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Merge pull request #1 from QuickMythril/ravencoin

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Added Ravencoin mainnet params
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CalDescent 2022-04-23 14:07:06 +01:00 committed by GitHub
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core/src/main/java/org/libdohj/params/AbstractRavencoinParams.java Normal file
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/*
* Copyright 2013 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Adapted for Ravencoin in April 2022 by Qortal dev team
* Thanks to https://github.com/coinext/ravencoinj for the references
*/
package org.libdohj.params;
import org.bitcoinj.core.*;
import org.bitcoinj.store.BlockStore;
import org.bitcoinj.store.BlockStoreException;
import org.bitcoinj.utils.MonetaryFormat;
import org.libdohj.core.AltcoinNetworkParameters;
import org.libdohj.core.AltcoinSerializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.math.BigInteger;
import static org.bitcoinj.core.Coin.COIN;
/**
* Common parameters for Ravencoin networks.
*/
public abstract class AbstractRavencoinParams extends NetworkParameters implements AltcoinNetworkParameters {
/** Standard format for the RVN denomination. */
public static final MonetaryFormat RVN;
/** Standard format for the mRVN denomination. */
public static final MonetaryFormat MRVN;
/** Standard format for the "Ravenoshi" denomination. */
public static final MonetaryFormat RAVENOSHI;
public static final int RAVEN_TARGET_TIMESPAN = (int)(2016 * 60); // 1.4 days
public static final int RAVEN_TARGET_SPACING = (int)(1 * 60); // 60 seconds
public static final int RAVEN_INTERVAL = TARGET_TIMESPAN / TARGET_SPACING;
/**
* The maximum number of coins to be generated
*/
public static final long MAX_COINS = 21000000; // 21000000000;
/**
* The maximum money to be generated
*/
public static final Coin MAX_RAVENCOIN_MONEY = COIN.multiply(MAX_COINS);
/** Currency code for base 1 Ravencoin. */
public static final String CODE_RVN = "RVN";
/** Currency code for base 1/1,000 Ravencoin. */
public static final String CODE_MRVN = "mRVN";
/** Currency code for base 1/100,000,000 Ravencoin. */
public static final String CODE_RAVENOSHI = "Ravenoshi";
static {
RVN = MonetaryFormat.BTC.noCode()
.code(0, CODE_RVN)
.code(3, CODE_MRVN)
.code(7, CODE_RAVENOSHI);
MRVN = RVN.shift(3).minDecimals(2).optionalDecimals(2);
RAVENOSHI = RVN.shift(7).minDecimals(0).optionalDecimals(2);
}
/** The string returned by getId() for the main, production network where people trade things. */
public static final String ID_RVN_MAINNET = "main";
/** The string returned by getId() for the testnet. */
public static final String ID_RVN_TESTNET = "test";
/** The string returned by getId() for regtest. */
public static final String ID_RVN_REGTEST = "regtest";
public static final int RAVENCOIN_PROTOCOL_VERSION_MINIMUM = 70000;
public static final int RAVENCOIN_PROTOCOL_VERSION_CURRENT = 70001;
private static final Coin BASE_SUBSIDY = Coin.valueOf(5000, 0);
protected Logger log = LoggerFactory.getLogger(AbstractRavencoinParams.class);
public AbstractRavencoinParams() {
super();
interval = RAVEN_INTERVAL;
targetTimespan = RAVEN_TARGET_TIMESPAN;
maxTarget = Utils.decodeCompactBits(0x1e00ffffL);
packetMagic = 0x5241564e;
bip32HeaderP2PKHpub = 0x0488B21E; //The 4 byte header that serializes in base58 to "xpub"
bip32HeaderP2PKHpriv = 0x0488ADE4; //The 4 byte header that serializes in base58 to "xprv"
}
@Override
public Coin getBlockSubsidy(final int height) {
return BASE_SUBSIDY.shiftRight(height / getSubsidyDecreaseBlockCount());
}
/**
* Get the hash to use for a block.
*/
@Override
public Sha256Hash getBlockDifficultyHash(Block block) {
return ((AltcoinBlock) block).getScryptHash();
}
public MonetaryFormat getMonetaryFormat() {
return RVN;
}
@Override
public Coin getMaxMoney() {
return MAX_RAVENCOIN_MONEY;
}
@Override
public Coin getMinNonDustOutput() {
return Coin.valueOf(2730);
}
@Override
public String getUriScheme() {
return "ravencoin";
}
@Override
public boolean hasMaxMoney() {
return true;
}
@Override
public void checkDifficultyTransitions(StoredBlock storedPrev, Block nextBlock, BlockStore blockStore)
throws VerificationException, BlockStoreException {
try {
final long newTargetCompact = calculateNewDifficultyTarget(storedPrev, nextBlock, blockStore);
final long receivedTargetCompact = nextBlock.getDifficultyTarget();
if (newTargetCompact != receivedTargetCompact)
throw new VerificationException("Network provided difficulty bits do not match what was calculated: " +
newTargetCompact + " vs " + receivedTargetCompact);
} catch (CheckpointEncounteredException ex) {
// Just have to take it on trust then
}
}
/**
* Get the difficulty target expected for the next block. This includes all
* the weird cases for Litecoin such as testnet blocks which can be maximum
* difficulty if the block interval is high enough.
* TODO: this may need updating for Ravencoin; it is currently copied from Litecoin
*
* @throws CheckpointEncounteredException if a checkpoint is encountered while
* calculating difficulty target, and therefore no conclusive answer can
* be provided.
*/
public long calculateNewDifficultyTarget(StoredBlock storedPrev, Block nextBlock, BlockStore blockStore)
throws VerificationException, BlockStoreException, CheckpointEncounteredException {
final Block prev = storedPrev.getHeader();
final int previousHeight = storedPrev.getHeight();
final int retargetInterval = this.getInterval();
// Is this supposed to be a difficulty transition point?
if ((storedPrev.getHeight() + 1) % retargetInterval != 0) {
if (this.allowMinDifficultyBlocks()) {
// Special difficulty rule for testnet:
// If the new block's timestamp is more than 5 minutes
// then allow mining of a min-difficulty block.
if (nextBlock.getTimeSeconds() > prev.getTimeSeconds() + getTargetSpacing() * 2) {
return Utils.encodeCompactBits(maxTarget);
} else {
// Return the last non-special-min-difficulty-rules-block
StoredBlock cursor = storedPrev;
while (cursor.getHeight() % retargetInterval != 0
&& cursor.getHeader().getDifficultyTarget() == Utils.encodeCompactBits(this.getMaxTarget())) {
StoredBlock prevCursor = cursor.getPrev(blockStore);
if (prevCursor == null) {
break;
}
cursor = prevCursor;
}
return cursor.getHeader().getDifficultyTarget();
}
}
// No ... so check the difficulty didn't actually change.
return prev.getDifficultyTarget();
}
// We need to find a block far back in the chain. It's OK that this is expensive because it only occurs every
// two weeks after the initial block chain download.
StoredBlock cursor = storedPrev;
int goBack = retargetInterval - 1;
// Litecoin: This fixes an issue where a 51% attack can change difficulty at will.
// Go back the full period unless it's the first retarget after genesis.
// Code based on original by Art Forz
if (cursor.getHeight()+1 != retargetInterval)
goBack = retargetInterval;
for (int i = 0; i < goBack; i++) {
if (cursor == null) {
// This should never happen. If it does, it means we are following an incorrect or busted chain.
throw new VerificationException(
"Difficulty transition point but we did not find a way back to the genesis block.");
}
cursor = blockStore.get(cursor.getHeader().getPrevBlockHash());
}
//We used checkpoints...
if (cursor == null) {
log.debug("Difficulty transition: Hit checkpoint!");
throw new CheckpointEncounteredException();
}
Block blockIntervalAgo = cursor.getHeader();
return this.calculateNewDifficultyTargetInner(previousHeight, prev.getTimeSeconds(),
prev.getDifficultyTarget(), blockIntervalAgo.getTimeSeconds(),
nextBlock.getDifficultyTarget());
}
/**
* Calculate the difficulty target expected for the next block after a normal
* recalculation interval. Does not handle special cases such as testnet blocks
* being setting the target to maximum for blocks after a long interval.
*
* @param previousHeight height of the block immediately before the retarget.
* @param prev the block immediately before the retarget block.
* @param nextBlock the block the retarget happens at.
* @param blockIntervalAgo The last retarget block.
* @return New difficulty target as compact bytes.
*/
protected long calculateNewDifficultyTargetInner(int previousHeight, final Block prev,
final Block nextBlock, final Block blockIntervalAgo) {
return this.calculateNewDifficultyTargetInner(previousHeight, prev.getTimeSeconds(),
prev.getDifficultyTarget(), blockIntervalAgo.getTimeSeconds(),
nextBlock.getDifficultyTarget());
}
/**
*
* @param previousHeight Height of the block immediately previous to the one we're calculating difficulty of.
* @param previousBlockTime Time of the block immediately previous to the one we're calculating difficulty of.
* @param lastDifficultyTarget Compact difficulty target of the last retarget block.
* @param lastRetargetTime Time of the last difficulty retarget.
* @param nextDifficultyTarget The expected difficulty target of the next
* block, used for determining precision of the result.
* @return New difficulty target as compact bytes.
*/
protected long calculateNewDifficultyTargetInner(int previousHeight, long previousBlockTime,
final long lastDifficultyTarget, final long lastRetargetTime,
final long nextDifficultyTarget) {
final int retargetTimespan = this.getTargetTimespan();
int actualTime = (int) (previousBlockTime - lastRetargetTime);
final int minTimespan = retargetTimespan / 4;
final int maxTimespan = retargetTimespan * 4;
actualTime = Math.min(maxTimespan, Math.max(minTimespan, actualTime));
BigInteger newTarget = Utils.decodeCompactBits(lastDifficultyTarget);
newTarget = newTarget.multiply(BigInteger.valueOf(actualTime));
newTarget = newTarget.divide(BigInteger.valueOf(retargetTimespan));
if (newTarget.compareTo(this.getMaxTarget()) > 0) {
log.info("Difficulty hit proof of work limit: {}", newTarget.toString(16));
newTarget = this.getMaxTarget();
}
int accuracyBytes = (int) (nextDifficultyTarget >>> 24) - 3;
// The calculated difficulty is to a higher precision than received, so reduce here.
BigInteger mask = BigInteger.valueOf(0xFFFFFFL).shiftLeft(accuracyBytes * 8);
newTarget = newTarget.and(mask);
return Utils.encodeCompactBits(newTarget);
}
@Override
public AltcoinSerializer getSerializer(boolean parseRetain) {
return new AltcoinSerializer(this, parseRetain);
}
@Override
public int getProtocolVersionNum(final ProtocolVersion version) {
switch (version) {
case PONG:
case BLOOM_FILTER:
return version.getBitcoinProtocolVersion();
case CURRENT:
return RAVENCOIN_PROTOCOL_VERSION_CURRENT;
case MINIMUM:
default:
return RAVENCOIN_PROTOCOL_VERSION_MINIMUM;
}
}
/**
* Whether this network has special rules to enable minimum difficulty blocks
* after a long interval between two blocks (i.e. testnet).
*/
public boolean allowMinDifficultyBlocks() {
return this.isTestNet();
}
public int getTargetSpacing() {
return this.getTargetTimespan() / this.getInterval();
}
private static class CheckpointEncounteredException extends Exception { }
}

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/*
* Copyright 2013 Google Inc.
* Copyright 2014 Andreas Schildbach
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Adapted for Ravencoin in April 2022 by Qortal dev team
* Thanks to https://github.com/coinext/ravencoinj for the references
*/
package org.libdohj.params;
import org.bitcoinj.core.*;
import org.bitcoinj.params.MainNetParams;
import org.bitcoinj.script.Script;
import org.bitcoinj.script.ScriptOpCodes;
import org.bouncycastle.util.encoders.Hex;
import java.io.ByteArrayOutputStream;
import java.util.Arrays;
import static com.google.common.base.Preconditions.checkState;
/**
* Parameters for the Ravencoin main production network on which people trade
* goods and services.
*/
public class RavencoinMainNetParams extends AbstractRavencoinParams {
public static final int MAINNET_MAJORITY_WINDOW = 1000;
public static final int MAINNET_MAJORITY_REJECT_BLOCK_OUTDATED = 950;
public static final int MAINNET_MAJORITY_ENFORCE_BLOCK_UPGRADE = 750;
public RavencoinMainNetParams() {
super();
id = ID_RVN_MAINNET;
// Genesis hash is 0000006b444bc2f2ffe627be9d9e7e7a0730000870ef6eb6da46c8eae389df90
packetMagic = 0x5241564e;
maxTarget = Utils.decodeCompactBits(0x1e00ffffL);
port = 8767;
addressHeader = 60;
p2shHeader = 122;
// from https://github.com/RavenProject/Ravencoin/blob/master/src/chainparams.cpp
/* packetMagic = 0xf9beb4d9;
maxTarget = Utils.decodeCompactBits(0x1d00ffffL);
port = 8333;
addressHeader = 0;
p2shHeader = 5; */
// from https://github.com/coinext/ravencoinj/blob/master/core/src/main/java/org/bitcoinj/params/MainNetParams.java
// acceptableAddressCodes = new int[] { addressHeader, p2shHeader };
dumpedPrivateKeyHeader = 128;
this.genesisBlock = createGenesis(this);
spendableCoinbaseDepth = 100;
subsidyDecreaseBlockCount = 2100000;
String genesisHash = genesisBlock.getHashAsString();
checkState(genesisHash.equals("0000006b444bc2f2ffe627be9d9e7e7a0730000870ef6eb6da46c8eae389df90"));
// from https://github.com/RavenProject/Ravencoin/blob/master/src/chainparams.cpp
// checkState(genesisHash.equals("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
// from https://github.com/coinext/ravencoinj/blob/master/core/src/main/java/org/bitcoinj/params/MainNetParams.java
alertSigningKey = Hex.decode("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f");
majorityEnforceBlockUpgrade = MAINNET_MAJORITY_ENFORCE_BLOCK_UPGRADE;
majorityRejectBlockOutdated = MAINNET_MAJORITY_REJECT_BLOCK_OUTDATED;
majorityWindow = MAINNET_MAJORITY_WINDOW;
dnsSeeds = new String[] {
"seed-raven.bitactivate.com",
"seed-raven.ravencoin.com",
"seed-raven.ravencoin.org"
};
bip32HeaderP2PKHpub = 0x0488b21e; // The 4 byte header that serializes in base58 to "xpub".
bip32HeaderP2PKHpriv = 0x0488ade4; // The 4 byte header that serializes in base58 to "xprv"
}
private static AltcoinBlock createGenesis(NetworkParameters params) {
Transaction t = new Transaction(params);
try {
// A script containing the difficulty bits and the following message:
//
// "The Times 03/Jan/2018 Bitcoin is name of the game for new generation of firms"
byte[] bytes = Utils.HEX.decode("04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73");
t.addInput(new TransactionInput(params, t, bytes));
ByteArrayOutputStream scriptPubKeyBytes = new ByteArrayOutputStream();
Script.writeBytes(scriptPubKeyBytes, Utils.HEX.decode("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"));
scriptPubKeyBytes.write(ScriptOpCodes.OP_CHECKSIG);
t.addOutput(new TransactionOutput(params, t, Coin.valueOf(5000, 0), scriptPubKeyBytes.toByteArray()));
} catch (Exception e) {
// Cannot happen.
throw new RuntimeException(e);
}
Sha256Hash merkleRoot = Sha256Hash.wrap("28ff00a867739a352523808d301f504bc4547699398d70faf2266a8bae5f3516");
AltcoinBlock genesisBlock = new AltcoinBlock(params, Block.BLOCK_VERSION_GENESIS, Sha256Hash.ZERO_HASH,
merkleRoot, 1514999494L, 0x1e00ffffL, 25023712, Arrays.asList(t));
// from https://github.com/RavenProject/Ravencoin/blob/master/src/chainparams.cpp
// merkleRoot, 1231006505L, 0x1d00ffffL, 2083236893, Arrays.asList(t));
// from https://github.com/coinext/ravencoinj/blob/master/core/src/main/java/org/bitcoinj/params/MainNetParams.java
return genesisBlock;
}
private static RavencoinMainNetParams instance;
public static synchronized RavencoinMainNetParams get() {
if (instance == null) {
instance = new RavencoinMainNetParams();
}
return instance;
}
@Override
public String getPaymentProtocolId() {
return ID_RVN_MAINNET;
}
@Override
public boolean isTestNet() {
return false;
}
}