Novacoin/Checkpoints.cs

   1 using System;
   2
   3 namespace Novacoin
   4 {
   5     public static class HashCheckpoints
   6     {
   7         private static Tuple<uint, uint256, uint>[] checkpoints = new Tuple<uint, uint256, uint>[]
   8             {
   9                 new Tuple<uint, uint256, uint>(0, NetInfo.nHashGenesisBlock, 1360105017),
  10                 new Tuple<uint, uint256, uint>(200000, new uint256("0000000000029f8bbf66e6ea6f3e5db55009404aae0fe395a53dd33142b2bff2"), 1441127233),
  11             };
  12
  13         /// <summary>
  14         /// Last checkpoint height.
  15         /// </summary>
  16         public static uint TotalBlocksEstimate { get { return checkpoints[checkpoints.Length - 1].Item1; } }
  17
  18         /// <summary>
  19         /// Last checkpoint timestamp.
  20         /// </summary>
  21         public static uint LastCheckpointTime { get { return checkpoints[checkpoints.Length - 1].Item3; } }
  22
  23         /// <summary>
  24         /// Block hash verification.
  25         /// </summary>
  26         /// <param name="nHeight">Block height.</param>
  27         /// <param name="nBlockHash">Block hash.</param>
  28         /// <returns></returns>
  29         public static bool Verify(uint nHeight, uint256 nBlockHash)
  30         {
  31             foreach (var checkpoint in checkpoints)
  32             {
  33                 if (checkpoint.Item1 == nHeight)
  34                 {
  35                     return nBlockHash == checkpoint.Item2;
  36                 }
  37             }
  38
  39             return true;
  40         }
  41     }
  42
  43     public static class ModifierCheckpoints
  44     {
  45         /// <summary>
  46         /// Stake modifier checkpoints
  47         /// </summary>
  48         private static Tuple<uint, uint>[] modifierCheckpoints = new Tuple<uint, uint>[]
  49             {
  50                 new Tuple<uint, uint>( 0, 0x0e00670bu ),
  51                 new Tuple<uint, uint>(200000, 0x01ec1503u )
  52             };
  53
  54         /// <summary>
  55         /// Check stake modifier checkpoints.
  56         /// </summary>
  57         /// <param name="nHeight">Block height.</param>
  58         /// <param name="nStakeModifierChecksum">Modifier checksum value.</param>
  59         /// <returns>Result</returns>
  60         public static bool Verify(uint nHeight, uint nStakeModifierChecksum)
  61         {
  62             foreach (var checkpoint in modifierCheckpoints)
  63             {
  64                 if (checkpoint.Item1 == nHeight)
  65                 {
  66                     return checkpoint.Item2 == nStakeModifierChecksum;
  67                 }
  68             }
  69
  70             return true;
  71         }
  72     }
  73 }