fd46136dfa
This introduces a 'minimum chain work' chainparam which is intended to be the known amount of work in the chain for the network at the time of software release. If you don't have this much work, you're not yet caught up. This is used instead of the count of blocks test from checkpoints. This criteria is trivial to keep updated as there is no element of subjectivity, trust, or position dependence to it. It is also a more reliable metric of sync status than a block count.
350 lines
18 KiB
C++
350 lines
18 KiB
C++
// Copyright (c) 2010 Satoshi Nakamoto
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// Copyright (c) 2009-2015 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "chainparams.h"
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#include "consensus/merkle.h"
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#include "tinyformat.h"
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#include "util.h"
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#include "utilstrencodings.h"
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#include <assert.h>
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#include <boost/assign/list_of.hpp>
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#include "chainparamsseeds.h"
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static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
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{
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CMutableTransaction txNew;
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txNew.nVersion = 1;
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txNew.vin.resize(1);
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txNew.vout.resize(1);
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txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
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txNew.vout[0].nValue = genesisReward;
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txNew.vout[0].scriptPubKey = genesisOutputScript;
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CBlock genesis;
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genesis.nTime = nTime;
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genesis.nBits = nBits;
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genesis.nNonce = nNonce;
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genesis.nVersion = nVersion;
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genesis.vtx.push_back(txNew);
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genesis.hashPrevBlock.SetNull();
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genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
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return genesis;
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}
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/**
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* Build the genesis block. Note that the output of its generation
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* transaction cannot be spent since it did not originally exist in the
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* database.
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*
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* CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
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* CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
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* CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
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* CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
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* vMerkleTree: 4a5e1e
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*/
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static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
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{
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const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
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const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
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return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
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}
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/**
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* Main network
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*/
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/**
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* What makes a good checkpoint block?
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* + Is surrounded by blocks with reasonable timestamps
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* (no blocks before with a timestamp after, none after with
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* timestamp before)
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* + Contains no strange transactions
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*/
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class CMainParams : public CChainParams {
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public:
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CMainParams() {
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strNetworkID = "main";
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consensus.nSubsidyHalvingInterval = 210000;
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consensus.BIP34Height = 227931;
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consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
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consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
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consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
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consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
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consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
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consensus.nPowTargetSpacing = 10 * 60;
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consensus.fPowAllowMinDifficultyBlocks = false;
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consensus.fPowNoRetargeting = false;
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consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
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consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
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// Deployment of BIP68, BIP112, and BIP113.
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
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// Deployment of SegWit (BIP141, BIP143, and BIP147)
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016.
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017.
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// The best chain should have at least this much work.
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consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000002cb971dd56d1c583c20f90");
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/**
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* The message start string is designed to be unlikely to occur in normal data.
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* The characters are rarely used upper ASCII, not valid as UTF-8, and produce
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* a large 32-bit integer with any alignment.
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*/
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pchMessageStart[0] = 0xf9;
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pchMessageStart[1] = 0xbe;
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pchMessageStart[2] = 0xb4;
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pchMessageStart[3] = 0xd9;
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nDefaultPort = 8333;
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nPruneAfterHeight = 100000;
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genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
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consensus.hashGenesisBlock = genesis.GetHash();
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assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
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assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
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// Note that of those with the service bits flag, most only support a subset of possible options
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vSeeds.push_back(CDNSSeedData("bitcoin.sipa.be", "seed.bitcoin.sipa.be", true)); // Pieter Wuille, only supports x1, x5, x9, and xd
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vSeeds.push_back(CDNSSeedData("bluematt.me", "dnsseed.bluematt.me", true)); // Matt Corallo, only supports x9
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vSeeds.push_back(CDNSSeedData("dashjr.org", "dnsseed.bitcoin.dashjr.org")); // Luke Dashjr
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vSeeds.push_back(CDNSSeedData("bitcoinstats.com", "seed.bitcoinstats.com", true)); // Christian Decker, supports x1 - xf
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vSeeds.push_back(CDNSSeedData("xf2.org", "bitseed.xf2.org")); // Jeff Garzik
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vSeeds.push_back(CDNSSeedData("bitcoin.jonasschnelli.ch", "seed.bitcoin.jonasschnelli.ch", true)); // Jonas Schnelli, only supports x1, x5, x9, and xd
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base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
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base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
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base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
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base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x88)(0xB2)(0x1E).convert_to_container<std::vector<unsigned char> >();
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base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x88)(0xAD)(0xE4).convert_to_container<std::vector<unsigned char> >();
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vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
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fMiningRequiresPeers = true;
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fDefaultConsistencyChecks = false;
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fRequireStandard = true;
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fMineBlocksOnDemand = false;
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checkpointData = (CCheckpointData) {
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boost::assign::map_list_of
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( 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
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( 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"))
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( 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
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(105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"))
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(134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"))
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(168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763"))
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(193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317"))
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(210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e"))
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(216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e"))
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(225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932"))
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(250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214"))
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(279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40"))
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(295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")),
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1397080064, // * UNIX timestamp of last checkpoint block
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36544669, // * total number of transactions between genesis and last checkpoint
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// (the tx=... number in the SetBestChain debug.log lines)
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60000.0 // * estimated number of transactions per day after checkpoint
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};
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}
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};
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static CMainParams mainParams;
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/**
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* Testnet (v3)
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*/
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class CTestNetParams : public CChainParams {
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public:
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CTestNetParams() {
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strNetworkID = "test";
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consensus.nSubsidyHalvingInterval = 210000;
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consensus.BIP34Height = 21111;
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consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
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consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
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consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
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consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
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consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
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consensus.nPowTargetSpacing = 10 * 60;
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consensus.fPowAllowMinDifficultyBlocks = true;
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consensus.fPowNoRetargeting = false;
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consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
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consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
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// Deployment of BIP68, BIP112, and BIP113.
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
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// Deployment of SegWit (BIP141, BIP143, and BIP147)
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017
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// The best chain should have at least this much work.
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consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000198b4def2baa9338d6");
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pchMessageStart[0] = 0x0b;
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pchMessageStart[1] = 0x11;
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pchMessageStart[2] = 0x09;
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pchMessageStart[3] = 0x07;
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nDefaultPort = 18333;
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nPruneAfterHeight = 1000;
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genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
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consensus.hashGenesisBlock = genesis.GetHash();
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assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
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assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
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vFixedSeeds.clear();
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vSeeds.clear();
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// nodes with support for servicebits filtering should be at the top
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vSeeds.push_back(CDNSSeedData("testnetbitcoin.jonasschnelli.ch", "testnet-seed.bitcoin.jonasschnelli.ch", true));
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vSeeds.push_back(CDNSSeedData("petertodd.org", "seed.tbtc.petertodd.org", true));
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vSeeds.push_back(CDNSSeedData("bluematt.me", "testnet-seed.bluematt.me"));
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vSeeds.push_back(CDNSSeedData("bitcoin.schildbach.de", "testnet-seed.bitcoin.schildbach.de"));
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base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
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base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
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base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
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base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
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base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
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vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
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fMiningRequiresPeers = true;
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fDefaultConsistencyChecks = false;
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fRequireStandard = false;
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fMineBlocksOnDemand = false;
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checkpointData = (CCheckpointData) {
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boost::assign::map_list_of
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( 546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")),
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1337966069,
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1488,
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300
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};
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}
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};
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static CTestNetParams testNetParams;
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/**
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* Regression test
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*/
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class CRegTestParams : public CChainParams {
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public:
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CRegTestParams() {
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strNetworkID = "regtest";
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consensus.nSubsidyHalvingInterval = 150;
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consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
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consensus.BIP34Hash = uint256();
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consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests)
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consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests)
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consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
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consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
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consensus.nPowTargetSpacing = 10 * 60;
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consensus.fPowAllowMinDifficultyBlocks = true;
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consensus.fPowNoRetargeting = true;
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consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
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consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
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consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
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consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
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consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
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// The best chain should have at least this much work.
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consensus.nMinimumChainWork = uint256S("0x00");
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pchMessageStart[0] = 0xfa;
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pchMessageStart[1] = 0xbf;
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pchMessageStart[2] = 0xb5;
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pchMessageStart[3] = 0xda;
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nDefaultPort = 18444;
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nPruneAfterHeight = 1000;
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genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
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consensus.hashGenesisBlock = genesis.GetHash();
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assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
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assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
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vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
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vSeeds.clear(); //!< Regtest mode doesn't have any DNS seeds.
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fMiningRequiresPeers = false;
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fDefaultConsistencyChecks = true;
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fRequireStandard = false;
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fMineBlocksOnDemand = true;
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checkpointData = (CCheckpointData){
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boost::assign::map_list_of
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( 0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")),
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0,
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0,
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0
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};
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base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
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base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
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base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
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base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
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base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
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}
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void UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
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{
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consensus.vDeployments[d].nStartTime = nStartTime;
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consensus.vDeployments[d].nTimeout = nTimeout;
|
|
}
|
|
};
|
|
static CRegTestParams regTestParams;
|
|
|
|
static CChainParams *pCurrentParams = 0;
|
|
|
|
const CChainParams &Params() {
|
|
assert(pCurrentParams);
|
|
return *pCurrentParams;
|
|
}
|
|
|
|
CChainParams& Params(const std::string& chain)
|
|
{
|
|
if (chain == CBaseChainParams::MAIN)
|
|
return mainParams;
|
|
else if (chain == CBaseChainParams::TESTNET)
|
|
return testNetParams;
|
|
else if (chain == CBaseChainParams::REGTEST)
|
|
return regTestParams;
|
|
else
|
|
throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
|
|
}
|
|
|
|
void SelectParams(const std::string& network)
|
|
{
|
|
SelectBaseParams(network);
|
|
pCurrentParams = &Params(network);
|
|
}
|
|
|
|
void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
|
|
{
|
|
regTestParams.UpdateBIP9Parameters(d, nStartTime, nTimeout);
|
|
}
|
|
|