params.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_CONSENSUS_PARAMS_H
#define BITCOIN_CONSENSUS_PARAMS_H
 
#include <uint256.h>
#include <limits>
 
namespace Consensus {
 
enum DeploymentPos
{
    DEPLOYMENT_TESTDUMMY,
    DEPLOYMENT_TAPROOT, // Deployment of Schnorr/Taproot (BIPs 340-342)
    // NOTE: Also add new deployments to VersionBitsDeploymentInfo in versionbits.cpp
    MAX_VERSION_BITS_DEPLOYMENTS
};
 
struct BIP9Deployment {
    int bit;
    int64_t nStartTime;
    int64_t nTimeout;
    int min_activation_height{0};
 
    static constexpr int64_t NO_TIMEOUT = std::numeric_limits<int64_t>::max();
 
    static constexpr int64_t ALWAYS_ACTIVE = -1;
 
    static constexpr int64_t NEVER_ACTIVE = -2;
};
 
struct Params {
    uint256 hashGenesisBlock;
    int nSubsidyHalvingInterval;
    /* Block hash that is excepted from BIP16 enforcement */
    uint256 BIP16Exception;
    int BIP34Height;
    uint256 BIP34Hash;
    int BIP65Height;
    int BIP66Height;
    int CSVHeight;
    int SegwitHeight;
    int MinBIP9WarningHeight;
    uint32_t nRuleChangeActivationThreshold;
    uint32_t nMinerConfirmationWindow;
    BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS];
    uint256 powLimit;
    bool fPowAllowMinDifficultyBlocks;
    bool fPowNoRetargeting;
    int64_t nPowTargetSpacing;
    int64_t nPowTargetTimespan;
    int64_t DifficultyAdjustmentInterval() const { return nPowTargetTimespan / nPowTargetSpacing; }
    uint256 nMinimumChainWork;
    uint256 defaultAssumeValid;
 
    bool signet_blocks{false};
    std::vector<uint8_t> signet_challenge;
};
} // namespace Consensus
 
#endif // BITCOIN_CONSENSUS_PARAMS_H