Iancoleman Example

IancolemanExample.java

import com.google.common.collect.ImmutableList;
import java.util.Date;
import org.bitcoinj.core.NetworkParameters;
import org.bitcoinj.params.TestNet3Params;
import org.bitcoinj.crypto.ChildNumber;
import org.bitcoinj.crypto.DeterministicKey;
import org.bitcoinj.wallet.DeterministicKeyChain;
import org.bitcoinj.wallet.DeterministicSeed;
import org.bitcoinj.wallet.Wallet;

public class IancolemanExample {

    public static void main(String[] args) throws Exception {
        System.out.println("IancolemanExample");
        final NetworkParameters params = TestNet3Params.get();
        String mnemonic = "brisk wood symptom party betray ozone dad super beyond sea memory power pig business extra";

        // mnemonic seed
        DeterministicSeed seed = new DeterministicSeed(mnemonic, null, "", new Date().getTime());
        // new wallet with mnemonic seed
        Wallet wallet = Wallet.fromSeed(params, seed);
        System.out.println(wallet);
        DeterministicKeyChain keyChain = DeterministicKeyChain.builder().seed(seed).build();
        // Derive 100 children 
        keyChain.maybeLookAhead();

        int i = 0;
        while (i < 100) {

            DeterministicKey key5 = keyChain.getKeyByPath(ImmutableList.of(ChildNumber.ZERO_HARDENED, ChildNumber.ZERO, new ChildNumber(i)), false);
            System.out.print(key5.getPathAsString()  + " ");
            System.out.print(key5.toAddress(params).toString() + " ");
            System.out.print(key5.getPublicKeyAsHex() + " ");
            System.out.print(key5.getPrivateKeyAsWiF(params));
            System.out.print("\n");
            i++;
        }

    }
}

public static void main(String[] args) {
	// obscure loan stove case penalty coyote easy fluid employ patrol peanut during
	// embrace now coast
	NetworkParameters params = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);

	String xPub = "xpub6CLGfh7bEzvPxdivQD7RxSXJgk7wGQCSosWSrsiDr2jVimmoHwYU3yTKYEdraX82WHHVcJjk8L7ptb9NCb5bs2XrrnWsLeyr5FscqFqXJct";

	Wallet wallet = Wallet.fromWatchingKeyB58(params, xPub, DeterministicHierarchy.BIP32_STANDARDISATION_TIME_SECS);

	System.out.println("Receiving Address : " + wallet.currentReceiveAddress());

	for (int i = 0; i < 10; i++) {
		System.out.println(i + " : " + wallet.freshReceiveAddress());
	}

}