2 files changed, 9 insertions, 0 deletions
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 83e6e40b0..badb1a335 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -85,6 +85,12 @@ static const struct {
 
   // version 3 starts from block 1141317, which is on or around the 24th of September, 2016. Fork time finalised on 2016-03-21.
   { 3, 1141317, 0, 1458558528 },
+  
+  // version 4 starts from block 1220517, which is on or around the 5th of January, 2017. Fork time finalised on 2016-09-18.
+  { 4, 1220517, 0, 1483574400 },
+  
+  // version 5 starts from block 1406997, which is on or around the 20th of September, 2017. Fork time finalised on 2016-09-18.
+  { 5, 1406997, 0, 1505865600 },  
 };
 static const uint64_t mainnet_hard_fork_version_1_till = 1009826;
 
@@ -100,6 +106,7 @@ static const struct {
   // version 2 starts from block 624634, which is on or around the 23rd of November, 2015. Fork time finalised on 2015-11-20. No fork voting occurs for the v2 fork.
   { 2, 624634, 0, 1445355000 },
 
+  // versions 3-5 were passed in rapid succession from September 18th, 2016
   { 3, 800500, 0, 1472415034 },
   { 4, 801220, 0, 1472415035 },
   { 5, 802660, 0, 1472415036 },
diff --git a/src/cryptonote_core/checkpoints.cpp b/src/cryptonote_core/checkpoints.cpp
index c038a4802..1d5959c46 100644
--- a/src/cryptonote_core/checkpoints.cpp
+++ b/src/cryptonote_core/checkpoints.cpp
@@ -184,6 +184,8 @@ namespace cryptonote
     ADD_CHECKPOINT(825000, "56503f9ad766774b575be3aff73245e9d159be88132c93d1754764f28da2ff60");
     ADD_CHECKPOINT(900000, "d9958d0e7dcf91a5a7b11de225927bf7efc6eb26240315ce12372be902cc1337");
     ADD_CHECKPOINT(913193, "5292d5d56f6ba4de33a58d9a34d263e2cb3c6fee0aed2286fd4ac7f36d53c85f");
+    ADD_CHECKPOINT(1000000, "a886ef5149902d8342475fee9bb296341b891ac67c4842f47a833f23c00ed721");
+    ADD_CHECKPOINT(1100000, "3fd720c5c8b3072fc1ccda922dec1ef25f9ed88a1e6ad4103d0fe00b180a5903");
 
     return true;
   }