src/consensus/consensus.h

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2016 The Bitcoin Core developers
   3 // Distributed under the MIT software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #ifndef BITCOIN_CONSENSUS_CONSENSUS_H
   7 #define BITCOIN_CONSENSUS_CONSENSUS_H
   8
   9 #include <stdlib.h>
  10 #include <stdint.h>
  11
  12 /** The maximum allowed size for a serialized block, in bytes (only for buffer size limits) */
  13 static const unsigned int MAX_BLOCK_SERIALIZED_SIZE = 4000000;
  14 /** The maximum allowed weight for a block, see BIP 141 (network rule) */
  15 static const unsigned int MAX_BLOCK_WEIGHT = 4000000;
  16 /** The maximum allowed number of signature check operations in a block (network rule) */
  17 static const int64_t MAX_BLOCK_SIGOPS_COST = 80000;
  18 /** Coinbase transaction outputs can only be spent after this number of new blocks (network rule) */
  19 static const int COINBASE_MATURITY = 100;
  20
  21 static const int WITNESS_SCALE_FACTOR = 4;
  22
  23 static const size_t MIN_TRANSACTION_WEIGHT = WITNESS_SCALE_FACTOR * 60; // 60 is the lower bound for the size of a valid serialized CTransaction
  24 static const size_t MIN_SERIALIZABLE_TRANSACTION_WEIGHT = WITNESS_SCALE_FACTOR * 10; // 10 is the lower bound for the size of a serialized CTransaction
  25
  26 /** Flags for nSequence and nLockTime locks */
  27 enum {
  28     /* Interpret sequence numbers as relative lock-time constraints. */
  29     LOCKTIME_VERIFY_SEQUENCE = (1 << 0),
  30
  31     /* Use GetMedianTimePast() instead of nTime for end point timestamp. */
  32     LOCKTIME_MEDIAN_TIME_PAST = (1 << 1),
  33 };
  34
  35 #endif // BITCOIN_CONSENSUS_CONSENSUS_H