diff --git a/libraries/plugins/peerplays_sidechain/CMakeLists.txt b/libraries/plugins/peerplays_sidechain/CMakeLists.txt
index 4941ce51..816bf680 100644
--- a/libraries/plugins/peerplays_sidechain/CMakeLists.txt
+++ b/libraries/plugins/peerplays_sidechain/CMakeLists.txt
@@ -5,6 +5,7 @@ add_library( peerplays_sidechain
              sidechain_net_manager.cpp
              sidechain_net_handler.cpp
              sidechain_net_handler_bitcoin.cpp
+             bitcoin_utils.cpp
            )
 
 target_link_libraries( peerplays_sidechain graphene_chain graphene_app fc zmq )
diff --git a/libraries/plugins/peerplays_sidechain/bitcoin_utils.cpp b/libraries/plugins/peerplays_sidechain/bitcoin_utils.cpp
new file mode 100644
index 00000000..7064ebc9
--- /dev/null
+++ b/libraries/plugins/peerplays_sidechain/bitcoin_utils.cpp
@@ -0,0 +1,92 @@
+#include <graphene/peerplays_sidechain/bitcoin_utils.hpp>
+#include <fc/io/raw.hpp>
+#include <fc/crypto/base58.hpp>
+#include <fc/crypto/elliptic.hpp>
+#include <fc/crypto/ripemd160.hpp>
+#include <fc/crypto/sha256.hpp>
+
+namespace graphene { namespace peerplays_sidechain {
+
+static const unsigned char OP_IF = 0x63;
+static const unsigned char OP_ENDIF = 0x68;
+static const unsigned char OP_SWAP = 0x7c;
+static const unsigned char OP_ADD = 0x93;
+static const unsigned char OP_GREATERTHAN = 0xa0;
+static const unsigned char OP_CHECKSIG = 0xac;
+
+class WriteBytesStream{
+public:
+   WriteBytesStream(bytes& buffer);
+
+   bool write( const char* d, size_t s ) {
+      storage_.insert(storage_.end(), d, d + s);
+      return true;
+   }
+
+   bool put(char c) {
+      storage_.push_back(c);
+      return true;
+   }
+private:
+   bytes& storage_;
+};
+
+
+void add_data_to_script(bytes& script, const bytes& data)
+{
+   WriteBytesStream str(script);
+   fc::raw::pack(str, data, 2);
+}
+
+bytes generate_redeem_script(fc::flat_map<fc::ecc::public_key, int> key_data)
+{
+   int total_weight = 0;
+   bytes result;
+   add_data_to_script(result, {0});
+   for(auto& p: key_data)
+   {
+      total_weight += p.second;
+      result.push_back(OP_SWAP);
+      auto raw_data = p.first.serialize();
+      add_data_to_script(result, bytes(raw_data.begin(), raw_data.begin() + raw_data.size()));
+      result.push_back(OP_CHECKSIG);
+      result.push_back(OP_IF);
+      add_data_to_script(result, {static_cast<unsigned char>(p.second)});
+      result.push_back(OP_ADD);
+      result.push_back(OP_ENDIF);
+   }
+   int threshold_weight = 2 * total_weight / 3;
+   add_data_to_script(result, {static_cast<unsigned char>(threshold_weight)});
+   result.push_back(OP_GREATERTHAN);
+   return result;
+}
+
+std::string p2sh_address_from_redeem_script(const bytes& script, bitcoin_network network)
+{
+   bytes data;
+   // add version byte
+   switch (network) {
+   case(mainnet):
+      data.push_back(5);
+      break;
+   case(testnet):
+      data.push_back(196);
+      break;
+   case(regtest):
+      data.push_back(196);
+      break;
+   default:
+      FC_THROW("Unknown bitcoin network type [${type}]", ("type", network));
+   }
+   // add redeem script hash
+   fc::ripemd160 h = fc::ripemd160::hash(reinterpret_cast<const char*>(&script[0]), script.size());
+   data.insert(data.end(), h.data(), h.data() + h.data_size());
+   // calc control sum
+   fc::sha256 cs = fc::sha256::hash(fc::sha256::hash(reinterpret_cast<const char*>(&data[0]), data.size()));
+   // add first 4 bytes of control sum
+   data.insert(data.end(), cs.data(), cs.data() + 4);
+   // return base58 encoded data
+   return fc::to_base58(reinterpret_cast<const char*>(&data[0]), data.size());
+}
+
+}}
diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/bitcoin_utils.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/bitcoin_utils.hpp
new file mode 100644
index 00000000..4b69ff44
--- /dev/null
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/bitcoin_utils.hpp
@@ -0,0 +1,15 @@
+#pragma once
+#include <graphene/peerplays_sidechain/defs.hpp>
+
+namespace graphene { namespace peerplays_sidechain {
+
+enum bitcoin_network {
+   mainnet,
+   testnet,
+   regtest
+};
+
+bytes generate_redeem_script(fc::flat_map<fc::ecc::public_key, int> key_data);
+std::string p2sh_address_from_redeem_script(const bytes& script, bitcoin_network network = mainnet);
+
+}}
diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp
index 3bd94a49..ae1d222c 100644
--- a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp
@@ -18,7 +18,7 @@ enum class sidechain_type {
    peerplays
 };
 
-using bytes = std::vector<char>;
+using bytes = std::vector<unsigned char>;
 
 struct prev_out
 {