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Get Verification Key

The verificationKey method allows you to retrieve important verification keys associated with specific contracts in the database. These keys include details like the Merkle tree height, key hashes, and raw encoded data. They are essential for verifying zero-knowledge proofs and understanding the cryptographic configuration of the system.

Method Signature​

verificationKey(): Promise<TVerificationKeyResponse>;

Syntax​

import { ZkDatabase } from 'zkdb';

const zkdb = await ZkDatabase.connect({
  userName: "chiro-user",
  privateKey: "EKFTciRxyxshZjimay9sktsn7v5PvmC5zPq7q4JnitHUytxUVnFP",
  environment: "node",
  // This URL is for test environment
  url: "https://api.zkdatabase.org/graphql",
});

await zkdb.auth.signIn();


console.log(await zkdb.db("zkdb_test").verificationKey());

await zkdb.auth.signOut();

Returns​

  • A promise that resolves to a TVerificationKeyResponse or null if no verification keys are available.
TVerificationKeyResponse​

This is a record mapping contract names EContractName to their corresponding verification key details TZkDbVerificationKeyRecord.

EContractName​
ValueDescription
RollupRepresents the verification key for rollup contracts.
ContractRepresents the verification key for zkdb smart contracts.
{
  "Contract": {
    "contractName": "Contract",
    "merkleHeight": 8,
    "verificationKeyHash": "7d892b456151a3c95e27de7ef8fb3dfdfe2294b4d72d5c89e8e373005aa6358a",
    "data": "AQFihNY9Eur2I...",
    "hash": "11039021637501775772008318574453933091253743015110713939551628556211349714893",
    "createdAt": "2025-01-21T17:16:38.294Z",
    "updatedAt": "2025-01-21T17:16:38.294Z"
  },
  "Rollup": {
    "contractName": "Rollup",
    "merkleHeight": 8,
    "verificationKeyHash": "53d15949c41469c0bc0942b87a7678a05517c03731c4a9a993a96f9bea87ceb3",
    "data": "AQHwbVNVDjAVn...",
    "hash": "9102873522666665449936385888808683444277565713030518648166535561287070859687",
    "createdAt": "2025-01-21T17:16:38.294Z",
    "updatedAt": "2025-01-21T17:16:38.294Z"
  }
}