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index.html
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<html>
<head>
<title>txbuilder</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
</head>
<script src='bitcoinjs.min.js'></script>
<script type="text/javascript">
var network = { hashGenesisBlock: 'ff9f1c0116d19de7c9963845e129f9ed1bfc0b376eb54fd7afa42e0d418c8bb6',
port: 9401,
portRpc: 9402,
protocol: { magic: 3686187259 },
seedsDns: [ 'dnsseed.monacoin.org' ],
versions:
{ bip32: { private: 76066276, public: 76067358 },
bip44: 22,
private: 178,
public: 50,
scripthash: 55,
scripthash2: 5 },
name: 'Monacoin',
unit: 'MONA',
testnet: false,
messagePrefix: '',
bip32: { public: 76067358, private: 76066276 },
pubKeyHash: 50,
scriptHash: 55,
wif: 178,
dustThreshold: null }
var MONAPA_ADDRESS = "MMonapartyMMMMMMMMMMMMMMMMMMMUzGgh";
function gettx() {
var txid = document.getElementById('txid').value;
fetch("https://mona.chainsight.info/api/tx/"+txid).then(function(response){
if(response.ok === false){
throw new Error("トランザクションがない")
}
return response.json();
}).then(function(json) {
if(json.confirmations){
throw new Error("コンファーム済みです");
}
var obj = {
}
obj.address = '';
obj.txid = json.txid;
for(var i = 0; i<json.vout.length; ++i){
var vout = json.vout[i]
if(vout.scriptPubKey.addresses.includes(MONAPA_ADDRESS)){
continue;
}
obj.vout = vout.n;
obj.address = vout.scriptPubKey.addresses.shift();
obj.amount = vout.value;
break;
}
var txsize = json.size + 226;
var fee = txsize * 200;
obj.fee = (fee * 1e-8).toFixed(8)
var satoshis = parseFloat(vout.value) * 1e8
obj.sendamount = (Math.floor(satoshis - fee) * 1e-8).toFixed(8)
return obj
}).then(function(obj){
console.log(obj)
document.getElementById('org_amount').innerText = "金額：" + obj.amount
document.getElementById('fee').innerText = "手数料：" + parseFloat(obj.fee)
document.getElementById('vout').value = obj.vout
document.getElementById('amount').value = obj.sendamount
document.getElementById('address').value = obj.address
}).catch(function(e){
document.getElementById('message').innerText = e.message
})
}
function convert() {
try {
var address = document.getElementById('address').value;
var txid = document.getElementById('txid').value;
var vout = parseInt(document.getElementById('vout').value);
var wif = document.getElementById('wif').value;
var amount = parseFloat(document.getElementById('amount').value);
var keypair = bitcoin.ECPair.fromWIF(wif, network);
console.log(keypair.getAddress());
var tx = new bitcoin.TransactionBuilder(network)
tx.addInput(txid, vout)
tx.addOutput(address, Math.floor(amount * 1e8))
tx.sign(0, keypair)
var rawtx = tx.build().toHex()
document.getElementById('output').value = rawtx;
document.getElementById('message').innerText = "https://mona.insight.monaco-ex.org/insight/tx/send"
} catch(err) {
var message = "error: " + err.message
document.getElementById('message').innerText = message
}
}
</script>
<div class="container">
<nav class="navbar navbar-default">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<a class="navbar-brand" href="#">txbuilder</a>
</div>
</nav>
<div class="form-group row">
<div class="col-md-4">
<label for="txid">トランザクションID:</label>
<input class="form-control" id="txid" size="40" value=""/>
<label id="fee"></label>
<label id="org_amount"></label>
</div>
<div class="col-md-12">
<button class="btn btn-primary" type="button" onclick="gettx();" style="margin-top: 4px">gettx</button>
</div>
<div class="col-md-4">
<label for="vout">トランザクションVOUT:</label>
<input class="form-control" id="vout" size="5" value=""/>
<label for="amount">送金額:</label>
<input class="form-control" id="amount" size="5" value=""/>
<label for="address">送金先アドレス:</label>
<input class="form-control" id="address" size="40" value=""/>
<label for="vout">秘密鍵:</label>
<input class="form-control" id="wif" size="40" value=""/>
</div>
<div class="col-md-12">
<button class="btn btn-primary" type="button" onclick="convert();" style="margin-top: 4px">Convert</button>
</div>
</div>
<label id="message"></label>
<textarea id="output" cols="100" rows="5"></textarea>
</div>
</html>