diff --git a/src/activitypub/authentication.rs b/src/activitypub/authentication.rs
index dd961a2..a033d99 100644
--- a/src/activitypub/authentication.rs
+++ b/src/activitypub/authentication.rs
@@ -10,7 +10,7 @@ use crate::http_signatures::verify::{
     verify_http_signature,
     HttpSignatureVerificationError as HttpSignatureError,
 };
-use crate::identity::{did::Did, signatures::SignatureType};
+use crate::identity::{did::Did, signatures::ProofType};
 use crate::json_signatures::verify::{
     get_json_signature,
     verify_ed25519_json_signature,
@@ -151,7 +151,7 @@ pub async fn verify_signed_activity(
 
     match signature_data.signer {
         JsonSigner::ActorKeyId(ref key_id) => {
-            if signature_data.signature_type != SignatureType::JcsRsaSignature {
+            if signature_data.signature_type != ProofType::JcsRsaSignature {
                 return Err(AuthenticationError::InvalidJsonSignatureType);
             };
             let signer_id = key_id_to_actor_id(key_id)?;
@@ -169,7 +169,7 @@ pub async fn verify_signed_activity(
                 return Err(AuthenticationError::UnexpectedSigner);
             };
             match signature_data.signature_type {
-                SignatureType::JcsEd25519Signature => {
+                ProofType::JcsEd25519Signature => {
                     let did_key = match did {
                         Did::Key(did_key) => did_key,
                         _ => return Err(AuthenticationError::InvalidJsonSignatureType),
@@ -180,7 +180,7 @@ pub async fn verify_signed_activity(
                         &signature_data.signature,
                     )?;
                 },
-                SignatureType::JcsEip191Signature => {
+                ProofType::JcsEip191Signature => {
                     let did_pkh = match did {
                         Did::Pkh(did_pkh) => did_pkh,
                         _ => return Err(AuthenticationError::InvalidJsonSignatureType),
diff --git a/src/identity/signatures.rs b/src/identity/signatures.rs
index fa60f1b..3dfe36f 100644
--- a/src/identity/signatures.rs
+++ b/src/identity/signatures.rs
@@ -1,4 +1,4 @@
-/// Signature types
+/// Proof types
 use std::str::FromStr;
 
 use crate::errors::ConversionError;
@@ -28,17 +28,17 @@ pub const PROOF_TYPE_JCS_EIP191_LEGACY: &str ="JcsEip191Signature2022";
 pub const PROOF_TYPE_JCS_ED25519: &str = "MitraJcsEd25519Signature2022";
 
 #[derive(Debug, PartialEq)]
-pub enum SignatureType {
+pub enum ProofType {
     JcsEip191Signature,
     JcsEd25519Signature,
     JcsRsaSignature,
 }
 
-impl FromStr for SignatureType {
+impl FromStr for ProofType {
     type Err = ConversionError;
 
     fn from_str(value: &str) -> Result<Self, Self::Err> {
-        let signature_type = match value {
+        let proof_type = match value {
             PROOF_TYPE_JCS_EIP191 => Self::JcsEip191Signature,
             PROOF_TYPE_JCS_EIP191_LEGACY => Self::JcsEip191Signature,
             PROOF_TYPE_JCS_ED25519 => Self::JcsEd25519Signature,
@@ -46,6 +46,6 @@ impl FromStr for SignatureType {
             PROOF_TYPE_JCS_RSA_LEGACY => Self::JcsRsaSignature,
             _ => return Err(ConversionError),
         };
-        Ok(signature_type)
+        Ok(proof_type)
     }
 }
diff --git a/src/json_signatures/verify.rs b/src/json_signatures/verify.rs
index 91a94d5..0570235 100644
--- a/src/json_signatures/verify.rs
+++ b/src/json_signatures/verify.rs
@@ -19,7 +19,7 @@ use crate::identity::{
     did_key::DidKey,
     did_pkh::DidPkh,
     minisign::verify_ed25519_signature,
-    signatures::SignatureType,
+    signatures::ProofType,
 };
 use super::create::{
     IntegrityProof,
@@ -34,7 +34,7 @@ pub enum JsonSigner {
 }
 
 pub struct SignatureData {
-    pub signature_type: SignatureType,
+    pub signature_type: ProofType,
     pub signer: JsonSigner,
     pub message: String,
     pub signature: Vec<u8>,
@@ -156,7 +156,7 @@ mod tests {
         let signature_data = get_json_signature(&signed_object).unwrap();
         assert_eq!(
             signature_data.signature_type,
-            SignatureType::JcsEip191Signature,
+            ProofType::JcsEip191Signature,
         );
         let expected_signer = JsonSigner::Did(Did::Pkh(DidPkh::from_address(
             &Currency::Ethereum,
@@ -192,7 +192,7 @@ mod tests {
         let signature_data = get_json_signature(&signed_object).unwrap();
         assert_eq!(
             signature_data.signature_type,
-            SignatureType::JcsRsaSignature,
+            ProofType::JcsRsaSignature,
         );
         let expected_signer = JsonSigner::ActorKeyId(signer_key_id.to_string());
         assert_eq!(signature_data.signer, expected_signer);