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Legacy Account Key

AccountKeyLegacy

Import the @kaiachain/web3js-ext packages to add kaia features on web3

Define sender address, sender private key and new private key to be changed

Set up the provider with the specified kairos testnet URL. A provider in web3js is a read-only abstraction to access the blockchain data.

Also, you can change the provider URL from kairos to quicknode

Define a web3 instance using the provider

Create a sender's wallet with the private key and provider

Declare a transaction in the key field with the type AccountKeyType.Legacy

Sign the transaction with sender's wallet

Send the signed tx to the blockchain. It will return the receipt of the transaction

AccountUpdateWithLegacy.js


const { Web3, TxType, AccountKeyType, getPublicKeyFromPrivate } = require("@kaiachain/web3js-ext");
// Using senderPriv == senderNewPriv to execute this example repeatedly.
// But you might want to register a different private key.
const senderAddr = "0xecbf243ac167a3b5097fef758e07881582a89027";
const senderPriv = "0xc696ccd259792f2ffb87e0012e4a37ae3526a3224686225af679e3aaa2aeab0d";
const provider = new Web3.providers.HttpProvider("https://public-en-kairos.node.kaia.io");
const web3 = new Web3(provider);
const senderAccount = web3.eth.accounts.privateKeyToAccount(senderPriv);
async function main() {
  const tx = {
    type: TxType.AccountUpdate,
    from: senderAddr,
    key: {
      type: AccountKeyType.Legacy,
    }
  };
  const signResult = await senderAccount.signTransaction(tx);
  console.log("signedTx", signResult.transactionHash);
  const receipt = await web3.eth.sendSignedTransaction(signResult.rawTransaction);
  console.log("receipt", receipt);
}
main().catch(console.error);

output


❯ js AccountUpdateWithLegacy.js
signedTx 0x5fedabfb343f607fe0f0adfa9ef54d738312bbec98bfc02839cdae2e968f5f90
receipt {
  to: '0x24e8eFD18D65bCb6b3Ba15a4698c0b0d69d13fF7',
  from: '0x24e8eFD18D65bCb6b3Ba15a4698c0b0d69d13fF7',
  contractAddress: null,
  transactionIndex: 0,
  gasUsed: BigNumber { _hex: '0xa028', _isBigNumber: true },
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  blockHash: '0x114a80bfaf346ff14fc818f5053a6a94201684fc02316529d5d2cfdb68e7b98d',
  transactionHash: '0x5fedabfb343f607fe0f0adfa9ef54d738312bbec98bfc02839cdae2e968f5f90',
  logs: [],
  blockNumber: 152203338,
  confirmations: 2,
  cumulativeGasUsed: BigNumber { _hex: '0xa028', _isBigNumber: true },
  effectiveGasPrice: BigNumber { _hex: '0x05d21dba00', _isBigNumber: true },
  status: 1,
  type: 0,
  byzantium: true
}