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index.html
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>fractal -UniSat钱包 批量 拆分/归集 UTXO 工具</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #f0f0f5;
color: #333;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
.container {
background-color: #fff;
border-radius: 8px;
padding: 20px;
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
text-align: center;
width: 600px;
}
h2 {
color: #4a90e2;
}
label {
font-weight: bold;
margin-top: 10px;
display: block;
}
input[type="text"], textarea {
width: 90%;
padding: 10px;
margin: 10px 0;
border: 1px solid #ddd;
border-radius: 4px;
}
button {
background-color: #4a90e2;
color: white;
padding: 10px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
margin-top: 10px;
}
button:hover {
background-color: #357ab8;
}
select {
padding: 10px;
border-radius: 4px;
}
p {
font-style: italic;
}
</style>
</head>
<body>
<div class="container">
<h2>Fractal - UniSat钱包 拆分 UTXO 工具</h2>
<!-- 连接钱包按钮 -->
<button id="connectWallet">连接 UniSat 钱包</button>
<p id="walletAddress"></p>
<!-- 输入批量拆分信息 -->
<label for="recipients">接收地址 (一行一个地址):</label>
<textarea id="recipients" placeholder="每行一个接收地址" rows="6"></textarea>
<label for="amount">每个地址的金额 (FB):</label>
<input type="text" id="amount" placeholder="输入金额">
<label for="gasfee">gas费:</label>
<input type="text" id="gasfee" placeholder="输入gas">
<button id="splitUtxo">拆分 UTXO 并发送</button>
</div>
<script src="https://cdn.jsdelivr.net/npm/jquery/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@zhigang1992/[email protected]/bitcoinjs.min.js"></script>
<script src="https://unisat.io/api/unisat.js"></script>
<script src="https://mempool.space/mempool.js"></script>
<script type="module">
import { Buffer } from 'https://cdn.jsdelivr.net/npm/[email protected]/+esm';
let walletAddress = '';
let confirmedBalance = 0;
let inputUtxo = [];
async function getFilteredUTXOs(btcaddress) {
try {
const response = await fetch("https://mempool.fractalbitcoin.io/api/address/" + btcaddress + "/utxo");
const data = await response.json();
// Sort by value in descending order
const sortedData = data.sort((a, b) => b.value - a.value);
// Filter out UTXOs with value less than 10000
const filteredData = sortedData.filter(utxo => utxo.value > 10000);
return filteredData ? filteredData[0] : [];
} catch (error) {
console.error('Error:', error);
return [];
}
}
// 连接 UniSat 钱包
document.getElementById('connectWallet').addEventListener('click', async () => {
try {
walletAddress = await window.unisat.requestAccounts();
document.getElementById('walletAddress').innerText = `钱包地址: ${walletAddress[0]}`;
$('#connectWallet').text("点击切换钱包");
unisat.getBalance().then(balance => {
confirmedBalance = balance.confirmed;
});
inputUtxo = await getFilteredUTXOs(walletAddress[0]);
} catch (err) {
console.error("钱包连接失败:", err);
}
});
// 拆分
document.getElementById('splitUtxo').addEventListener('click', async () => {
if (!inputUtxo) {
alert("没有可用余额");
return;
}
const recipientList = document.getElementById('recipients').value.trim().split("\n");
const amountStr = document.getElementById('amount').value.trim(); // 获取金额字符串
const gasfee = document.getElementById('gasfee').value.trim();
// 验证用户输入是否有效
if (recipientList.length === 0 || isNaN(amountStr) || parseFloat(amountStr) <= 0 || parseFloat(gasfee) <= 0) {
alert("请输入有效的接收地址，金额,脚本公钥或者Gas费有误");
return;
}
const amount = Math.round(parseFloat(amountStr) * 1e8); // 转换为聪并四舍五入
// 构建输出列表
const outputs = recipientList.map(address => ({
address: address.trim(),
value: amount
}));
try {
const psbt = new bitcoinjs.Psbt();
//添加所有 UTXO 作为输入
psbt.addInput({
hash: inputUtxo.txid,
index: inputUtxo.vout,
sequence: 0xFFFFFFFD, // 启用 RBF
witnessUtxo: {
script: Buffer.from(bitcoinjs.address.toOutputScript(walletAddress[0]).toString('hex'), 'hex'), //脚本公钥，在https://mempool.fractalbitcoin.io网站找
value: inputUtxo.value
}
});
const inputSizeP2TR = 57; // P2TR 输入大小
const outputSizeP2TR = 43; // P2TR 输出大小
const baseTransactionSize = 10; // 固定开销
let outUtxoNum = recipientList.length + 1;
const transactionSize = baseTransactionSize + (inputSizeP2TR) + (outputSizeP2TR * (outUtxoNum));
// 计算矿工费
const transactionFee = transactionSize * gasfee;
const ts_self = inputUtxo.value - transactionFee - (recipientList.length * amount);
if (ts_self < 0) {
alert("每个地址最大可转：" + Math.floor((inputUtxo.value - transactionFee) / (recipientList.length + 1)) / 1e8 );
return;
}
//计算剩余转给自己
if (ts_self >= 0) {
psbt.addOutput({
address: walletAddress[0], // 接收方地址
value: ts_self, // 输出金额（聪）
});
}
//逐个添加输出，添加调试信息
outputs.forEach((output, index) => {
psbt.addOutput({
address: output.address, // 接收方地址
value: output.value, // 输出金额（聪）
});
});
// 将 PSBT 转换为 Base64 格式
const psbtBase64 = psbt.toBase64();
// 将 PSBT 转换为 Hex
const psbtHex = Buffer.from(psbtBase64, 'base64').toString('hex');
//签名
const signedPsbtHex = await window.unisat.signPsbt(psbtHex);
//广播交易
let res = await window.unisat.pushPsbt(signedPsbtHex);
alert("成功");
} catch (err) {
console.error("失败:", err);
}
});
</script>
</body>
</html>