diff --git a/lighthouse/utils/hash.rs b/lighthouse/utils/hash.rs
new file mode 100644
index 000000000..7b52eb9d1
--- /dev/null
+++ b/lighthouse/utils/hash.rs
@@ -0,0 +1,6 @@
+use super::blake2::blake2b::blake2b;
+
+pub fn canonical_hash(input: &[u8]) -> Vec<u8> {
+    let result = blake2b(64, &[], input);
+    result.as_bytes()[0..32].to_vec()
+}