Download or build the WebAssembly binary and wasm_exec.js file.
Here's a simple single-thread for you to get started:
<html>
<head>
<script src="wasm_exec.js"></script>
<script>
const go = new Go();
WebAssembly.instantiateStreaming(fetch('main.wasm'), go.importObject).then((result) => {
go.run(result.instance);
});
</script>
</head>
<body>
<p>Contract Address</p>
<input id="contract_address" type="text"/>
<p>Sender Address</p>
<input id="sender_address" type="text"/>
<p>Difficulty</p>
<input id="difficulty" type="number"/>
<button onclick="mine()">Mine</button>
<script>
function mine() {
const contractAddress = document.getElementById('contract_address').value;
const senderAddress = document.getElementById('sender_address').value;
const difficulty = document.getElementById('difficulty').value;
let nonce = null;
while(nonce === null) {
nonce = calcBulk(contractAddress, senderAddress, difficulty, 100000); // 100000 stands for the number of hashes to calculate each time
}
alert('Found a valid nonce: ' + nonce); // nonce is a decimal string
}
</script>
</body>
</html>It's recommended to use Web Workers for multi-threading. An example will be provided soon.
Make sure you have installed Golang.
The following steps assume that you are using Linux.
git clone https://github.com/X-Proto/wasm-miner
cd wasm-miner
bash build.sh
ls output # calc.wasm wasm_exec.jsLicensed under the MIT License.