Lookup Identifier

SocialConnect protocol only store the obfuscated version of the identifiers on-chain. In order to go from plaintext identifier to its obfuscated version you need to interact with ODIS API.

Once you have the obfuscated identifier you need to decide under which Issuer to search for the account.

The following steps will help you find an account address from a plaintext identifier.

You can install @celo/identity package using the following command

npm i @celo/identity

Get the obfuscated identifier from plaintext identifier

import {
  createWalletClient
  getContract,
  http,
  Hex,
  http
} from "viem";
import { IdentifierPrefix } from "@celo/identity/lib/odis/identifier";
import { AuthenticationMethod, OdisContextName } from "@celo/identity/lib/odis/query";
import { OdisUtils } from "@celo/identity";
import { celo, celoAlfajores } from "viem/chains";
 
let account = privateKeyToAccount(process.env.ISSUER_PRIVATE_KEY as Hex);
 
const chain =
  process.env.NEXT_PUBLIC_ENVIRONMENT === "TESTNET" ? celoAlfajores : celo;
 
 
let wallet = createWalletClient({
  account,
  chain,
  transport: http(),
});
 
const identifier = "+1234567890"; // Dummy
const identifierType = IdentifierPrefix.PHONE_NUMBER;
 
const SERVICE_CONTEXT =
  process.env.NEXT_PUBLIC_ENVIRONMENT === "TESTNET"
  ? OdisContextName.ALFAJORES
  : OdisContextName.MAINNET;
 
const serviceContext = OdisUtils.Query.getServiceContext(SERVICE_CONTEXT);
 
const authSigner = {
  authenticationMethod: AuthenticationMethod.ENCRYPTION_KEY,
 
  // Use the recommended authentication method to save on ODIS quota
  // For steps to set up DEK, refer to the provided GitHub link - https://github.com/celo-org/social-connect/blob/main/docs/key-setup.md
  rawKey: process.env.DEK_PRIVATE_KEY as string,
}
 
async function getAccountAddress() {
  return (await wallet.getAddresses())[0];
}
 
async function getObfuscatedId(plaintextId) {
  let accountAddress = await getAccountAddress();
 
  const { obfuscatedIdentifier } =
    await OdisUtils.Identifier.getObfuscatedIdentifier(
      plaintextId,
      identifierType,
      accountAddress,
      authSigner,
      serviceContext
    );
 
  return obfuscatedIdentifier;
}

Lookup the obfuscated identifier in FederatedAttestations.sol

import {
  createWalletClient
  getContract,
  http,
  Hex,
  http
} from "viem";
import { federatedAttestationsABI } from "@celo/abis";
import { celo, celoAlfajores } from "viem/chains";
 
const chain =
  process.env.NEXT_PUBLIC_ENVIRONMENT === "TESTNET" ? celoAlfajores : celo;
 
 
let wallet = createWalletClient({
  account,
  chain,
  transport: http(),
});
 
const FA_PROXY_ADDRESS =
  process.env.NEXT_PUBLIC_ENVIRONMENT === "TESTNET"
    ? "0x70F9314aF173c246669cFb0EEe79F9Cfd9C34ee3"
    : "0x0aD5b1d0C25ecF6266Dd951403723B2687d6aff2";
 
const federatedAttestationsContract = getContract({
    address: FA_PROXY_ADDRESS,
    abi: federatedAttestationsABI,
    client: wallet,
});
 
async function lookup(plaintextId){
 
  const obfuscatedId = getObfuscatedId(plaintextId); // getObfuscatedId code above
 
  const issuerAddresses = ["0x..."] // Issuer under which you want to lookup the identifier
 
  const attestations =
    await federatedAttestationsContract.read.lookupAttestations([
      obfuscatedId,
      issuerAddresses,
  ]);
 
  const accounts = attestations[1]; // All accounts that map to the obfuscated identifier under the issuer
}

Buy Odis Quota and Check Balance Register Identifier