github.com/codingfuture/orig-energi3@v0.8.4/energi/contracts/src/ICheckpointRegistry.sol (about)

     1  // Copyright 2019 The Energi Core Authors
     2  // This file is part of Energi Core.
     3  //
     4  // Energi Core is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // Energi Core is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with Energi Core. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // Energi Governance system is the fundamental part of Energi Core.
    18  
    19  // NOTE: It's not allowed to change the compiler due to byte-to-byte
    20  //       match requirement.
    21  pragma solidity 0.5.16;
    22  //pragma experimental SMTChecker;
    23  pragma experimental ABIEncoderV2;
    24  
    25  import { ICheckpoint } from "./ICheckpoint.sol";
    26  
    27  /**
    28   * Genesis version of CheckpointRegistry interface.
    29   *
    30   * NOTE: it MUST NOT change after blockchain launch!
    31   */
    32  interface ICheckpointRegistry {
    33      event Checkpoint(
    34          uint indexed number,
    35          bytes32 hash,
    36          ICheckpoint checkpoint
    37      );
    38  
    39      function CPP_signer() external view returns(address);
    40  
    41      function propose(uint number, bytes32 hash, bytes calldata signature) external returns(ICheckpoint);
    42      function checkpoints() external view returns(ICheckpoint[] memory);
    43      function signatureBase(uint number, bytes32 hash) external view returns(bytes32 sigbase);
    44      function sign(ICheckpoint checkpoint, bytes calldata signature) external;
    45  }