diff --git a/Cargo.lock b/Cargo.lock
index 1cd8383d8..df305aa8c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -240,6 +240,7 @@ dependencies = [
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.2.0",
  "ethcore-devtools 1.2.0",
+ "ethcore-ipc 1.2.0",
  "ethcore-ipc-codegen 1.2.0",
  "ethcore-util 1.2.0",
  "ethjson 0.1.0",
diff --git a/ethcore/Cargo.toml b/ethcore/Cargo.toml
index 1b581959d..d0b1927f6 100644
--- a/ethcore/Cargo.toml
+++ b/ethcore/Cargo.toml
@@ -28,6 +28,7 @@ lazy_static = "0.1"
 ethcore-devtools = { path = "../devtools" }
 ethjson = { path = "../json" }
 bloomchain = "0.1"
+"ethcore-ipc" = { path = "../ipc/rpc" }
 
 [features]
 jit = ["evmjit"]
diff --git a/ethcore/src/lib.rs b/ethcore/src/lib.rs
index b18efa54d..949b4100d 100644
--- a/ethcore/src/lib.rs
+++ b/ethcore/src/lib.rs
@@ -85,6 +85,7 @@ extern crate num_cpus;
 extern crate crossbeam;
 extern crate ethjson;
 extern crate bloomchain;
+extern crate ethcore_ipc as ipc;
 
 #[cfg(test)] extern crate ethcore_devtools as devtools;
 #[cfg(feature = "jit" )] extern crate evmjit;
diff --git a/ethcore/src/types/block_status.rs b/ethcore/src/types/block_status.rs
index 60776748c..ca0f47227 100644
--- a/ethcore/src/types/block_status.rs
+++ b/ethcore/src/types/block_status.rs
@@ -16,8 +16,11 @@
 
 //! Block status description module
 
+use ipc::binary::BinaryConvertError;
+use std::collections::VecDeque;
+
 /// General block status
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Debug, Eq, PartialEq, Binary)]
 pub enum BlockStatus {
 	/// Part of the blockchain.
 	InChain,
diff --git a/ethcore/src/types/blockchain_info.rs b/ethcore/src/types/blockchain_info.rs
index aacf77baf..076225b27 100644
--- a/ethcore/src/types/blockchain_info.rs
+++ b/ethcore/src/types/blockchain_info.rs
@@ -14,11 +14,14 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use util::*;
+use util::numbers::*;
 use header::BlockNumber;
+use ipc::binary::BinaryConvertError;
+use std::mem;
+use std::collections::VecDeque;
 
 /// Information about the blockchain gathered together.
-#[derive(Debug)]
+#[derive(Debug, Binary)]
 pub struct BlockChainInfo {
 	/// Blockchain difficulty.
 	pub total_difficulty: U256,
diff --git a/util/bigint/src/uint.rs b/util/bigint/src/uint.rs
index be9941589..f87b494a9 100644
--- a/util/bigint/src/uint.rs
+++ b/util/bigint/src/uint.rs
@@ -517,7 +517,7 @@ pub trait Uint: Sized + Default + FromStr + From<u64> + fmt::Debug + fmt::Displa
 	/// Return single byte
 	fn byte(&self, index: usize) -> u8;
 	/// Get this Uint as slice of bytes
-	fn to_bytes(&self, bytes: &mut[u8]);
+	fn to_raw_bytes(&self, bytes: &mut[u8]);
 
 	/// Create `Uint(10**n)`
 	fn exp10(n: usize) -> Self;
@@ -621,7 +621,7 @@ macro_rules! construct_uint {
 				(arr[index / 8] >> (((index % 8)) * 8)) as u8
 			}
 
-			fn to_bytes(&self, bytes: &mut[u8]) {
+			fn to_raw_bytes(&self, bytes: &mut[u8]) {
 				assert!($n_words * 8 == bytes.len());
 				let &$name(ref arr) = self;
 				for i in 0..bytes.len() {
@@ -780,7 +780,7 @@ macro_rules! construct_uint {
 			where S: serde::Serializer {
 				let mut hex = "0x".to_owned();
 				let mut bytes = [0u8; 8 * $n_words];
-				self.to_bytes(&mut bytes);
+				self.to_raw_bytes(&mut bytes);
 				let len = cmp::max((self.bits() + 7) / 8, 1);
 				hex.push_str(bytes[bytes.len() - len..].to_hex().as_ref());
 				serializer.serialize_str(hex.as_ref())
@@ -1482,7 +1482,7 @@ mod tests {
 		let hex = "8090a0b0c0d0e0f00910203040506077583a2cf8264910e1436bda32571012f0";
 		let uint = U256::from_str(hex).unwrap();
 		let mut bytes = [0u8; 32];
-		uint.to_bytes(&mut bytes);
+		uint.to_raw_bytes(&mut bytes);
 		let uint2 = U256::from(&bytes[..]);
 		assert_eq!(uint, uint2);
 	}
diff --git a/util/src/hash.rs b/util/src/hash.rs
index 69ed17c79..e1b82b14c 100644
--- a/util/src/hash.rs
+++ b/util/src/hash.rs
@@ -517,7 +517,7 @@ impl From<U256> for H256 {
 	fn from(value: U256) -> H256 {
 		unsafe {
 			let mut ret: H256 = ::std::mem::uninitialized();
-			value.to_bytes(&mut ret);
+			value.to_raw_bytes(&mut ret);
 			ret
 		}
 	}
@@ -527,7 +527,7 @@ impl<'_> From<&'_ U256> for H256 {
 	fn from(value: &'_ U256) -> H256 {
 		unsafe {
 			let mut ret: H256 = ::std::mem::uninitialized();
-			value.to_bytes(&mut ret);
+			value.to_raw_bytes(&mut ret);
 			ret
 		}
 	}