Account Update

導入 web3 和 @kaiachain/web3js-ext 軟件包，在 web3 上添加 kaia 功能

定義要更改的發件人地址、發件人私人密鑰和新私人密鑰

定義繳費人地址和私人密鑰

使用指定的 kairos 測試網 URL 設置提供程序。 web3 中的提供者是訪問區塊鏈數據的只讀抽象。

此外，您還可以將提供商 URL 從 kairos 更改為 quicknode

使用 "web3.eth.accounts.privateKeyToAccount "創建帶有私鑰的發件人錢包

使用 "web3.eth.accounts.privateKeyToAccount "用私鑰創建付費者錢包

使用getPublicKeyFromPrivate從新私鑰生成公鑰

創建具有 `type：TxType.FeeDelegatedAccountUpdate "和 "key "包含新公鑰的交易對象

用發送方賬戶簽署交易

使用 "signTransactionAsFeePayer"，使用付費者賬戶簽署交易

使用 web3.eth.sendSignedTransaction 將簽名交易發送到區塊鏈。 它將返回交易收據

TxTypeFeeDelegatedAccountUpdate.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 = "0x30908464d76604420162a6c880c0e1c7e641bad7";

const senderPriv = "0xf8cc7c3813ad23817466b1802ee805ee417001fcce9376ab8728c92dd8ea0a6b";

const senderNewPriv = "0xf8cc7c3813ad23817466b1802ee805ee417001fcce9376ab8728c92dd8ea0a6b";

const feePayerAddr = "0xcb0eb737dfda52756495a5e08a9b37aab3b271da";

const feePayerPriv = "0x9435261ed483b6efa3886d6ad9f64c12078a0e28d8d80715c773e16fc000cff4";

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);

const feePayerAccount = web3.eth.accounts.privateKeyToAccount(feePayerPriv);

async function main() {

const publicKey = getPublicKeyFromPrivate(senderNewPriv);

console.log({ publicKey });

const tx = {

type: TxType.FeeDelegatedAccountUpdate,

from: senderAddr,

key: {

type: AccountKeyType.Public,

key: publicKey

},

};

// Sign transaction by sender

const signResult1 = await senderAccount.signTransaction(tx);

console.log("senderTxHashRLP", signResult1.rawTransaction);

// Sign and send transaction by fee payer

const signResult2 = await feePayerAccount.signTransactionAsFeePayer(signResult1.rawTransaction);

console.log("signedTx", signResult2.transactionHash);

const receipt = await web3.eth.sendSignedTransaction(signResult2.rawTransaction);

console.log("receipt", receipt);

}

main();

output

❯ js TxTypeFeeDelegatedAccountUpdate.js

{

publicKey: '0x02dbac81e8486d68eac4e6ef9db617f7fbd79a04a3b323c982a09cdfc61f0ae0e8'

}

senderTxHashRLP 0x21f88d0c850ba43b7400830205949430908464d76604420162a6c880c0e1c7e641bad7a302a102dbac81e8486d68eac4e6ef9db617f7fbd79a04a3b323c982a09cdfc61f0ae0e8f847f8458207f6a06aa4e32d36dd96da8cb0f2404d81302d855defbaabf4fdbf176aabf415179564a02161361ff91f14ebccc265c55c6dff8f4fbba4b467da07c1283d8e5991051cb0

signedTx 0xbf72aae23989ca58eabfca9bd84b1ad9d60354e22b55102f5f5d4af18725a58e

receipt {

blockHash: '0x8d14709da1890fcefa545bdc4f4bccacbed948d799db2c34c9eb87deeb3b1e08',

blockNumber: 148744920n,

cumulativeGasUsed: 429478n,

effectiveGasPrice: 25000000000n,

from: '0x30908464d76604420162a6c880c0e1c7e641bad7',

gasUsed: 51000n,

logs: [],

logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',

status: 1n,

to: '0x30908464d76604420162a6c880c0e1c7e641bad7',

transactionHash: '0xbf72aae23989ca58eabfca9bd84b1ad9d60354e22b55102f5f5d4af18725a58e',

transactionIndex: 2n,

type: 0n

}