diff --git a/ethcore/src/blooms/bloom.rs b/ethcore/src/blooms/bloom.rs
index 29f055c10..83d898ab5 100644
--- a/ethcore/src/blooms/bloom.rs
+++ b/ethcore/src/blooms/bloom.rs
@@ -20,7 +20,7 @@ use util::HeapSizeOf;
 use basic_types::LogBloom;
 
 /// Helper structure representing bloom of the trace.
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub struct Bloom(LogBloom);
 
 impl From<LogBloom> for Bloom {
diff --git a/ethcore/src/blooms/bloom_group.rs b/ethcore/src/blooms/bloom_group.rs
index 6fa1d0761..8e2b87189 100644
--- a/ethcore/src/blooms/bloom_group.rs
+++ b/ethcore/src/blooms/bloom_group.rs
@@ -20,7 +20,7 @@ use util::HeapSizeOf;
 use super::Bloom;
 
 /// Represents group of X consecutive blooms.
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub struct BloomGroup {
 	blooms: Vec<Bloom>,
 }
diff --git a/ethcore/src/trace/db.rs b/ethcore/src/trace/db.rs
index cac96bcbe..8c7d6c8c9 100644
--- a/ethcore/src/trace/db.rs
+++ b/ethcore/src/trace/db.rs
@@ -15,7 +15,6 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Trace database.
-use std::ptr;
 use std::ops::{Deref, DerefMut};
 use std::collections::HashMap;
 use std::sync::Arc;
@@ -47,9 +46,7 @@ impl Key<BlockTraces> for H256 {
 	fn key(&self) -> H264 {
 		let mut result = H264::default();
 		result[0] = TraceDBIndex::BlockTraces as u8;
-		unsafe {
-			ptr::copy(self.as_ptr(), result.as_mut_ptr().offset(1), 32);
-		}
+		result[1..33].copy_from_slice(self);
 		result
 	}
 }
@@ -84,9 +81,9 @@ impl Key<blooms::BloomGroup> for TraceGroupPosition {
 		result[0] = TraceDBIndex::BloomGroups as u8;
 		result[1] = self.0.level;
 		result[2] = self.0.index as u8;
-		result[3] = (self.0.index << 8) as u8;
-		result[4] = (self.0.index << 16) as u8;
-		result[5] = (self.0.index << 24) as u8;
+		result[3] = (self.0.index >> 8) as u8;
+		result[4] = (self.0.index >> 16) as u8;
+		result[5] = (self.0.index >> 24) as u8;
 		TraceGroupKey(result)
 	}
 }
diff --git a/ethcore/src/types/trace_types/filter.rs b/ethcore/src/types/trace_types/filter.rs
index c02a15c03..d57efa5f3 100644
--- a/ethcore/src/types/trace_types/filter.rs
+++ b/ethcore/src/types/trace_types/filter.rs
@@ -30,7 +30,7 @@ use std::collections::VecDeque;
 /// Addresses filter.
 ///
 /// Used to create bloom possibilities and match filters.
-#[derive(Binary)]
+#[derive(Debug, Binary)]
 pub struct AddressesFilter {
 	list: Vec<Address>
 }
@@ -76,7 +76,7 @@ impl AddressesFilter {
 	}
 }
 
-#[derive(Binary)]
+#[derive(Debug, Binary)]
 /// Traces filter.
 pub struct Filter {
 	/// Block range.
diff --git a/rpc/src/v1/types/trace.rs b/rpc/src/v1/types/trace.rs
index b9ce8a3ea..59da9be80 100644
--- a/rpc/src/v1/types/trace.rs
+++ b/rpc/src/v1/types/trace.rs
@@ -357,7 +357,7 @@ pub struct LocalizedTrace {
 	/// Result
 	result: Res,
 	/// Trace address
-	#[serde(rename="traceH160")]
+	#[serde(rename="traceAddress")]
 	trace_address: Vec<U256>,
 	/// Subtraces
 	subtraces: U256,
@@ -443,7 +443,7 @@ mod tests {
 			block_hash: H256::from(14),
 		};
 		let serialized = serde_json::to_string(&t).unwrap();
-		assert_eq!(serialized, r#"{"action":{"call":{"from":"0x0000000000000000000000000000000000000004","to":"0x0000000000000000000000000000000000000005","value":"0x06","gas":"0x07","input":"0x1234"}},"result":{"call":{"gasUsed":"0x08","output":"0x5678"}},"traceH160":["0x0a"],"subtraces":"0x01","transactionPosition":"0x0b","transactionHash":"0x000000000000000000000000000000000000000000000000000000000000000c","blockNumber":"0x0d","blockHash":"0x000000000000000000000000000000000000000000000000000000000000000e"}"#);
+		assert_eq!(serialized, r#"{"action":{"call":{"from":"0x0000000000000000000000000000000000000004","to":"0x0000000000000000000000000000000000000005","value":"0x06","gas":"0x07","input":"0x1234"}},"result":{"call":{"gasUsed":"0x08","output":"0x5678"}},"traceAddress":["0x0a"],"subtraces":"0x01","transactionPosition":"0x0b","transactionHash":"0x000000000000000000000000000000000000000000000000000000000000000c","blockNumber":"0x0d","blockHash":"0x000000000000000000000000000000000000000000000000000000000000000e"}"#);
 	}
 
 	#[test]