text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2015 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_CONSENSUS_H
  #define BITCOIN_CONSENSUS_CONSENSUS_H
  
  /** The maximum allowed size for a serialized block, in bytes (network rule) */
  static const unsigned int MAX_LEGACY_BLOCK_SIZE = 1000000;
  static const unsigned int MAX_DIP0001_BLOCK_SIZE = 2000000;
  inline unsigned int MaxBlockSize(bool fDIP0001Active /*= false */)
  {
      return fDIP0001Active ? MAX_DIP0001_BLOCK_SIZE : MAX_LEGACY_BLOCK_SIZE;
  }
  /** The maximum allowed number of signature check operations in a block (network rule) */
  inline unsigned int MaxBlockSigOps(bool fDIP0001Active /*= false */)
  {
      return MaxBlockSize(fDIP0001Active) / 50;
  }
  /** Coinbase transaction outputs can only be spent after this number of new blocks (network rule) */
  static const int COINBASE_MATURITY = 2;
  
  /** Flags for nSequence and nLockTime locks */
  enum {
      /* Interpret sequence numbers as relative lock-time constraints. */
      LOCKTIME_VERIFY_SEQUENCE = (1 << 0),
  
      /* Use GetMedianTimePast() instead of nTime for end point timestamp. */
      LOCKTIME_MEDIAN_TIME_PAST = (1 << 1),
  };
  
  #endif // BITCOIN_CONSENSUS_CONSENSUS_H
  