This is an example application of how to build a Bitcoin mining application using the Dart language. I also recommend only using this application using the TestNet within Bitcoin so that you do not risk of hitting the live network with sample code.
On my machine, I was able to hit hash rate of about 500kH/s, which turns out to be about a 15x speed improvement on a JavaScript implementation... While this is impressive, here's hoping that the Dash VM improves in performance with future releases.
Below is the steps necessary to get this to work.
- Install the Dart SDK and Editor by going to http://dartlang.org.
- Install the Bitcoin-Qt client by going to https://bitcoin.org/en/download
- Ensure that you run Bitcoin-Qt in testnet mode by following the guide http://suffix.be/blog/getting-started-bitcoin-testnet
- Add this project to your library and then use the following code to mine bitcoins.
import 'package:dartminer/dartminer.dart';
// Our main entry point.
void main() {
// Create a bitcoin client with the proper configuration.
Bitcoin bitcoin = new Bitcoin({
"scheme": "http",
"host": "127.0.0.1",
"port": 18332,
"user": "bitcoinrpc",
"pass": "123123123123"
}, new RPCRequest());
// Get work from the bitcoind.
bitcoin.getwork().then((Map<String, String> work) {
// Work.
print(work);
// Create the miner.
Miner miner = new Miner.fromJSON(work);
// Mine for gold!
Map<String, String> result = miner.mine();
// If the result isn't null, then
if (result != null) {
print('Gold!');
print(result);
bitcoin.getwork(params: [result['data']]);
}
});
}// Import the dartminer package.
import 'package:dartminer/dartminer.dart';
// Our main file
void main() {
// Create a bitcoin client with the proper configuration.
Bitcoin bitcoin = new Bitcoin({
"scheme": "http",
"host": "127.0.0.1",
"port": 18332,
"user": "bitcoinrpc",
"pass": "123123123123123"
}, new RPCRequest());
// Get work from the bitcoind.
bitcoin.getblocktemplate().then((dynamic tpl) {
// Create the new template.
Template template = new Template.fromJSON(tpl, address: '1N438cAaGjY9cyZ5J5hgvixkch3hiu6XA1');
// Mine for gold.
Map<String, String> result = template.mine();
// See if there is a result.
if (result != null) {
// We found gold!
print('GOLD!');
// Print the result.
print(result);
// Submit the block.
bitcoin.submitblock(params: [result['data']]);
}
});
}Donations Welcome: 1N438cAaGjY9cyZ5J5hgvixkch3hiu6XA1
Enjoy...