signet.h raw

   1  // Copyright (c) 2019-present The Bitcoin Core developers
   2  // Distributed under the MIT software license, see the accompanying
   3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4  
   5  #ifndef BITCOIN_SIGNET_H
   6  #define BITCOIN_SIGNET_H
   7  
   8  #include <primitives/block.h>
   9  #include <primitives/transaction.h>
  10  
  11  #include <optional>
  12  
  13  class CScript;
  14  namespace Consensus {
  15  struct Params;
  16  } // namespace Consensus
  17  
  18  /**
  19   * Extract signature and check whether a block has a valid solution
  20   */
  21  bool CheckSignetBlockSolution(const CBlock& block, const Consensus::Params& consensusParams);
  22  
  23  /**
  24   * Generate the signet tx corresponding to the given block
  25   *
  26   * The signet tx commits to everything in the block except:
  27   * 1. It hashes a modified merkle root with the signet signature removed.
  28   * 2. It skips the nonce.
  29   */
  30  class SignetTxs {
  31      template<class T1, class T2>
  32      SignetTxs(const T1& to_spend, const T2& to_sign) : m_to_spend{to_spend}, m_to_sign{to_sign} { }
  33  
  34  public:
  35      static std::optional<SignetTxs> Create(const CBlock& block, const CScript& challenge);
  36  
  37      const CTransaction m_to_spend;
  38      const CTransaction m_to_sign;
  39  };
  40  
  41  #endif // BITCOIN_SIGNET_H
  42