text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2016 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
  
  #include <stdint.h>
  
  /** The maximum allowed size for a serialized block, in bytes (only for buffer size limits) */
  static const unsigned int MAX_BLOCK_SERIALIZED_SIZE = 4000000;
  /** The maximum allowed weight for a block, see BIP 141 (network rule) */
  static const unsigned int MAX_BLOCK_WEIGHT = 4000000;
  /** The maximum allowed size for a block excluding witness data, in bytes (network rule) */
  static const unsigned int MAX_BLOCK_BASE_SIZE = 1000000;
  /** The maximum allowed number of signature check operations in a block (network rule) */
  static const int64_t MAX_BLOCK_SIGOPS_COST = 80000;
  /** Coinbase transaction outputs can only be spent after this number of new blocks (network rule) */
  static const int COINBASE_MATURITY = 100;
  
  /** 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
  