New implementation is here: https://github.com/0xPolygonID/onchain-merklized-issuer-demo

Onchain-issuer-integration-demo

This is an example of using an on-chain issuer. In this application, we communicate with Metamask to retrieve the user's balance and the issuer's claim about the user's balance via the on-chain issuer.

There are three main components in this application:

1. On-chain issuer (demo|contract)
2. Server for user authorization
3. Front-end component for communication with Metamask

Requirments:

1. Node js => 18.x
2. Go => 1.20.x
3. npm => 9.x.x
4. docker => 20.x

Configuration exists on run.sh file:

ONCHAIN_ISSUER_CONTRACT_ADDRESS=<ONCHAIN_ISSUER_CONTRACT_ADDRESS>
URL_MUMBAI_NODE=<URL_TO_POLYGON_MUMBAI_NODE>
URL_POLYGON_NODE=<URL_TO_POLYGON_MAINNET_NODE>
ONCHAIN_CONTRACT_OWNER=<PRIVATE_KEY_IS_USED_FOR_DEPLOY_ONCHAIN_ISSUER_CONTRACT>
MUMBAI_CONTRACT_STATE_ADDRESS=0x134B1BE34911E39A8397ec6289782989729807a4
MAIN_CONTRACT_STATE_ADDRESS=0xdc2A724E6bd60144Cde9DEC0A38a26C619d84B90
ONCHAIN_ISSUER_CONTRACT_BLOCKCHAIN=<BLOCKCHAIN_OF_ISSUER_CONTRACT>
ONCHAIN_ISSUER_CONTRACT_NETWORK=<BLOCKCHAIN_OF_WITH_ISSUER_CONTRACT>
NGROK_AUTHTOKEN=<NGROK_AUTHTOKEN> # use https://ngrok.com/ to get the auth token 

How to run:

1. Clone this repository:

   git clone https://github.com/0xPolygonID/onchain-issuer-integration-demo

2. Deploy onchain issuer contract. Use these next states:
   • For mumbai network: 0x134B1BE34911E39A8397ec6289782989729807a4
   • For mainnet network: 0x624ce98D2d27b20b8f8d521723Df8fC4db71D79D
3. Fill in the configuration files with the actual values.
4. Run the run.sh script:

   ./run.sh

5. Open http://localhost:3000 in your web browser.

How to verify the balance claim:

1. Go to https://verifier-v2.polygonid.me/
2. Choose custom from the drop down
3. Fill form:
   • Circuit Id: Credential Atomic Query MTP;
   • Url: https://gist.githubusercontent.com/ilya-korotya/b06baa37453ed9aedfcb79100b84d51f/raw/balance-v1.jsonld;
   • Type: BalanceCredential;
   • Field: balance;
   • Operator: all operators work for the claim;
   • Value: set value that you want to verify;
4. Press submit;
5. Use mobile application for verify.

Tested on:

1. MacBook Pro M1, OS: Monterey 12.3