Hi all,
I'm trying to build an alt client for android and although I believe I have most parameters up and running , i'm getting the following error:
The parameters i'm using
package org.litecoin;
import com.google.bitcoin.core.*;
import com.google.bitcoin.script.Script;
import com.google.bitcoin.script.ScriptOpCodes;
import com.lambdaworks.crypto.SCrypt;
import org.spongycastle.util.encoders.Hex;
import java.io.ByteArrayOutputStream;
import java.math.BigInteger;
import java.security.GeneralSecurityException;
import static com.google.common.base.Preconditions.checkState;
/**
* Parameters for the testnet, a separate public instance of Bitcoin that has relaxed rules suitable for development
* and testing of applications and new Bitcoin versions.
*/
public class LitecoinParams extends NetworkParameters {
public LitecoinParams() {
super();
id = "org.litecoin.production";
proofOfWorkLimit = Utils.decodeCompactBits(0x1e0fffffL);
addressHeader = 15;
acceptableAddressCodes = new int[] { 48 };
port = 12622;
packetMagic = 0xfbc0b6dbL;
dumpedPrivateKeyHeader = 128 + addressHeader;
targetTimespan = (int)(6 * 8 * 60);
interval = targetTimespan/((int)(2 * 60));
genesisBlock.setDifficultyTarget(0x1e0ffff0L);
genesisBlock.setTime(1394208197L);
genesisBlock.setNonce(2085670015);
genesisBlock.removeTransaction(0);
Transaction t = new Transaction(this);
try {
// A script containing the difficulty bits and the following message:
//
// "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"
byte[] bytes = Hex.decode
("0497269736820756e69766572736974696573206661696c20746f206d616b65206c697374206f6620746f702031303020696e737469747574696f6e73");
t.addInput(new TransactionInput(this, t, bytes));
ByteArrayOutputStream scriptPubKeyBytes = new ByteArrayOutputStream();
Script.writeBytes(scriptPubKeyBytes, Hex.decode
("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9"));
scriptPubKeyBytes.write(ScriptOpCodes.OP_CHECKSIG);
t.addOutput(new TransactionOutput(this, t, Utils.toNanoCoins(50, 0), scriptPubKeyBytes.toByteArray()));
} catch (Exception e) {
// Cannot happen.
throw new RuntimeException(e);
}
genesisBlock.addTransaction(t);
String genesisHash = genesisBlock.getHashAsString();
checkState(genesisHash.equals("3831a2c571523657ea6886293559c8751a9e8bc195a9f437febbb3df56bc55a1"),
genesisBlock);
subsidyDecreaseBlockCount = 450000;
dnsSeeds = new String[] {
"seed.gaelcoin.org",
"pool.gaelcoin.org",
};
}
private static BigInteger MAX_MONEY = Utils.COIN.multiply(BigInteger.valueOf(640000000));
@Override
public BigInteger getMaxMoney() { return MAX_MONEY; }
private static LitecoinParams instance;
public static synchronized LitecoinParams get() {
if (instance == null) {
instance = new LitecoinParams();
}
return instance;
}
/** The number of previous blocks to look at when calculating the next Block's difficulty */
@Override
public int getRetargetBlockCount(StoredBlock cursor) {
if (cursor.getHeight() + 1 != getInterval()) {
//Logger.getLogger("wallet_ltc").info("Normal LTC retarget");
return getInterval();
} else {
//Logger.getLogger("wallet_ltc").info("Genesis LTC retarget");
return getInterval() - 1;
}
}
@Override public String getURIScheme() { return "litecoin:"; }
/** Gets the hash of the given block for the purpose of checking its PoW */
public Sha256Hash calculateBlockPoWHash(Block b) {
byte[] blockHeader = b.cloneAsHeader().bitcoinSerialize();
try {
return new Sha256Hash(Utils.reverseBytes(SCrypt.scrypt(blockHeader, blockHeader, 1024, 1, 1, 32)));
} catch (GeneralSecurityException e) {
throw new RuntimeException(e);
}
}
static {
NetworkParameters.registerParams(get());
NetworkParameters.PROTOCOL_VERSION = 70002;
}
}
04-26 21:41:03.930 25015-25015/de.schildbach.wallet_ltc E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: de.schildbach.wallet_ltc, PID: 25015
java.lang.ExceptionInInitializerError
at de.schildbach.wallet.Constants.<clinit>(Constants.java:42)
at de.schildbach.wallet.WalletApplication.initLogging(WalletApplication.java:174)
at de.schildbach.wallet.WalletApplication.onCreate(WalletApplication.java:109)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java)
at android.app.ActivityThread.access$1500(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java)
at android.os.Handler.dispatchMessage(Handler.java)
at android.os.Looper.loop(Looper.java)
at android.app.ActivityThread.main(ActivityThread.java)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: v1 block:
previous block: 0000000000000000000000000000000000000000000000000000000000000000
merkle root: 97ddfbbae6be97fd6cdf3e7ca13232a3afff2353e29badfab7f73011edd4ced9
time: [1394208197] Fri Mar 07 16:03:17 GMT+00:00 2014
difficulty target (nBits): 504365040
nonce: 2085670015
with 1 transaction(s):
97ddfbbae6be97fd6cdf3e7ca13232a3afff2353e29badfab7f73011edd4ced9: Unknown confidence level.
== COINBASE TXN (scriptSig [ffff001d] [04] [4e592054696d65732030352f4f63742f32303131205374657665204a6f62732c204170706c65e280997320566973696f6e6172792c2044696573206174203536]) (scriptPubKey [040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9] CHECKSIG)
at com.google.common.base.Preconditions.checkState(Preconditions.java:149)
at org.litecoin.LitecoinParams.<init>(LitecoinParams.java:72)
at org.litecoin.LitecoinParams.get(LitecoinParams.java:91)
at org.litecoin.LitecoinParams.<clinit>(LitecoinParams.java:121)
... 15 more
Any idea what i'm missing here?
