diff --git a/encoding/cid.go b/encoding/cid.go
index 20358b4..440bf04 100644
--- a/encoding/cid.go
+++ b/encoding/cid.go
@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"git.lumeweb.com/LumeWeb/libs5-go/internal/bases"
-	"git.lumeweb.com/LumeWeb/libs5-go/serialize"
 	"git.lumeweb.com/LumeWeb/libs5-go/types"
 	"git.lumeweb.com/LumeWeb/libs5-go/utils"
 	"github.com/vmihailenco/msgpack/v5"
@@ -213,7 +212,7 @@ func (b CID) MarshalJSON() ([]byte, error) {
 }
 
 func (cid *CID) UnmarshalJSON(data []byte) error {
-	decData, err := serialize.UnmarshalBase64UrlJSON(data)
+	decData, err := UnmarshalBase64UrlJSON(data)
 
 	if err != nil {
 		return err
diff --git a/serialize/serialize.go b/encoding/encoding.go
similarity index 56%
rename from serialize/serialize.go
rename to encoding/encoding.go
index f0d5ab2..7dad476 100644
--- a/serialize/serialize.go
+++ b/encoding/encoding.go
@@ -1,9 +1,6 @@
-package serialize
+package encoding
 
-import (
-	"encoding/base64"
-	"github.com/multiformats/go-multibase"
-)
+import "encoding/base64"
 
 func UnmarshalBase64UrlJSON(data []byte) ([]byte, error) {
 	strData := string(data)
@@ -15,15 +12,16 @@ func UnmarshalBase64UrlJSON(data []byte) ([]byte, error) {
 		return nil, nil
 	}
 
-	if strData[0] == 'u' {
-		_, decoded, err := multibase.Decode(strData)
-		if err != nil {
+	decodedData, err := MultibaseDecodeString(strData)
+	if err != nil {
+		if err != ErrMultibaseEncodingNotSupported {
 			return nil, err
 		}
-		return decoded, nil
+	} else {
+		return decodedData, nil
 	}
 
-	decodedData, err := base64.RawURLEncoding.DecodeString(strData)
+	decodedData, err = base64.RawURLEncoding.DecodeString(strData)
 	if err != nil {
 		return nil, err
 	}
diff --git a/encoding/encrypted_cid.go b/encoding/encrypted_cid.go
index 0d990f3..ba73f65 100644
--- a/encoding/encrypted_cid.go
+++ b/encoding/encrypted_cid.go
@@ -3,7 +3,6 @@ package encoding
 import (
 	"encoding/json"
 	"errors"
-	"git.lumeweb.com/LumeWeb/libs5-go/serialize"
 	"git.lumeweb.com/LumeWeb/libs5-go/types"
 	"git.lumeweb.com/LumeWeb/libs5-go/utils"
 	"github.com/vmihailenco/msgpack/v5"
@@ -101,7 +100,7 @@ func (c EncryptedCID) MarshalJSON() ([]byte, error) {
 }
 
 func (c *EncryptedCID) UnmarshalJSON(data []byte) error {
-	decData, err := serialize.UnmarshalBase64UrlJSON(data)
+	decData, err := UnmarshalBase64UrlJSON(data)
 
 	if err != nil {
 		return err