Legacy Account Key

AccountKeyLegacy

Import the ethers and @kaiachain/ethers-ext packages to add kaia features on ethers.js

Define sender address and private key

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

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

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

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

Send the tx to the blockchain. Function sendTransaction internally signs with the private key of the account and then transmits it to the blockchain network.

The wait function returns the tx receipt if it is completed in the blockchain.

AccountUpdateWithLegacy.js


const { ethers } = require("ethers");
const { Wallet, TxType, AccountKeyType} = require("@kaiachain/ethers-ext/v5");
// Using legacy AccountKey to execute this example repeatedly.
// But you might want to register a different Accountkey.
const senderAddr = "0xecbf243ac167a3b5097fef758e07881582a89027";
const senderPriv = "0xc696ccd259792f2ffb87e0012e4a37ae3526a3224686225af679e3aaa2aeab0d";
const provider = new ethers.providers.JsonRpcProvider("https://public-en-kairos.node.kaia.io");
const wallet = new Wallet(senderPriv, provider);
async function main() {
  const tx = {
    type: TxType.AccountUpdate,
    from: senderAddr,
    key: {
      type: AccountKeyType.Legacy,
    }
  };
  const sentTx = await wallet.sendTransaction(tx);
  console.log("sentTx", sentTx.hash);
  const receipt = await sentTx.wait();
  console.log("receipt", receipt);
}
main().catch(console.error);

output


❯ js AccountUpdateWithLegacy.js
pub 0x026e63942bece2c9c346fba11c493dc0d7ae0ab14b7b75c6d988619228cbb4e996
sentTx 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
}