5 files changed, 21 insertions, 0 deletions
diff --git a/src/cryptonote_core/blockchain.h b/src/cryptonote_core/blockchain.h
index 769e608ca..ef736d1e7 100644
--- a/src/cryptonote_core/blockchain.h
+++ b/src/cryptonote_core/blockchain.h
@@ -795,6 +795,13 @@ namespace cryptonote
     uint8_t get_hard_fork_version(uint64_t height) const { return m_hardfork->get(height); }
 
     /**
+     * @brief returns the earliest block a given version may activate
+     *
+     * @return the height
+     */
+    uint64_t get_earliest_ideal_height_for_version(uint8_t version) const { return m_hardfork->get_earliest_ideal_height_for_version(version); }
+
+    /**
      * @brief get information about hardfork voting for a version
      *
      * @param version the version in question
diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index d2796deeb..7d34415c4 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -1401,6 +1401,11 @@ namespace cryptonote
     return get_blockchain_storage().get_hard_fork_version(height);
   }
   //-----------------------------------------------------------------------------------------------
+  uint64_t core::get_earliest_ideal_height_for_version(uint8_t version) const
+  {
+    return get_blockchain_storage().get_earliest_ideal_height_for_version(version);
+  }
+  //-----------------------------------------------------------------------------------------------
   bool core::check_updates()
   {
     static const char software[] = "monero";
diff --git a/src/cryptonote_core/cryptonote_core.h b/src/cryptonote_core/cryptonote_core.h
index 17b5680e5..567966d48 100644
--- a/src/cryptonote_core/cryptonote_core.h
+++ b/src/cryptonote_core/cryptonote_core.h
@@ -663,6 +663,13 @@ namespace cryptonote
      uint8_t get_hard_fork_version(uint64_t height) const;
 
      /**
+      * @brief return the earliest block a given version may activate
+      *
+      * @return what it says above
+      */
+     uint64_t get_earliest_ideal_height_for_version(uint8_t version) const;
+
+     /**
       * @brief gets start_time
       *
       */
diff --git a/tests/core_proxy/core_proxy.h b/tests/core_proxy/core_proxy.h
index 6684c134c..8b7ac4291 100644
--- a/tests/core_proxy/core_proxy.h
+++ b/tests/core_proxy/core_proxy.h
@@ -100,6 +100,7 @@ namespace tests
     uint8_t get_ideal_hard_fork_version() const { return 0; }
     uint8_t get_ideal_hard_fork_version(uint64_t height) const { return 0; }
     uint8_t get_hard_fork_version(uint64_t height) const { return 0; }
+    uint64_t get_earliest_ideal_height_for_version(uint8_t version) const { return 0; }
     cryptonote::difficulty_type get_block_cumulative_difficulty(uint64_t height) const { return 0; }
     bool fluffy_blocks_enabled() const { return false; }
     uint64_t prevalidate_block_hashes(uint64_t height, const std::list<crypto::hash> &hashes) { return 0; }
diff --git a/tests/unit_tests/ban.cpp b/tests/unit_tests/ban.cpp
index e56a89971..15bc0bce3 100644
--- a/tests/unit_tests/ban.cpp
+++ b/tests/unit_tests/ban.cpp
@@ -79,6 +79,7 @@ public:
   uint8_t get_ideal_hard_fork_version() const { return 0; }
   uint8_t get_ideal_hard_fork_version(uint64_t height) const { return 0; }
   uint8_t get_hard_fork_version(uint64_t height) const { return 0; }
+  uint64_t get_earliest_ideal_height_for_version(uint8_t version) const { return 0; }
   cryptonote::difficulty_type get_block_cumulative_difficulty(uint64_t height) const { return 0; }
   bool fluffy_blocks_enabled() const { return false; }
   uint64_t prevalidate_block_hashes(uint64_t height, const std::list<crypto::hash> &hashes) { return 0; }