SignerChange Event

This JavaScript script utilizes the Web3.js library to interact with a smart contract. It searches for events called 'SignerChange' within a range of specific validator identifiers. The script retrieves and displays information about changes in signatories ('SignerChange') for each validator in the specified range, providing the addresses of the old and new signatories for each event. This type of analysis is useful for tracking and auditing changes in signatories in a smart contract.

const { Web3 } = require('web3');
const sleep = (ms) => new Promise(resolve => setTimeout(resolve, ms)); 
const readline = require('readline');
const { promisify } = require('util');

const web3 = new Web3('https://your-rpc-ethereum');
const contractAddress = '0xa59c847bd5ac0172ff4fe912c5d29e5a71a7512b'
const contractABI = [
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "_registry",
        "type": "address"
      }
    ],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "fee",
        "type": "uint256"
      }
    ],
    "name": "ClaimFee",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "totalAmount",
        "type": "uint256"
      }
    ],
    "name": "ClaimRewards",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "newValidatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "oldValidatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "ConfirmAuction",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "rewards",
        "type": "uint256"
      }
    ],
    "name": "DelegatorClaimedRewards",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "totalStaked",
        "type": "uint256"
      }
    ],
    "name": "DelegatorRestaked",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "DelegatorUnstaked",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "newDynasty",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "oldDynasty",
        "type": "uint256"
      }
    ],
    "name": "DynastyValueChange",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "exitEpoch",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "signer",
        "type": "address"
      }
    ],
    "name": "Jailed",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "previousOwner",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "newOwner",
        "type": "address"
      }
    ],
    "name": "OwnershipTransferred",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "newProposerBonus",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "oldProposerBonus",
        "type": "uint256"
      }
    ],
    "name": "ProposerBonusChange",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "total",
        "type": "uint256"
      }
    ],
    "name": "Restaked",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "newReward",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "oldReward",
        "type": "uint256"
      }
    ],
    "name": "RewardUpdate",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "tokens",
        "type": "uint256"
      }
    ],
    "name": "ShareBurned",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "tokens",
        "type": "uint256"
      }
    ],
    "name": "ShareMinted",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "nonce",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "oldSigner",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "newSigner",
        "type": "address"
      },
      {
        "indexed": false,
        "internalType": "bytes",
        "name": "signerPubkey",
        "type": "bytes"
      }
    ],
    "name": "SignerChange",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "nonce",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "Slashed",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "nonce",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "newAmount",
        "type": "uint256"
      }
    ],
    "name": "StakeUpdate",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "signer",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "nonce",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "activationEpoch",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "total",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "bytes",
        "name": "signerPubkey",
        "type": "bytes"
      }
    ],
    "name": "Staked",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "auctionAmount",
        "type": "uint256"
      }
    ],
    "name": "StartAuction",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "newThreshold",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "oldThreshold",
        "type": "uint256"
      }
    ],
    "name": "ThresholdChange",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "fee",
        "type": "uint256"
      }
    ],
    "name": "TopUpFee",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "signer",
        "type": "address"
      }
    ],
    "name": "UnJailed",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "nonce",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "deactivationEpoch",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "UnstakeInit",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "indexed": false,
        "internalType": "uint256",
        "name": "total",
        "type": "uint256"
      }
    ],
    "name": "Unstaked",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "newCommissionRate",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "oldCommissionRate",
        "type": "uint256"
      }
    ],
    "name": "UpdateCommissionRate",
    "type": "event"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getAccountStateRoot",
    "outputs": [
      {
        "internalType": "bytes32",
        "name": "accountStateRoot",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getStakerDetails",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "reward",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "activationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "deactivationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "_status",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getValidatorContractAddress",
    "outputs": [
      {
        "internalType": "address",
        "name": "ValidatorContract",
        "type": "address"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "isOwner",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "fee",
        "type": "uint256"
      }
    ],
    "name": "logClaimFee",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "totalAmount",
        "type": "uint256"
      }
    ],
    "name": "logClaimRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "newValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "logConfirmAuction",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "rewards",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorClaimedRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "totalStaked",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorRestaked",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorUnstaked",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "newDynasty",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldDynasty",
        "type": "uint256"
      }
    ],
    "name": "logDynastyValueChange",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "exitEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      }
    ],
    "name": "logJailed",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getAccountStateRoot",
    "outputs": [
      {
        "internalType": "bytes32",
        "name": "accountStateRoot",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getStakerDetails",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "reward",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "activationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "deactivationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "_status",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getValidatorContractAddress",
    "outputs": [
      {
        "internalType": "address",
        "name": "ValidatorContract",
        "type": "address"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "isOwner",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "fee",
        "type": "uint256"
      }
    ],
    "name": "logClaimFee",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "totalAmount",
        "type": "uint256"
      }
    ],
    "name": "logClaimRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "newValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "logConfirmAuction",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "rewards",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorClaimedRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "totalStaked",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorRestaked",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorUnstaked",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "newDynasty",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldDynasty",
        "type": "uint256"
      }
    ],
    "name": "logDynastyValueChange",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "exitEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      }
    ],
    "name": "logJailed",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getAccountStateRoot",
    "outputs": [
      {
        "internalType": "bytes32",
        "name": "accountStateRoot",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getStakerDetails",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "reward",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "activationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "deactivationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "_status",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getValidatorContractAddress",
    "outputs": [
      {
        "internalType": "address",
        "name": "ValidatorContract",
        "type": "address"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "isOwner",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "fee",
        "type": "uint256"
      }
    ],
    "name": "logClaimFee",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "totalAmount",
        "type": "uint256"
      }
    ],
    "name": "logClaimRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "newValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "logConfirmAuction",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "rewards",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorClaimedRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "totalStaked",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorRestaked",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorUnstaked",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "newDynasty",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldDynasty",
        "type": "uint256"
      }
    ],
    "name": "logDynastyValueChange",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "exitEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      }
    ],
    "name": "logJailed",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getAccountStateRoot",
    "outputs": [
      {
        "internalType": "bytes32",
        "name": "accountStateRoot",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getStakerDetails",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "reward",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "activationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "deactivationEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "_status",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getValidatorContractAddress",
    "outputs": [
      {
        "internalType": "address",
        "name": "ValidatorContract",
        "type": "address"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "isOwner",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "fee",
        "type": "uint256"
      }
    ],
    "name": "logClaimFee",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "totalAmount",
        "type": "uint256"
      }
    ],
    "name": "logClaimRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "newValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldValidatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "logConfirmAuction",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "user",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "rewards",
        "type": "uint256"
      }
    ],
    "name": "logDelegatorClaimedRewards",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "newDynasty",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "oldDynasty",
        "type": "uint256"
      }
    ],
    "name": "logDynastyValueChange",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "exitEpoch",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "signer",
        "type": "address"
      }
    ],
    "name": "logJailed",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getAccountStateRoot",
    "outputs": [
      {
        "internalType": "bytes32",
        "name": "accountStateRoot",
        "type": "bytes32"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getCommittee",
    "outputs": [
      {
        "internalType": "bytes",
        "name": "committee",
        "type": "bytes"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getEraSize",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "eraSize",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "eraId",
        "type": "uint256"
      }
    ],
    "name": "getEraStart",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "startTimestamp",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "eraId",
        "type": "uint256"
      }
    ],
    "name": "getEraValidatorRewardAccumulated",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "rewardAccumulated",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getCurrentEraId",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "eraId",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "eraId",
        "type": "uint256"
      }
    ],
    "name": "getValidatorEraRewardAccumulated",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "rewardAccumulated",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "validatorId",
        "type": "uint256"
      }
    ],
    "name": "getValidatorLockup",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "lockupDuration",
        "type": "uint256"
      },
      {
        "internalType": "uint256",
        "name": "lockupAmount",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "isOwner",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [],
    "name": "lockTokens",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [],
    "name": "renounceOwnership",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [],
    "name": "renounceOwnership",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [],
    "name": "unlockTokens",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "address",
        "name": "newOwner",
        "type": "address"
      }
    ],
    "name": "transferOwnership",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "validatorId"
      },
      {
        "internalType": "address","type": "address","name": "user"
      },
      {
        "internalType": "uint256","type": "uint256","name": "rewards"
      }
    ],
    "name": "DelegatorClaimedRewards","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "address","type": "address","name": "user"
      },
      {
        "internalType": "uint256","type": "uint256","name": "fee"
      }
    ],
    "name": "ClaimFee","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "newDynasty"
      },
      {
        "internalType": "uint256","type": "uint256","name": "oldDynasty"
      }
    ],
    "name": "DynastyValueChange","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "validatorId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "amount"
      },
      {
        "internalType": "uint256","type": "uint256","name": "totalAmount"
      }
    ],
    "name": "ClaimRewards","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "newValidatorId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "oldValidatorId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "amount"
      }
    ],
    "name": "ConfirmAuction","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "validatorId"
      },
      {
        "internalType": "address","type": "address","name": "user"
      },
      {
        "internalType": "uint256","type": "uint256","name": "amount"
      }
    ],
    "name": "DelegatorRestaked","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "validatorId"
      },
      {
        "internalType": "address","type": "address","name": "user"
      },
      {
        "internalType": "uint256","type": "uint256","name": "amount"
      }
    ],
    "name": "DelegatorUnstaked","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "validatorId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "exitEpoch"
      },
      {
        "internalType": "address","type": "address","name": "signer"
      }
    ],
    "name": "Jailed","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "bytes32","type": "bytes32","name": "accountStateRoot"
      }
    ],
    "name": "NewAccountStateRoot","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "bytes32","type": "bytes32","name": "committeeStateRoot"
      }
    ],
    "name": "NewCommitteeStateRoot","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "eraSize"
      }
    ],
    "name": "NewEraSize","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "eraId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "startTimestamp"
      }
    ],
    "name": "NewEraStart","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "eraId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "rewardAccumulated"
      }
    ],
    "name": "NewEraValidatorRewardAccumulated","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "eraId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "rewardAccumulated"
      }
    ],
    "name": "NewValidatorEraRewardAccumulated","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "uint256","type": "uint256","name": "validatorId"
      },
      {
        "internalType": "uint256","type": "uint256","name": "lockupDuration"
      },
      {
        "internalType": "uint256","type": "uint256","name": "lockupAmount"
      }
    ],
    "name": "SetValidatorLockup","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "address","type": "address","name": "previousOwner"
      }
    ],
    "name": "OwnershipRenounced","type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "internalType": "address","type": "address","name": "previousOwner"
      },
      {
        "internalType": "address","type": "address","name": "newOwner"
      }
    ],
    "name": "OwnershipTransferred","type": "event"
  }
];


const contract = new web3.eth.Contract(contractABI, contractAddress);

async function fetchEventDataForValidator(validatorId) {
  await sleep(5000);

  try {
    const events = await contract.getPastEvents('SignerChange', {
      filter: { validatorId },
      fromBlock: 'earliest',
      toBlock: 'latest',
    });

    events.forEach((event) => {
      const oldSigner = event.returnValues.oldSigner;
      const newSigner = event.returnValues.newSigner;
      console.log('Validator ID:', validatorId);
      console.log('Old Signer:', oldSigner);
      console.log('New Signer:', newSigner);
    });
  } catch (error) {
    console.error('Error fetching event logs for Validator ID:', validatorId);
    console.error(error);
  }
}

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question('Enter validator ID: ', (validatorId) => {
  rl.close();

  
  validatorId = parseInt(validatorId, 10);
  if (!isNaN(validatorId)) {
    fetchEventDataForValidator(validatorId);
  } else {
    console.error('Invalid input. Please enter a valid validator ID.');
  }
});


Dependencies Installation:

Ensure that Node.js is installed on your system. If not, you can download it from nodejs.org. Navigate to the directory where you saved the script on your system using the terminal or command prompt. Web3.js Installation:

Execute the following command to install the Web3.js library:

npm install web3

Script Editing:

Open the script (your-script.js) in a text editor. Replace 'https://your-rpc-ethereum' with the RPC URL of your Ethereum node.

In the terminal or command prompt, within the directory where the script is located, execute the following command:

node your-script.js

Make sure to replace your-script.js with the actual name of your script file. Note: that in the script, all events defined in the contract have been included, providing the flexibility to implement logic related to any specific event, not limited solely to SignerChange.

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