diff --git a/trin-core/src/jsonrpc/types.rs b/trin-core/src/jsonrpc/types.rs
index 67234e66b..8975b3c79 100644
--- a/trin-core/src/jsonrpc/types.rs
+++ b/trin-core/src/jsonrpc/types.rs
@@ -10,7 +10,7 @@ use validator::{Validate, ValidationError};
 use crate::{
     jsonrpc::endpoints::{HistoryEndpoint, StateEndpoint, TrinEndpoint},
     portalnet::types::{
-        content_key::OverlayContentKey,
+        content_key::{OverlayContentKey, RawContentKey},
         messages::{ByteList, CustomPayload, SszEnr},
     },
 };
@@ -274,7 +274,7 @@ impl TryFrom<[&Value; 2]> for OfferParams {
                     .collect();
 
                 if let Ok(content_keys) = content_keys {
-                    let content_keys: Result<Vec<Vec<u8>>, _> =
+                    let content_keys: Result<Vec<RawContentKey>, _> =
                         content_keys.iter().map(hex::decode).collect();
 
                     if let Ok(content_keys) = content_keys {
diff --git a/trin-core/src/portalnet/overlay.rs b/trin-core/src/portalnet/overlay.rs
index 082a7c040..0ed77cee8 100644
--- a/trin-core/src/portalnet/overlay.rs
+++ b/trin-core/src/portalnet/overlay.rs
@@ -15,9 +15,12 @@ use crate::portalnet::{
     },
 };
 
-use crate::utp::{
-    stream::{UtpListenerRequest, UtpSocket, BUF_SIZE},
-    trin_helpers::{UtpAccept, UtpMessage},
+use crate::{
+    portalnet::types::content_key::RawContentKey,
+    utp::{
+        stream::{UtpListenerRequest, UtpSocket, BUF_SIZE},
+        trin_helpers::{UtpAccept, UtpMessage},
+    },
 };
 use discv5::{
     enr::NodeId,
@@ -331,7 +334,7 @@ impl<TContentKey: OverlayContentKey + Send, TMetric: Metric + Send>
     /// Offer is also sent to nodes after FindContent (POKE)
     pub async fn send_offer(
         &self,
-        content_keys: Vec<Vec<u8>>,
+        content_keys: Vec<RawContentKey>,
         enr: Enr,
     ) -> Result<Accept, OverlayRequestError> {
         // Construct the request.
diff --git a/trin-core/src/portalnet/overlay_service.rs b/trin-core/src/portalnet/overlay_service.rs
index 2528ca851..a2efc48d3 100644
--- a/trin-core/src/portalnet/overlay_service.rs
+++ b/trin-core/src/portalnet/overlay_service.rs
@@ -19,7 +19,10 @@ use crate::{
     utp::stream::UtpListenerRequest,
 };
 
-use crate::utp::{stream::UtpPayload, trin_helpers::UtpStreamId};
+use crate::{
+    portalnet::types::content_key::RawContentKey,
+    utp::{stream::UtpPayload, trin_helpers::UtpStreamId},
+};
 use delay_map::HashSetDelay;
 use discv5::{
     enr::NodeId,
@@ -776,7 +779,7 @@ impl<TContentKey: OverlayContentKey + Send, TMetric: Metric + Send>
     }
 
     /// Process accepted uTP payload of the OFFER?ACCEPT stream
-    fn process_accept_utp_payload(&self, content_keys: Vec<Vec<u8>>, payload: UtpPayload) {
+    fn process_accept_utp_payload(&self, content_keys: Vec<RawContentKey>, payload: UtpPayload) {
         // TODO: Verify the payload, store the content and propagate gossip.
         debug!("DEBUG: Processing content keys: {content_keys:?}, with payload: {payload:?}");
     }
diff --git a/trin-core/src/portalnet/types/content_key.rs b/trin-core/src/portalnet/types/content_key.rs
index be40f3648..e6fc3dfe7 100644
--- a/trin-core/src/portalnet/types/content_key.rs
+++ b/trin-core/src/portalnet/types/content_key.rs
@@ -6,6 +6,9 @@ use ssz::{self, Decode, Encode};
 use ssz_derive::{Decode, Encode};
 use ssz_types::{typenum, FixedVector, VariableList};
 
+/// Raw overlay content key
+pub type RawContentKey = Vec<u8>;
+
 /// Types whose values represent keys to lookup content items in an overlay network.
 /// Keys are serializable.
 pub trait OverlayContentKey: Into<Vec<u8>> + TryFrom<Vec<u8>> + Clone {
diff --git a/trin-core/src/portalnet/types/messages.rs b/trin-core/src/portalnet/types/messages.rs
index b66274d62..5a2de62e9 100644
--- a/trin-core/src/portalnet/types/messages.rs
+++ b/trin-core/src/portalnet/types/messages.rs
@@ -17,7 +17,7 @@ use ssz_types::{typenum, BitList, VariableList};
 use thiserror::Error;
 use validator::ValidationError;
 
-use crate::portalnet::Enr;
+use crate::portalnet::{types::content_key::RawContentKey, Enr};
 
 pub type ByteList = VariableList<u8, typenum::U2048>;
 
@@ -492,7 +492,7 @@ impl TryInto<Value> for Content {
 
 #[derive(Debug, PartialEq, Clone, Encode, Decode)]
 pub struct Offer {
-    pub content_keys: Vec<Vec<u8>>,
+    pub content_keys: Vec<RawContentKey>,
 }
 
 #[derive(Debug, PartialEq, Clone, Encode, Decode)]
diff --git a/trin-core/src/utp/stream.rs b/trin-core/src/utp/stream.rs
index c02687947..91d170bfc 100644
--- a/trin-core/src/utp/stream.rs
+++ b/trin-core/src/utp/stream.rs
@@ -21,7 +21,10 @@ use tokio::{
 
 use crate::{
     locks::RwLoggingExt,
-    portalnet::types::messages::{ByteList, Content::Content, ProtocolId},
+    portalnet::types::{
+        content_key::RawContentKey,
+        messages::{ByteList, Content::Content, ProtocolId},
+    },
     utp::{
         packets::{ExtensionType, Packet, PacketType, HEADER_SIZE},
         time::{now_microseconds, Delay, Timestamp},
@@ -107,7 +110,7 @@ struct DelayDifferenceSample {
 /// and uTP listener
 pub enum UtpListenerRequest {
     /// Request to listen for Accept stream
-    AcceptStream(ConnId, Vec<Vec<u8>>),
+    AcceptStream(ConnId, Vec<RawContentKey>),
     /// Request to initialize uTP streram with remote node
     Connect(ConnId, NodeId, oneshot::Sender<anyhow::Result<UtpSocket>>),
     /// Request to listen for FindCOntent stream and send content data
diff --git a/trin-core/src/utp/trin_helpers.rs b/trin-core/src/utp/trin_helpers.rs
index 2f835faf2..3b434cdaf 100644
--- a/trin-core/src/utp/trin_helpers.rs
+++ b/trin-core/src/utp/trin_helpers.rs
@@ -1,7 +1,7 @@
 #![allow(dead_code)]
 // These are just some Trin helper functions
 
-use crate::portalnet::types::messages::Content;
+use crate::portalnet::types::{content_key::RawContentKey, messages::Content};
 use ssz_derive::{Decode, Encode};
 
 // These Utp impl are related to sending messages over uTP not the implementation itself or stream
@@ -57,7 +57,7 @@ pub enum UtpStreamId {
     FindContentStream,
     FindContentData(Content),
     OfferStream,
-    AcceptStream(Vec<Vec<u8>>),
+    AcceptStream(Vec<RawContentKey>),
 }
 
 #[cfg(test)]