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Account Update

Import the web3 and @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 web3 is a read-only abstraction to access the blockchain data.

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

Create a KlaytnWeb3 instance using the provider

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

Compute the public key from the new private key

Declare a transaction in the key field with the computed public key.

Signing the transaction with the sender's private key

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

TxTypeAccountUpdate.js


const { KlaytnWeb3, TxType, AccountKeyType, getPublicKeyFromPrivate } = require("@kaiachain/web3js-ext");
const { Web3 } = require("web3");
// Using senderPriv == senderNewPriv to execute this example repeatedly.
// But you might want to register a different private key.
const senderAddr = "0xe15cd70a41dfb05e7214004d7d054801b2a2f06b";
const senderPriv = "0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8";
const senderNewPriv = "0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8";
async function main() {
  const provider = new Web3.providers.HttpProvider("https://public-en-kairos.node.kaia.io");
  const web3 = new KlaytnWeb3(provider);
  const senderAccount = web3.eth.accounts.privateKeyToAccount(senderPriv);
  const publicKey = getPublicKeyFromPrivate(senderNewPriv);
  console.log({ publicKey });
  const tx = {
    type: TxType.AccountUpdate,
    from: senderAddr,
    key: {
      type: AccountKeyType.Public,
      key: publicKey,
    }
  };
  const signResult = await senderAccount.signTransaction(tx);
  console.log("rawTx", signResult.rawTransaction);
  const receipt = await web3.eth.sendSignedTransaction(signResult.rawTransaction);
  console.log("receipt", receipt);
}
main();

output


❯ js TxTypeAccountUpdate.js
{
  publicKey: '0x03dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cd'
}
signedTx 0xb54dc3c351e9a1f9ce0a120344598482226a5646838d290e46d9704db521cb94
receipt {
  blockHash: '0x8b729b293388e53e397fe00acbd84f449763743180df5dd51725962b540e0bda',
  blockNumber: 148742746n,
  cumulativeGasUsed: 41000n,
  effectiveGasPrice: 25000000000n,
  from: '0xe15cd70a41dfb05e7214004d7d054801b2a2f06b',
  gasUsed: 41000n,
  logs: [],
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  status: 1n,
  to: '0xe15cd70a41dfb05e7214004d7d054801b2a2f06b',
  transactionHash: '0xb54dc3c351e9a1f9ce0a120344598482226a5646838d290e46d9704db521cb94',
  transactionIndex: 0n,
  type: 0n
}