diff --git a/src/currency_core/basic_pow_helpers.cpp b/src/currency_core/basic_pow_helpers.cpp
index 95ed6dfd..94af36d9 100644
--- a/src/currency_core/basic_pow_helpers.cpp
+++ b/src/currency_core/basic_pow_helpers.cpp
@@ -39,6 +39,14 @@ namespace currency
     return height / ETHASH_EPOCH_LENGTH;
   }
   //--------------------------------------------------------------
+  crypto::hash ethash_epoch_to_seed(int epoch)
+  {
+    auto res_eth = ethash_calculate_epoch_seed(epoch);
+    crypto::hash result = currency::null_hash;
+    memcpy(&result.data, &res_eth, sizeof(res_eth));
+    return result;
+  }
+  //--------------------------------------------------------------
   crypto::hash get_block_longhash(uint64_t height, const crypto::hash& block_long_ash, uint64_t nonce)
   {
     int epoch = ethash_height_to_epoch(height);
diff --git a/src/currency_core/basic_pow_helpers.h b/src/currency_core/basic_pow_helpers.h
index ccc1a132..4bea2718 100644
--- a/src/currency_core/basic_pow_helpers.h
+++ b/src/currency_core/basic_pow_helpers.h
@@ -28,6 +28,7 @@
 namespace currency
 {
   int ethash_height_to_epoch(uint64_t height);
+  crypto::hash ethash_epoch_to_seed(int epoch);
   crypto::hash get_block_longhash(uint64_t h, const crypto::hash& block_long_ash, uint64_t nonce);
   void get_block_longhash(const block& b, crypto::hash& res);
   crypto::hash get_block_longhash(const block& b);
diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index 5089f054..a27ec33d 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -799,6 +799,10 @@ namespace currency
 
     res.blocktemplate_blob = string_tools::buff_to_hex_nodelimer(block_blob);
     res.prev_hash = string_tools::pod_to_hex(b.prev_id);
+
+    //calculate epoch seed
+    res.seed = currency::ethash_epoch_to_seed(currency::ethash_height_to_epoch(res.height));
+
     res.status = CORE_RPC_STATUS_OK;
 
     return true;