verification_context

  struct tx_verification_context
  {
    bool m_should_be_relayed;
    bool m_verifivation_failed; //bad tx, should drop connection
    bool m_verifivation_impossible; //the transaction is related with an alternative blockchain
    bool m_added_to_pool; 
    bool m_low_mixin;
    bool m_double_spend;
    bool m_invalid_input;
    bool m_invalid_output;
    bool m_too_big;
    bool m_overspend;
    bool m_fee_too_low;
    bool m_not_rct;
  };

  struct block_verification_context
  {
    bool m_added_to_main_chain;
    bool m_verifivation_failed; //bad block, should drop connection
    bool m_marked_as_orphaned;
    bool m_already_exists;
    bool m_partial_block_reward;
  };