diff --git a/Cargo.lock b/Cargo.lock
index c0d14e318..f6b83fadc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5521,7 +5521,7 @@ dependencies = [
  "sc-tracing 3.0.0",
  "serde",
  "serde_json",
- "sp-application-crypto",
+ "sp-core",
  "tokio 1.9.0",
  "tracing",
  "tracing-test",
diff --git a/crates/robonode-server/Cargo.toml b/crates/robonode-server/Cargo.toml
index d01458303..906ac3437 100644
--- a/crates/robonode-server/Cargo.toml
+++ b/crates/robonode-server/Cargo.toml
@@ -17,7 +17,7 @@ rand = "0.7"
 reqwest = "0.11"
 sc-tracing = "3"
 serde = { version = "1", features = ["derive"] }
-sp-application-crypto = { git = "https://github.com/humanode-network/substrate", branch = "master" }
+sp-core = { git = "https://github.com/humanode-network/substrate", branch = "master" }
 tokio = { version = "1", features = ["full"] }
 tracing = "0.1"
 uuid = { version = "0.8", features = ["v4"] }
diff --git a/crates/robonode-server/src/http/tests.rs b/crates/robonode-server/src/http/tests.rs
index 6e60d367e..f2b71eba6 100644
--- a/crates/robonode-server/src/http/tests.rs
+++ b/crates/robonode-server/src/http/tests.rs
@@ -4,7 +4,6 @@ use mockall::predicate::*;
 use mockall::*;
 use primitives_auth_ticket::OpaqueAuthTicket;
 use primitives_liveness_data::OpaqueLivenessData;
-use sp_application_crypto::sp_core::hexdisplay::AsBytesRef;
 use warp::hyper::StatusCode;
 
 use crate::{
@@ -167,7 +166,7 @@ async fn it_works_authenticate() {
     let expected_response = serde_json::to_string(&provide_authenticate_response()).unwrap();
 
     assert_eq!(res.status(), StatusCode::OK);
-    assert_eq!(res.body().as_bytes_ref(), expected_response.as_bytes());
+    assert_eq!(res.body().as_ref(), expected_response.as_bytes());
 }
 
 #[tokio::test]
@@ -221,7 +220,7 @@ async fn it_works_get_facetec_session_token() {
     let expected_response = serde_json::to_string(&provide_facetec_session_token()).unwrap();
 
     assert_eq!(res.status(), StatusCode::OK);
-    assert_eq!(res.body().as_bytes_ref(), expected_response.as_bytes());
+    assert_eq!(res.body().as_ref(), expected_response.as_bytes());
 }
 
 #[tokio::test]
@@ -274,5 +273,5 @@ async fn it_works_get_facetec_device_sdk_params() {
     let expected_response = serde_json::to_string(&provide_facetec_device_sdk_params()).unwrap();
 
     assert_eq!(res.status(), StatusCode::OK);
-    assert_eq!(res.body().as_bytes_ref(), expected_response.as_bytes());
+    assert_eq!(res.body().as_ref(), expected_response.as_bytes());
 }
diff --git a/crates/robonode-server/src/lib.rs b/crates/robonode-server/src/lib.rs
index 6bd54e176..ee6820f88 100644
--- a/crates/robonode-server/src/lib.rs
+++ b/crates/robonode-server/src/lib.rs
@@ -35,7 +35,7 @@ pub fn init(
             execution_id,
             facetec: facetec_api_client,
             signer: robonode_keypair,
-            public_key_type: PhantomData::<validator_key::AuraPublic>,
+            public_key_type: PhantomData::<validator_key::SubstratePublic<sp_core::sr25519::Public>>,
         }),
         facetec_device_sdk_params,
     };
diff --git a/crates/robonode-server/src/validator_key.rs b/crates/robonode-server/src/validator_key.rs
index ed05d283f..9fb9e1ff1 100644
--- a/crates/robonode-server/src/validator_key.rs
+++ b/crates/robonode-server/src/validator_key.rs
@@ -1,17 +1,19 @@
 //! The validator key integration logic.
 
-use std::convert::TryFrom;
+use std::convert::{TryFrom, TryInto};
 
-use sp_application_crypto::Public;
-use sp_application_crypto::RuntimePublic;
+use sp_core::crypto::{CryptoType, Pair, Public};
 
 use crate::logic;
 
-/// A validator public key implemented via substrate's aura consensus key.
-pub struct AuraPublic(sp_application_crypto::sr25519::Public);
+/// A validator public key implemented via substrate crypto.
+pub struct SubstratePublic<T: CryptoType>(<T::Pair as Pair>::Public);
 
 #[async_trait::async_trait]
-impl logic::Verifier<Vec<u8>> for AuraPublic {
+impl<T: CryptoType> logic::Verifier<Vec<u8>> for SubstratePublic<T>
+where
+    <T::Pair as Pair>::Signature: for<'a> TryFrom<&'a [u8]>,
+{
     type Error = ();
 
     async fn verify<'a, D>(&self, data: D, signature: Vec<u8>) -> Result<bool, Self::Error>
@@ -19,26 +21,29 @@ impl logic::Verifier<Vec<u8>> for AuraPublic {
         D: AsRef<[u8]> + Send + 'a,
     {
         let data = data.as_ref();
-        let signature = sp_application_crypto::sr25519::Signature::try_from(signature.as_slice())?;
-        Ok(self.0.verify(&data, &signature))
+        let signature = signature.as_slice().try_into().map_err(|_| ())?;
+        Ok(T::Pair::verify(&signature, &data, &self.0))
     }
 }
 
-impl TryFrom<&[u8]> for AuraPublic {
+impl<T: CryptoType> TryFrom<&[u8]> for SubstratePublic<T>
+where
+    <T::Pair as Pair>::Public: for<'a> TryFrom<&'a [u8]>,
+{
     type Error = ();
 
     fn try_from(val: &[u8]) -> Result<Self, Self::Error> {
-        Ok(Self(sp_application_crypto::sr25519::Public::try_from(val)?))
+        Ok(Self(val.try_into().map_err(|_| ())?))
     }
 }
 
-impl From<AuraPublic> for Vec<u8> {
-    fn from(val: AuraPublic) -> Self {
-        val.as_ref().to_vec()
+impl<T: CryptoType> From<SubstratePublic<T>> for Vec<u8> {
+    fn from(val: SubstratePublic<T>) -> Self {
+        val.0.to_raw_vec()
     }
 }
 
-impl AsRef<[u8]> for AuraPublic {
+impl<T: CryptoType> AsRef<[u8]> for SubstratePublic<T> {
     fn as_ref(&self) -> &[u8] {
         self.0.as_slice()
     }