BchainGetAddress.java

Example of recovering blockchain addresses (P2PKH, P2WPKH, and ETH EOA) from an XPrv BIP32 key.

See Note on examples.

package doxy.examples;
 
import com.dinamonetworks.Dinamo;
 
import br.com.trueaccess.TacException;
import br.com.trueaccess.TacNDJavaLib;
 
public class BchainGetAddress {
 
    public static void main(String[] args) throws TacException {
        String ip = "127.0.0.1";
        String user = "master";
        String password = "12345678";
 
        Dinamo api = new Dinamo();
 
        api.openSession(ip, user, password);
 
        String xprvId = "xprv_addr_example";
 
        // Cria uma chave XPrv BIP32 (mainnet)
        api.bchainCreateXPrv(TacNDJavaLib.DN_BCHAIN_BIP32_XPRV,
                             TacNDJavaLib.DN_BCHAIN_VER_BIP32_MAINNET,
                             0,
                             xprvId);
        System.out.println("Chave XPrv criada: " + xprvId);
 
        // Recupera o endereço P2PKH (Bitcoin mainnet)
        byte[] addrP2PKH = api.bchainGetAddress(TacNDJavaLib.DN_BCHAIN_AT_BTC_P2PKH,
                                                TacNDJavaLib.DN_BCHAIN_VER_BTC_A1_MAIN_NET,
                                                TacNDJavaLib.DN_BCHAIN_HRP_UNUSED,
                                                xprvId);
        System.out.println("Endereço P2PKH: " + new String(addrP2PKH));
 
        // Recupera o endereço P2WPKH (Bitcoin mainnet, SegWit bech32)
        byte[] addrP2WPKH = api.bchainGetAddress(TacNDJavaLib.DN_BCHAIN_AT_BTC_P2WPKH,
                                                 TacNDJavaLib.DN_BCHAIN_VER_BTC_B32_WITVER,
                                                 TacNDJavaLib.DN_BCHAIN_HRP_BTC_MAIN_NET,
                                                 xprvId);
        System.out.println("Endereço P2WPKH: " + new String(addrP2WPKH));
 
        // Recupera o endereço ETH EOA
        byte[] addrEth = api.bchainGetAddress(TacNDJavaLib.DN_BCHAIN_AT_ETH_EOA,
                                              TacNDJavaLib.DN_BCHAIN_VER_UNUSED,
                                              TacNDJavaLib.DN_BCHAIN_HRP_UNUSED,
                                              xprvId);
        System.out.println("Endereço ETH EOA: " + new String(addrEth));
 
        // Remove a chave criada
        api.deleteKeyIfExists(xprvId);
        System.out.println("Chave XPrv removida: " + xprvId);
 
        api.closeSession();
    }
}