Blockchain By Example

Bitcoin wallet configuration

In the first line of our code, we activate BitcoinJ's logging using a Java logging formatter that writes more compact output than the default:

BriefLogFormatter.init();

Then we indicate which bitcoin network we want to use. In this scenario, we choose testnet, as our Node.js server is already running on the testnet network by default:

final static NetworkParameters params = TestNet3Params.get();

The other available options are MainNetParams and RegTestParams.

Next, we start by initializing (inside the main function) a WalletAppKit object, to create a lightweight SPV (short for Simplified Payment Verification) BitcoinJ wallet. As mentioned in the BitcoinJ documentation, the WalletAppKit class wraps the boilerplate ...