The getAttestations function fetches attestations for a specified address and blockchain in Ethereum Attestation Service (EAS). It allows optional filtering based on schema IDs, revocation status, expiration time, and the number of attestations to return. In the example, we use the Coinbase Verified Account schema ID.

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Usage

import { getAttestations } from '@coinbase/onchainkit/identity';
import { base } from 'viem/chains';

const COINBASE_VERIFIED_ACCOUNT_SCHEMA_ID =
'0xf8b05c79f090979bf4a80270aba232dff11a10d9ca55c4f88de95317970f0de9';

const address = '0x1234567890abcdef1234567890abcdef12345678';
const attestationsOptions = {
schemas: [COINBASE_VERIFIED_ACCOUNT_SCHEMA_ID],
};

const attestations = await getAttestations(address, base, attestationsOptions);

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Returns

Promise<Attestation[]>

type Attestation = {
  /** The attester who created the attestation. */
  attester: Address;
  /** The attestation data decoded to JSON. */
  decodedDataJson: string;
  /** The Unix timestamp when the attestation expires (0 for no expiration). */
  expirationTime: number;
  /** The unique identifier of the attestation. */
  id: string;
  /** The Ethereum address of the recipient of the attestation. */
  recipient: Address;
  /** The Unix timestamp when the attestation was revoked, if applicable. */
  revocationTime: number;
  /** A boolean indicating whether the attestation is revoked or not. */
  revoked: boolean;
  /** The schema identifier associated with the attestation. */
  schemaId: EASSchemaUid;
  /** The Unix timestamp when the attestation was created. */
  time: number;
};

type Address = `0x${string}`;
type EASSchemaUid = `0x${string}`;

​
Parameters

​
Address

type Address = `0x${string}`; // The address for which attestations are being queried.

​
Chain

type Chain = { // The blockchain of interest.
  id: string;
  name: string;
  network: string;
  chainId: number;
  nativeCurrency: {
    name: string;
    symbol: string;
    decimals: number;
  };
  rpcUrls: string[];
  blockExplorerUrls: string[];
};

​
GetAttestationsOptions

type GetAttestationsParams = {
  /** Array of schema UIDs to filter by */
  schemas?: EASSchemaUid[];
  /** Filter by revocation status */
  revoked?: boolean;
  /** Filter by expiration time */
  expirationTime?: number;
  /** Limit number of results */
  limit?: number;
};