To get started, ensure you have the latest JDK installed and then just run "ant". - A JAR will be placed in dist/ - JavaDocs will be placed in docs/ - Unit tests will be run Now ensure you're running a BitCoin node locally and run the example app: cd out java com.google.bitcoin.examples.PingService It will print a BitCoin address. If you send coins to it, you should get them back a few minutes later when a block is solved.