diff --git a/swh/indexer/metadata_dictionary/cff.py b/swh/indexer/metadata_dictionary/cff.py
--- a/swh/indexer/metadata_dictionary/cff.py
+++ b/swh/indexer/metadata_dictionary/cff.py
@@ -1,4 +1,3 @@
-import re
 from typing import Dict, List, Optional, Union
 
 import yaml
@@ -31,77 +30,28 @@
             return None
 
         if isinstance(content_dict, dict):
-            content_dict_checked = self.value_type_check(content_dict)
-            metadata = self._translate_dict(content_dict_checked)
+            metadata = self._translate_dict(content_dict)
             metadata["@context"] = CODEMETA_CONTEXT_URL
             return metadata
 
         return None
 
-    def value_type_check(self, content_dict):
-        type_checked_content_dict = {}
-
-        for field in content_dict:
-            if field == "authors":
-                authors = []
-
-                for author in content_dict["authors"]:
-                    author_checked = {}
-
-                    if "given-names" in author and isinstance(
-                        author["given-names"], str
-                    ):
-                        author_checked["given-names"] = author["given-names"]
-
-                    if "name-particle" in author and isinstance(
-                        author["name-particle"], str
-                    ):
-                        author_checked["name-particle"] = author["name-particle"]
-
-                    # will add the rest if what I'm doing is correct...
-
-                    # Check if the given author email keeps with the re of emails
-                    if "email" in author and bool(
-                        re.match(
-                            r"([A-Za-z0-9]+[.-_])*[A-Za-z0-9]+@[A-Za-z0-9-]+(\.[A-Z|a-z]{2,})+",
-                            author["email"],
-                        )
-                    ):
-                        author_checked["email"] = author["email"]
-
-                    for subField in author:
-                        if not (
-                            subField == "given-names"
-                            or subField == "name-particle"
-                            or subField == "email"
-                        ):
-                            author_checked[subField] = author[subField]
-
-                    authors.append(author_checked)
-
-                type_checked_content_dict["authors"] = authors
-
-            else:
-                type_checked_content_dict[field] = content_dict[field]
-
-        return type_checked_content_dict
-
     def normalize_authors(self, d: List[dict]) -> Dict[str, list]:
         result = []
         for author in d:
             author_data: Dict[str, Optional[Union[str, Dict]]] = {
                 "@type": SCHEMA_URI + "Person"
             }
-            if "orcid" in author:
+            if "orcid" in author and isinstance(author["orcid"], str):
                 author_data["@id"] = author["orcid"]
-            if "affiliation" in author:
+            if "affiliation" in author and isinstance(author["affiliation"], str):
                 author_data[SCHEMA_URI + "affiliation"] = {
                     "@type": SCHEMA_URI + "Organization",
                     SCHEMA_URI + "name": author["affiliation"],
                 }
-            if "family-names" in author:
+            if "family-names" in author and isinstance(author["family-names"], str):
                 author_data[SCHEMA_URI + "familyName"] = author["family-names"]
-            if "given-names" in author:
+            if "given-names" in author and isinstance(author["given-names"], str):
                 author_data[SCHEMA_URI + "givenName"] = author["given-names"]
 
             result.append(author_data)