diff --git a/src/data_types/w3c/credential.rs b/src/data_types/w3c/credential.rs
index da10c65e..e04c9d75 100644
--- a/src/data_types/w3c/credential.rs
+++ b/src/data_types/w3c/credential.rs
@@ -2,6 +2,7 @@ use chrono::{DateTime, Utc};
 use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
 use serde_json::Value;
 use std::collections::{HashMap, HashSet};
+use std::fmt::{Display, Formatter};
 use std::string::ToString;
 use zeroize::Zeroize;
 
@@ -201,13 +202,13 @@ pub enum CredentialStatusType {
     Other(String),
 }
 
-impl ToString for CredentialStatusType {
-    fn to_string(&self) -> String {
+impl Display for CredentialStatusType {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
         match self {
             CredentialStatusType::AnonCredsCredentialStatusList2023 => {
-                "AnonCredsCredentialStatusList2023".to_string()
+                f.write_str("AnonCredsCredentialStatusList2023")
             }
-            CredentialStatusType::Other(other) => other.to_string(),
+            CredentialStatusType::Other(other) => f.write_str(other),
         }
     }
 }
diff --git a/src/data_types/w3c/presentation_proof.rs b/src/data_types/w3c/presentation_proof.rs
index 5105fb73..a1fb3e5c 100644
--- a/src/data_types/w3c/presentation_proof.rs
+++ b/src/data_types/w3c/presentation_proof.rs
@@ -9,7 +9,6 @@ use std::collections::HashSet;
 pub struct CredentialPresentationProof {
     #[serde(rename = "type")]
     pub type_: PresentationProofType,
-    /// Uniform Resource Identifier - https://www.w3.org/TR/vc-data-model/#dfn-uri
     // FIXME: Consider either removing or moving under proof_value
     //  In fact, it's only needed to make attributes validation on the verifier side
     //  Revealed attributes and predicates can be restored from credential subject, but not unrevealed attributes
diff --git a/src/services/helpers.rs b/src/services/helpers.rs
index 244a729c..59bb6d66 100644
--- a/src/services/helpers.rs
+++ b/src/services/helpers.rs
@@ -251,7 +251,7 @@ pub fn get_non_revoked_interval(
 
 impl RequestedProof {
     // get list of revealed attributes per credential
-    pub(crate) fn attribute_referents(&self, index: u32) -> HashSet<String> {
+    pub(crate) fn get_attribute_referents(&self, index: u32) -> HashSet<String> {
         let mut referents = HashSet::new();
         for (referent, into) in self.revealed_attrs.iter() {
             if into.sub_proof_index == index {
@@ -267,7 +267,7 @@ impl RequestedProof {
     }
 
     // get list of revealed predicates per credential
-    pub(crate) fn predicate_referents(&self, index: u32) -> HashSet<String> {
+    pub(crate) fn get_predicate_referents(&self, index: u32) -> HashSet<String> {
         let mut referents = HashSet::new();
         for (referent, info) in self.predicates.iter() {
             if info.sub_proof_index == index {
diff --git a/src/services/issuer.rs b/src/services/issuer.rs
index c414d36e..44e1cf61 100644
--- a/src/services/issuer.rs
+++ b/src/services/issuer.rs
@@ -714,7 +714,7 @@ pub fn create_credential(
             );
 
     let (credential_signature, signature_correctness_proof, rev_reg_id, rev_reg, witness) =
-        CLCredentialIssuer::init(cred_def, cred_def_private)?.create_credential(
+        CLCredentialIssuer::new(cred_def, cred_def_private).create_credential(
             cred_offer,
             cred_request,
             &cred_values,
@@ -746,14 +746,14 @@ pub(crate) struct CLCredentialIssuer<'a> {
 }
 
 impl<'a> CLCredentialIssuer<'a> {
-    pub(crate) fn init(
+    pub(crate) fn new(
         cred_def: &'a CredentialDefinition,
         cred_def_private: &'a CredentialDefinitionPrivate,
-    ) -> Result<CLCredentialIssuer<'a>> {
-        Ok(CLCredentialIssuer {
+    ) -> CLCredentialIssuer<'a> {
+        CLCredentialIssuer {
             cred_def,
             cred_def_private,
-        })
+        }
     }
 
     #[allow(clippy::type_complexity)]
diff --git a/src/services/prover.rs b/src/services/prover.rs
index 8a09a4a4..61cbb737 100644
--- a/src/services/prover.rs
+++ b/src/services/prover.rs
@@ -252,7 +252,7 @@ pub fn process_credential(
     trace!("process_credential >>> credential: {:?}, cred_request_metadata: {:?}, link_secret: {:?}, cred_def: {:?}, rev_reg_def: {:?}",
             credential, cred_request_metadata, secret!(&link_secret), cred_def, rev_reg_def);
 
-    CLCredentialProver::init(link_secret)?.process_credential(
+    CLCredentialProver::new(link_secret).process_credential(
         &mut credential.signature,
         &credential.signature_correctness_proof,
         &credential.values,
@@ -417,7 +417,7 @@ pub fn create_presentation(
     let mut sub_proof_index = 0;
     let mut identifiers: Vec<Identifier> = Vec::with_capacity(credentials.len());
 
-    let mut proof_builder = CLProofBuilder::init(pres_req_val, schemas, cred_defs)?;
+    let mut proof_builder = CLProofBuilder::new(pres_req_val, schemas, cred_defs)?;
 
     for present in credentials.0 {
         if present.is_empty() {
@@ -770,8 +770,8 @@ pub(crate) struct CLCredentialProver<'a> {
 }
 
 impl<'a> CLCredentialProver<'a> {
-    pub(crate) fn init(link_secret: &'a LinkSecret) -> Result<CLCredentialProver<'a>> {
-        Ok(CLCredentialProver { link_secret })
+    pub(crate) fn new(link_secret: &'a LinkSecret) -> CLCredentialProver<'a> {
+        CLCredentialProver { link_secret }
     }
 
     #[allow(clippy::too_many_arguments)]
@@ -821,7 +821,7 @@ pub(crate) struct CLProofBuilder<'a> {
 }
 
 impl<'a> CLProofBuilder<'a> {
-    pub(crate) fn init(
+    pub(crate) fn new(
         presentation_request: &'a PresentationRequestPayload,
         schemas: &'a HashMap<SchemaId, Schema>,
         cred_defs: &'a HashMap<CredentialDefinitionId, CredentialDefinition>,
@@ -862,7 +862,7 @@ impl<'a> CLProofBuilder<'a> {
 
         let (attrs_for_credential, attrs_nonrevoked_interval) = self
             .presentation_request
-            .get_requested_attributes(&present.requested_attributes())?;
+            .get_requested_attributes(&present.revealed_attributes())?;
         let (predicates_for_credential, pred_nonrevoked_interval) = self
             .presentation_request
             .get_requested_predicates(&present.requested_predicates)?;
@@ -936,8 +936,6 @@ impl<'a> CLProofBuilder<'a> {
 mod tests {
     use super::*;
 
-    // use crate::data_types::pres_request::PredicateTypes;
-
     macro_rules! hashmap {
         ($( $key: expr => $val: expr ),*) => {
             {
diff --git a/src/services/types.rs b/src/services/types.rs
index 53148c26..510eb0ec 100644
--- a/src/services/types.rs
+++ b/src/services/types.rs
@@ -161,7 +161,7 @@ impl<T> PresentCredential<'_, T> {
         self.requested_attributes.is_empty() && self.requested_predicates.is_empty()
     }
 
-    pub(crate) fn requested_attributes(&self) -> HashSet<String> {
+    pub(crate) fn revealed_attributes(&self) -> HashSet<String> {
         let mut referents = HashSet::new();
         for (referent, revealed) in self.requested_attributes.iter() {
             if *revealed {
diff --git a/src/services/verifier.rs b/src/services/verifier.rs
index 11ca11cd..7332eee4 100644
--- a/src/services/verifier.rs
+++ b/src/services/verifier.rs
@@ -89,7 +89,7 @@ pub fn verify_presentation(
         &received_self_attested_attrs,
     )?;
 
-    let mut proof_verifier = CLProofVerifier::init(
+    let mut proof_verifier = CLProofVerifier::new(
         pres_req,
         schemas,
         cred_defs,
@@ -102,10 +102,10 @@ pub fn verify_presentation(
 
         let attributes = presentation
             .requested_proof
-            .attribute_referents(sub_proof_index as u32);
+            .get_attribute_referents(sub_proof_index as u32);
         let predicates = presentation
             .requested_proof
-            .predicate_referents(sub_proof_index as u32);
+            .get_predicate_referents(sub_proof_index as u32);
 
         proof_verifier.add_sub_proof(
             &attributes,
@@ -760,7 +760,7 @@ pub(crate) struct CLProofVerifier<'a> {
 }
 
 impl<'a> CLProofVerifier<'a> {
-    pub(crate) fn init(
+    pub(crate) fn new(
         presentation_request: &'a PresentationRequestPayload,
         schemas: &'a HashMap<SchemaId, Schema>,
         cred_defs: &'a HashMap<CredentialDefinitionId, CredentialDefinition>,
diff --git a/src/services/w3c/helpers.rs b/src/services/w3c/helpers.rs
index 974e966e..78b8a028 100644
--- a/src/services/w3c/helpers.rs
+++ b/src/services/w3c/helpers.rs
@@ -18,7 +18,7 @@ impl W3CCredential {
             .ok_or_else(|| err_msg!("Credential attribute {} not found", requested_attribute))
     }
 
-    pub(crate) fn attributes(&self) -> HashMap<String, String> {
+    pub(crate) fn get_attributes(&self) -> HashMap<String, String> {
         let mut attributes: HashMap<String, String> = HashMap::new();
         for (name, attribute) in self.credential_subject.attributes.0.iter() {
             if let CredentialAttributeValue::Attribute(attribute) = attribute {
diff --git a/src/services/w3c/issuer.rs b/src/services/w3c/issuer.rs
index d63409aa..bca88f52 100644
--- a/src/services/w3c/issuer.rs
+++ b/src/services/w3c/issuer.rs
@@ -100,7 +100,7 @@ pub fn create_credential(
     let credential_values = raw_credential_values.encode(&encoding)?;
 
     let (credential_signature, signature_correctness_proof, rev_reg_id, rev_reg, witness) =
-        CLCredentialIssuer::init(cred_def, cred_def_private)?.create_credential(
+        CLCredentialIssuer::new(cred_def, cred_def_private).create_credential(
             cred_offer,
             cred_request,
             &credential_values,
diff --git a/src/services/w3c/prover.rs b/src/services/w3c/prover.rs
index f9d60947..e0fd3791 100644
--- a/src/services/w3c/prover.rs
+++ b/src/services/w3c/prover.rs
@@ -109,7 +109,7 @@ pub fn process_credential(
     let proof = w3c_credential.get_mut_credential_signature_proof()?;
     let mut signature = proof.get_credential_signature()?;
 
-    CLCredentialProver::init(link_secret)?.process_credential(
+    CLCredentialProver::new(link_secret).process_credential(
         &mut signature.signature,
         &signature.signature_correctness_proof,
         &cred_values,
@@ -152,7 +152,7 @@ pub fn create_presentation(
 
     let pres_req = pres_req.value();
 
-    let mut proof_builder = CLProofBuilder::init(pres_req, schemas, cred_defs)?;
+    let mut proof_builder = CLProofBuilder::new(pres_req, schemas, cred_defs)?;
 
     for present in credentials.0.iter() {
         if present.is_empty() {
diff --git a/src/services/w3c/verifier.rs b/src/services/w3c/verifier.rs
index 28326545..e129adbc 100644
--- a/src/services/w3c/verifier.rs
+++ b/src/services/w3c/verifier.rs
@@ -73,7 +73,7 @@ pub fn verify_presentation(
         aggregated_proof: proof_data.aggregated,
     };
 
-    let mut proof_verifier = CLProofVerifier::init(
+    let mut proof_verifier = CLProofVerifier::new(
         pres_req,
         schemas,
         cred_defs,
@@ -233,7 +233,7 @@ fn _check_encoded_attributes(
     credential_proof: &CredentialPresentationProofValue,
 ) -> Result<()> {
     credential
-        .attributes()
+        .get_attributes()
         .iter()
         .map(|(name, value)| {
             encode_credential_attribute(value).and_then(|encoded| {