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checkpoints.cpp 2.4KB

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  1. // Copyright (c) 2011 The Bitcoin developers
  2. // Distributed under the MIT/X11 software license, see the accompanying
  3. // file license.txt or http://www.opensource.org/licenses/mit-license.php.
  4. #include <boost/assign/list_of.hpp> // for 'map_list_of()'
  5. #include <boost/foreach.hpp>
  6. #include "headers.h"
  7. #include "checkpoints.h"
  8. namespace Checkpoints
  9. {
  10. typedef std::map<int, uint256> MapCheckpoints;
  11. //
  12. // What makes a good checkpoint block?
  13. // + Is surrounded by blocks with reasonable timestamps
  14. // (no blocks before with a timestamp after, none after with
  15. // timestamp before)
  16. // + Contains no strange transactions
  17. //
  18. static MapCheckpoints mapCheckpoints =
  19. boost::assign::map_list_of
  20. ( 11111, uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
  21. ( 33333, uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"))
  22. ( 68555, uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a"))
  23. ( 70567, uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a"))
  24. ( 74000, uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
  25. (105000, uint256("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"))
  26. (118000, uint256("0x000000000000774a7f8a7a12dc906ddb9e17e75d684f15e00f8767f9e8f36553"))
  27. (134444, uint256("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"))
  28. (140700, uint256("0x000000000000033b512028abb90e1626d8b346fd0ed598ac0a3c371138dce2bd"))
  29. ;
  30. bool CheckBlock(int nHeight, const uint256& hash)
  31. {
  32. if (fTestNet) return true; // Testnet has no checkpoints
  33. MapCheckpoints::const_iterator i = mapCheckpoints.find(nHeight);
  34. if (i == mapCheckpoints.end()) return true;
  35. return hash == i->second;
  36. }
  37. int GetTotalBlocksEstimate()
  38. {
  39. if (fTestNet) return 0;
  40. return mapCheckpoints.rbegin()->first;
  41. }
  42. CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
  43. {
  44. if (fTestNet) return NULL;
  45. BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
  46. {
  47. const uint256& hash = i.second;
  48. std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
  49. if (t != mapBlockIndex.end())
  50. return t->second;
  51. }
  52. return NULL;
  53. }
  54. }