diff --git a/node/src/lib.rs b/node/src/lib.rs
index 70b5c20f9..4ae22bd5e 100644
--- a/node/src/lib.rs
+++ b/node/src/lib.rs
@@ -7,4 +7,4 @@ pub mod cli;
 pub mod rpc;
 pub mod service;
 
-pub const NODE_VERSION: &str = "2.3.2";
+pub const NODE_VERSION: &str = "2.3.3";
diff --git a/rpc/kate-rpc/src/justifications.rs b/rpc/kate-rpc/src/justifications.rs
index 1072164ea..fc5e88705 100644
--- a/rpc/kate-rpc/src/justifications.rs
+++ b/rpc/kate-rpc/src/justifications.rs
@@ -172,7 +172,7 @@ impl serde::Serialize for Signature {
 	where
 		S: serde::Serializer,
 	{
-		serializer.serialize_str(&const_hex::encode(&self.0))
+		serializer.serialize_str(&const_hex::encode_prefixed(&self.0))
 	}
 }
 
@@ -181,8 +181,9 @@ impl<'de> serde::Deserialize<'de> for Signature {
 	where
 		D: serde::Deserializer<'de>,
 	{
-		let signature_hex = const_hex::decode(&String::deserialize(deserializer)?)
-			.map_err(|e| serde::de::Error::custom(format!("{:?}", e)))?;
+		let signature_hex =
+			const_hex::decode(String::deserialize(deserializer)?.trim_start_matches("0x"))
+				.map_err(|e| serde::de::Error::custom(format!("{:?}", e)))?;
 		let signature: [u8; 64usize] = signature_hex
 			.try_into()
 			.map_err(|e| serde::de::Error::custom(format!("{:?}", e)))?;
diff --git a/rpc/kate-rpc/src/system.rs b/rpc/kate-rpc/src/system.rs
index 30a128866..4fa4bdd7f 100644
--- a/rpc/kate-rpc/src/system.rs
+++ b/rpc/kate-rpc/src/system.rs
@@ -8,6 +8,7 @@ use jsonrpsee::{
 };
 use sc_client_api::BlockBackend;
 use sp_api::ProvideRuntimeApi;
+use sp_blockchain::HeaderBackend;
 use sp_core::{Blake2Hasher, Hasher, H256};
 use sp_runtime::traits::{Block as BlockT, Header as HeaderT};
 use std::{
@@ -30,6 +31,15 @@ pub trait Api {
 		block_id: fetch_extrinsics_v1::BlockId,
 		options: Option<fetch_extrinsics_v1::Options>,
 	) -> RpcResult<fetch_extrinsics_v1::ApiResult>;
+
+	#[method(name = "system_latestBlockInfo")]
+	async fn latest_block_info(&self, use_best_block: Option<bool>) -> RpcResult<types::BlockInfo>;
+
+	#[method(name = "system_latestChainInfo")]
+	async fn latest_chain_info(&self) -> RpcResult<types::ChainInfo>;
+
+	#[method(name = "system_getBlockNumber")]
+	async fn block_get_block_number(&self, hash: H256) -> RpcResult<Option<u32>>;
 }
 
 pub struct Rpc<C, Block>
@@ -45,6 +55,7 @@ where
 impl<C, Block> Rpc<C, Block>
 where
 	C: ProvideRuntimeApi<Block> + Send + Sync + 'static,
+	C: HeaderBackend<Block>,
 	C::Api: frame_system_rpc_runtime_api::SystemEventsApi<Block>,
 	Block: BlockT,
 	<Block as BlockT>::Hash: From<H256>,
@@ -92,10 +103,12 @@ impl<'a, C, Block> ApiServer for Rpc<C, Block>
 where
 	C: ProvideRuntimeApi<Block> + Send + Sync + 'static,
 	C: BlockBackend<Block>,
+	C: HeaderBackend<Block>,
 	C::Api: frame_system_rpc_runtime_api::SystemEventsApi<Block>,
 	Block: BlockT<Extrinsic = OpaqueExtrinsic>,
 	<Block as BlockT>::Hash: From<H256> + Into<H256>,
 	<<Block as BlockT>::Header as HeaderT>::Number: From<u32>,
+	<<Block as BlockT>::Header as HeaderT>::Number: Into<u32>,
 {
 	async fn fetch_events_v1(
 		&self,
@@ -221,6 +234,143 @@ where
 
 		Ok(found_extrinsics)
 	}
+
+	async fn latest_block_info(&self, use_best_block: Option<bool>) -> RpcResult<types::BlockInfo> {
+		let info = self.client.info();
+		let use_best_block = use_best_block.unwrap_or(true);
+		if use_best_block {
+			return Ok(types::BlockInfo {
+				hash: info.best_hash.into(),
+				height: info.best_number.into(),
+			});
+		}
+
+		Ok(types::BlockInfo {
+			hash: info.finalized_hash.into(),
+			height: info.finalized_number.into(),
+		})
+	}
+
+	async fn latest_chain_info(&self) -> RpcResult<types::ChainInfo> {
+		let info = self.client.info();
+		return Ok(types::ChainInfo {
+			best_hash: info.best_hash.into(),
+			best_height: info.best_number.into(),
+			finalized_hash: info.finalized_hash.into(),
+			finalized_height: info.finalized_number.into(),
+			genesis_hash: info.genesis_hash.into(),
+		});
+	}
+
+	async fn block_get_block_number(&self, hash: H256) -> RpcResult<Option<u32>> {
+		let result = self
+			.client
+			.block_number_from_id(&sp_runtime::generic::BlockId::Hash(hash.into()))
+			.map_err(|err| Error::Other.into_error_object(err.to_string()))?;
+		Ok(result.map(|x| x.into()))
+	}
+}
+
+pub mod types {
+	use super::*;
+
+	#[derive(Clone, serde::Serialize, serde::Deserialize)]
+	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+	#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+	pub struct BlockInfo {
+		#[cfg_attr(feature = "ts", ts(as = "String"))]
+		pub hash: H256,
+		pub height: u32,
+	}
+
+	#[derive(Clone, serde::Serialize, serde::Deserialize)]
+	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+	#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+	pub struct ChainInfo {
+		#[cfg_attr(feature = "ts", ts(as = "String"))]
+		pub best_hash: H256,
+		pub best_height: u32,
+		#[cfg_attr(feature = "ts", ts(as = "String"))]
+		pub finalized_hash: H256,
+		pub finalized_height: u32,
+		#[cfg_attr(feature = "ts", ts(as = "String"))]
+		pub genesis_hash: H256,
+	}
+
+	#[cfg(feature = "ts")]
+	pub mod ts_types {
+		use super::*;
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+		struct RpcRequestBlockInfo {
+			id: u32,
+			jsonrpc: String,
+			method: String,
+			params: (bool,),
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+		struct RpcResponseBlockInfo {
+			jsonrpc: String,
+			result: Option<BlockInfo>,
+			error: Option<Error>,
+			id: u32,
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+		struct RpcRequestChainInfo {
+			id: u32,
+			jsonrpc: String,
+			method: String,
+			params: (),
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+		struct RpcResponseChainInfo {
+			jsonrpc: String,
+			result: Option<ChainInfo>,
+			error: Option<Error>,
+			id: u32,
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+		struct RpcRequestBlockNumber {
+			id: u32,
+			jsonrpc: String,
+			method: String,
+			#[cfg_attr(feature = "ts", ts(as = "(String,)"))]
+			params: (H256,),
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+		struct RpcResponseBlockNumber {
+			jsonrpc: String,
+			result: Option<u32>,
+			error: Option<Error>,
+			id: u32,
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "Types.ts"))]
+		pub struct Error {
+			code: i32,
+			message: String,
+			data: Option<String>,
+		}
+	}
 }
 
 pub mod fetch_events_v1 {
@@ -230,15 +380,31 @@ pub mod fetch_events_v1 {
 	};
 	pub type ApiResult = Vec<GroupedRuntimeEvents>;
 
-	#[allow(dead_code)]
-	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
-	#[cfg_attr(feature = "ts", ts(export, export_to = "FetchEvents.ts"))]
-	struct ApiResultTS(pub Vec<GroupedRuntimeEvents>);
-
-	#[allow(dead_code)]
-	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
-	#[cfg_attr(feature = "ts", ts(export, export_to = "FetchEvents.ts"))]
-	struct ApiParamsTS((String, Option<Options>));
+	#[cfg(feature = "ts")]
+	pub mod ts_types {
+		use super::super::types::ts_types::Error;
+		use super::*;
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "FetchEvents.ts"))]
+		struct RpcRequest {
+			id: u32,
+			jsonrpc: String,
+			method: String,
+			params: (String, Option<Options>),
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "FetchEvents.ts"))]
+		struct RpcResponse {
+			jsonrpc: String,
+			result: Option<Vec<GroupedRuntimeEvents>>,
+			error: Option<Error>,
+			id: u32,
+		}
+	}
 
 	#[derive(Clone, serde::Serialize, serde::Deserialize)]
 	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
@@ -300,15 +466,31 @@ pub mod fetch_extrinsics_v1 {
 
 	pub type ApiResult = Vec<ExtrinsicInformation>;
 
-	#[allow(dead_code)]
-	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
-	#[cfg_attr(feature = "ts", ts(export, export_to = "FetchExtrinsics.ts"))]
-	struct ApiResultTS(pub Vec<ExtrinsicInformation>);
-
-	#[allow(dead_code)]
-	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
-	#[cfg_attr(feature = "ts", ts(export, export_to = "FetchExtrinsics.ts"))]
-	struct ApiParamsTS(pub (BlockId, Option<Options>));
+	#[cfg(feature = "ts")]
+	pub mod ts_types {
+		use super::super::types::ts_types::Error;
+		use super::*;
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "FetchExtrinsics.ts"))]
+		struct RpcRequest {
+			id: u32,
+			jsonrpc: String,
+			method: String,
+			params: (BlockId, Option<Options>),
+		}
+
+		#[allow(dead_code)]
+		#[cfg_attr(feature = "ts", derive(ts_rs::TS))]
+		#[cfg_attr(feature = "ts", ts(export, export_to = "FetchExtrinsics.ts"))]
+		struct RpcResponse {
+			jsonrpc: String,
+			result: Option<Vec<ExtrinsicInformation>>,
+			error: Option<Error>,
+			id: u32,
+		}
+	}
 
 	#[derive(Clone, Serialize, Deserialize)]
 	#[cfg_attr(feature = "ts", derive(ts_rs::TS))]