diff --git a/core/src/main/java/org/libdohj/params/AbstractPirateChainParams.java b/core/src/main/java/org/libdohj/params/AbstractPirateChainParams.java new file mode 100644 index 00000000..f7b4321e --- /dev/null +++ b/core/src/main/java/org/libdohj/params/AbstractPirateChainParams.java @@ -0,0 +1,318 @@ +/* + * 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 Pirate Chain in May 2022 by Qortal dev team + */ + +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 Litecoin networks. + */ +public abstract class AbstractPirateChainParams extends NetworkParameters implements AltcoinNetworkParameters { + /** Standard format for the PIRATE denomination. */ + public static final MonetaryFormat PIRATE; + /** Standard format for the mPIRATE denomination. */ + public static final MonetaryFormat MPIRATE; + /** Standard format for the BITS denomination. */ + public static final MonetaryFormat BITS; + + public static final int ARRR_TARGET_TIMESPAN = (int) (3.5 * 24 * 60 * 60); // 3.5 days // TODO + public static final int ARRR_TARGET_SPACING = (int) (1 * 60); // 1 minute + public static final int ARRR_INTERVAL = ARRR_TARGET_TIMESPAN / ARRR_TARGET_SPACING; + + /** + * The maximum number of coins to be generated + */ + public static final long MAX_ARRR = 200000000; + + /** + * The maximum money to be generated + */ + public static final Coin MAX_ARRR_MONEY = COIN.multiply(MAX_ARRR); + + /** Currency code for base 1 Litecoin. */ + public static final String CODE_PIRATE = "PIRATE"; + /** Currency code for base 1/1,000 Litecoin. */ + public static final String CODE_MPIRATE = "mPIRATE"; + /** Currency code for base 1/100,000,000 Litecoin. */ + public static final String CODE_BITS = "bits"; + + static { + PIRATE = MonetaryFormat.BTC.noCode() + .code(0, CODE_PIRATE) + .code(3, CODE_MPIRATE) + .code(7, CODE_BITS); + MPIRATE = PIRATE.shift(3).minDecimals(2).optionalDecimals(2); + BITS = PIRATE.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_ARRR_MAINNET = "main"; + /** The string returned by getId() for the testnet. */ + public static final String ID_ARRR_TESTNET = "test"; + /** The string returned by getId() for regtest. */ + public static final String ID_ARRR_REGTEST = "regtest"; + + public static final int PIRATE_PROTOCOL_VERSION_MINIMUM = 70002; + public static final int PIRATE_PROTOCOL_VERSION_CURRENT = 70003; + + private static final Coin BASE_SUBSIDY = COIN.multiply(256); + + protected Logger log = LoggerFactory.getLogger(AbstractPirateChainParams.class); + + public AbstractPirateChainParams() { + super(); + interval = ARRR_INTERVAL; + targetTimespan = ARRR_TARGET_TIMESPAN; + maxTarget = Utils.decodeCompactBits(0x1f07ffffL); + + packetMagic = 0xf9beb4d9; + 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 PIRATE; + } + + @Override + public Coin getMaxMoney() { + return MAX_ARRR_MONEY; + } + + @Override + public Coin getMinNonDustOutput() { + return Coin.valueOf(100000); + } + + @Override + public String getUriScheme() { + return "pirate"; + } + + @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. + * + * @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 PIRATE_PROTOCOL_VERSION_CURRENT; + case MINIMUM: + default: + return PIRATE_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 { } +} diff --git a/core/src/main/java/org/libdohj/params/PirateChainMainNetParams.java b/core/src/main/java/org/libdohj/params/PirateChainMainNetParams.java new file mode 100644 index 00000000..e7d2d7a8 --- /dev/null +++ b/core/src/main/java/org/libdohj/params/PirateChainMainNetParams.java @@ -0,0 +1,126 @@ +/* + * 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 Pirate Chain in May 2022 by Qortal dev team + */ + +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 static org.bitcoinj.core.Coin.COIN; + +/** + * Parameters for the Pirate Chain main production network on which people trade + * goods and services. + * Note: these are incomplete and can only be used for limited use cases + */ +public class PirateChainMainNetParams extends AbstractPirateChainParams { + public static final int MAINNET_MAJORITY_WINDOW = MainNetParams.MAINNET_MAJORITY_WINDOW; + public static final int MAINNET_MAJORITY_REJECT_BLOCK_OUTDATED = MainNetParams.MAINNET_MAJORITY_REJECT_BLOCK_OUTDATED; + public static final int MAINNET_MAJORITY_ENFORCE_BLOCK_UPGRADE = MainNetParams.MAINNET_MAJORITY_ENFORCE_BLOCK_UPGRADE; + + public PirateChainMainNetParams() { + super(); + id = ID_ARRR_MAINNET; + // Genesis hex is 0x027e3758c3a65b12aa1046462b486d0a63bfa1beae327897f56c5cfb7daaae71 + packetMagic = 0xf9beb4d9; + + maxTarget = Utils.decodeCompactBits(0x200f0f0fL); + port = 7770; + addressHeader = 60; + p2shHeader = 85; + segwitAddressHrp = "zs"; + // acceptableAddressCodes = new int[] { addressHeader, p2shHeader }; + dumpedPrivateKeyHeader = 188; + + this.genesisBlock = createGenesis(this); + spendableCoinbaseDepth = 100; + subsidyDecreaseBlockCount = 210000; + + String genesisHash = genesisBlock.getHashAsString(); + // TODO: The genesis hash currently does not match, so checking has temporarily been disabled. This will need fixing before the complete implementation can be used. + //checkState(genesisHash.equals("")); // TODO: 0x027e3758c3a65b12aa1046462b486d0a63bfa1beae327897f56c5cfb7daaae71 + alertSigningKey = Hex.decode("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"); + + majorityEnforceBlockUpgrade = MAINNET_MAJORITY_ENFORCE_BLOCK_UPGRADE; + majorityRejectBlockOutdated = MAINNET_MAJORITY_REJECT_BLOCK_OUTDATED; + majorityWindow = MAINNET_MAJORITY_WINDOW; + + dnsSeeds = new String[] { + "pirate1.cryptoforge.cc", // Forge + "pirate2.cryptoforge.cc", // Forge + "pirate3.cryptoforge.cc", // Forge + "explorer.cryptoforge.cc", // Forge + "explorer.pirate.black", // Explorer + "mseed.dexstats.info", // Dexstats chmex + "seed.komodostats.com", // komodostats webworker01 + "bootstrap.arrr.black" // geo optimized routing enabled chmex + }; + bip32HeaderP2PKHpub = 0x0488B21E; + bip32HeaderP2PKHpriv = 0x0488ADE4; + } + + private static AltcoinBlock createGenesis(NetworkParameters params) { + AltcoinBlock genesisBlock = new AltcoinBlock(params, 4L); + Transaction t = new Transaction(params); + try { + byte[] bytes = Hex.decode + ("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"); + t.addInput(new TransactionInput(params, t, bytes)); + ByteArrayOutputStream scriptPubKeyBytes = new ByteArrayOutputStream(); + Script.writeBytes(scriptPubKeyBytes, Hex.decode + ("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f")); + scriptPubKeyBytes.write(ScriptOpCodes.OP_CHECKSIG); + t.addOutput(new TransactionOutput(params, t, COIN.multiply(50), scriptPubKeyBytes.toByteArray())); + } catch (Exception e) { + // Cannot happen. + throw new RuntimeException(e); + } + genesisBlock.addTransaction(t); + genesisBlock.setTime(1231006505L); + genesisBlock.setDifficultyTarget(0x200f0f0fL); + genesisBlock.setNonce(0x000000000000000000000000000000000000000000000000000000000000000bL); + // TODO: merkle root + return genesisBlock; + } + + private static PirateChainMainNetParams instance; + public static synchronized PirateChainMainNetParams get() { + if (instance == null) { + instance = new PirateChainMainNetParams(); + } + return instance; + } + + @Override + public String getPaymentProtocolId() { + return ID_ARRR_MAINNET; + } + + @Override + public boolean isTestNet() { + return false; + } +}