diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler_eth.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler_eth.hpp
index 505bc3a4..40f2a7ae 100644
--- a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler_eth.hpp
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler_eth.hpp
@@ -121,13 +121,16 @@ public:
 
 private:
    class ethereum_function_call_encoder {
-	std::string encode_function_signature(const std::string& function_signature);
-	std::string encode_address(const std::string& addr);
-	std::string encode_uint256(const std::string& value);
-	std::string encode_uint8(uint8_t value);
-	std::string encode_bytes(const std::string& values);
+      public:
+	 std::string encode_function_signature(const std::string& function_signature);
+	 std::string encode_address(const std::string& addr);
+	 std::string encode_uint256(const std::string& value);
+	 std::string encode_uint8(uint8_t value);
+	 std::string encode_bytes(const std::string& values);
    };
 
+   ethereum_function_call_encoder m_ethereum_function_call_encoder;
+
    std::string geth_url;
    uint64_t t_id;
    std::string account_address;
diff --git a/libraries/plugins/peerplays_sidechain/sidechain_net_handler_eth.cpp b/libraries/plugins/peerplays_sidechain/sidechain_net_handler_eth.cpp
index 25464be8..7fe06e86 100644
--- a/libraries/plugins/peerplays_sidechain/sidechain_net_handler_eth.cpp
+++ b/libraries/plugins/peerplays_sidechain/sidechain_net_handler_eth.cpp
@@ -28,16 +28,16 @@ namespace graphene { namespace peerplays_sidechain {
 // =============================================================================
 std::string eth_rpc_client::ethereum_function_call_encoder::encode_function_signature(const std::string& function_signature) {
    sha3_context c;
-   uint8_t *hash;
+   char *hash;
 
    sha3_Init256(static_cast<void*>(&c));
+   sha3_SetFlags(&c, SHA3_FLAGS_KECCAK);
    sha3_Update(&c, "abc", 3);
-   hash = (uint8_t*)sha3_Finalize(&c);
+   hash = (char*)sha3_Finalize(&c);
+   std::string output(hash);
+   output = output.substr(0,8);
 
-// 'hash' points to a buffer inside 'c'
-// with the value of SHA3-256
-//
-     	return "";
+   return output;
 };
 
 std::string eth_rpc_client::ethereum_function_call_encoder::encode_address(const std::string& addr) {
@@ -268,7 +268,8 @@ uint64_t eth_rpc_client::add_owner(const std::string& addr ) {
    //It's require to execute
    //execTransaction method of smart contract , using safe-account address
    //execTransaction(address to, uint256 value, bytes data, uint8 operation, uint256 safeTxGas, uint256 dataGas, uint256 gasPrice, address gasToken, address refundReceiver, bytes signatures)
-   std::string method_id = "6a761202";
+   std::string method_id = m_ethereum_function_call_encoder.encode_function_signature("execTransaction(address,uint256,bytes,uint8,uint256,uint256,uint256,address,address,bytes)");
+   FC_ASSERT("6a761202" == method_id);
    std::string address = safe_account_addr;
    std::string value =  str(boost::format("%020u") % 0);
    std::string data = "f8dc5dd9000000000000000000000000" + owners[0] + "000000000000000000000000" + addr + str(boost::format("%032u") % threshold);
@@ -297,7 +298,8 @@ uint64_t eth_rpc_client::remove_owner(const std::string& addr, uint32_t threshol
    //It's require to execute
    //execTransaction method of smart contract , using safe-account address
    //execTransaction(address to, uint256 value, bytes data, uint8 operation, uint256 safeTxGas, uint256 dataGas, uint256 gasPrice, address gasToken, address refundReceiver, bytes signatures)
-   std::string method_id = "6a761202";
+   std::string method_id = m_ethereum_function_call_encoder.encode_function_signature("execTransaction(address,uint256,bytes,uint8,uint256,uint256,uint256,address,address,bytes)");
+   FC_ASSERT("6a761202" == method_id);
    std::string address = safe_account_addr;  
    std::string value =  str(boost::format("%032u") % 0);
    std::string data = "f8dc5dd90000000000000000000000000000000000000000000000000000000000000001000000000000000000000000" + addr + str(boost::format("%032u") % threshold);