diff --git a/core/sources/civarchive.py b/core/sources/civarchive.py
index 76e7f6d..2dc1ff0 100644
--- a/core/sources/civarchive.py
+++ b/core/sources/civarchive.py
@@ -768,11 +768,7 @@ def _same_file(file_info: Dict[str, Any], mirror: Dict[str, Any]) -> bool:
     if file_name and mirror_name and file_name == mirror_name:
         return True
 
-    file_sha = (
-        file_info.get("sha256")
-        or (file_info.get("hashes") or {}).get("SHA256")
-        or (file_info.get("hashes") or {}).get("sha256")
-    )
+    file_sha = extract_file_sha256(file_info)
     mirror_sha = mirror.get("sha256") or mirror.get("hash")
     return bool(file_sha and mirror_sha and str(file_sha).lower() == str(mirror_sha).lower())
 
diff --git a/core/sources/civitai.py b/core/sources/civitai.py
index 134f6ed..c8bd623 100644
--- a/core/sources/civitai.py
+++ b/core/sources/civitai.py
@@ -44,6 +44,7 @@ from ..type_utils import (
     build_model_result,
     check_credential_http,
     check_credential_preconditions,
+    extract_file_sha256,
     extract_file_size,
     extract_trained_words,
     first_non_empty,
@@ -171,7 +172,7 @@ def build_civitai_result_payload(
 ) -> Dict[str, Any]:
     """Build the shared CivitAI result fields used by search entry points."""
     hashes = file_info.get("hashes") if isinstance(file_info.get("hashes"), dict) else {}
-    sha256 = file_info.get("sha256") or hashes.get("SHA256") or hashes.get("sha256")
+    sha256 = extract_file_sha256(file_info)
     payload = {
         "model_id": model_id,
         "version_id": version_id,
@@ -1661,11 +1662,7 @@ def get_model_info_by_hash(
                     file_info
                     for file_info in files
                     if isinstance(file_info, dict)
-                    and normalize_sha256(
-                        file_info.get("sha256")
-                        or (file_info.get("hashes") or {}).get("SHA256")
-                        or (file_info.get("hashes") or {}).get("sha256")
-                    )
+                    and normalize_sha256(extract_file_sha256(file_info))
                     == file_hash.lower()
                 ),
                 None,
diff --git a/core/sources/lora_manager_archive.py b/core/sources/lora_manager_archive.py
index 0f8a1a7..e002ca1 100644
--- a/core/sources/lora_manager_archive.py
+++ b/core/sources/lora_manager_archive.py
@@ -27,6 +27,7 @@ from ..path_utils import get_filename_from_path
 from ..progress import get_progress_reporter
 from ..type_utils import (
     build_model_result,
+    extract_file_sha256,
     extract_file_size,
     get_generic_filename_tokens,
     normalize_alphanumeric_key,
@@ -254,12 +255,7 @@ def _find_hash_match_row(
         file_info = _build_file_info(row["file_data"])
         if not file_info:
             continue
-        hashes = file_info.get("hashes") or {}
-        file_sha256 = normalize_sha256(
-            file_info.get("sha256")
-            or hashes.get("SHA256")
-            or hashes.get("sha256")
-        )
+        file_sha256 = normalize_sha256(extract_file_sha256(file_info))
         if file_sha256 == requested_sha256:
             full_row = _load_full_rows_for_versions(
                 conn, [row["version_id"]]
@@ -405,6 +401,11 @@ def _build_result_from_row(
     version_id = row["version_id"]
     files = _load_version_files(conn, version_id)
     primary_file = select_primary_model_file(files)
+    primary_hashes = (
+        primary_file.get("hashes")
+        if primary_file and isinstance(primary_file.get("hashes"), dict)
+        else {}
+    )
     filename = (
         primary_file.get("name")
         if primary_file
@@ -412,16 +413,11 @@ def _build_result_from_row(
         if isinstance(version_data.get("files"), list) and version_data.get("files")
         else ""
     )
-    primary_hashes = (
-        primary_file.get("hashes")
-        if primary_file and isinstance(primary_file.get("hashes"), dict)
-        else {}
-    )
     primary_sha256 = (
-        primary_file.get("sha256")
+        normalize_sha256(extract_file_sha256(primary_file))
         if primary_file
         else ""
-    ) or primary_hashes.get("SHA256") or primary_hashes.get("sha256")
+    )
 
     tags = model_data.get("tags", [])
     if not isinstance(tags, list):
diff --git a/web/resolver/search/search_hash_methods.js b/web/resolver/search/search_hash_methods.js
index cae1215..207ff57 100644
--- a/web/resolver/search/search_hash_methods.js
+++ b/web/resolver/search/search_hash_methods.js
@@ -1,4 +1,4 @@
-import { getSha256Field, normalizeSha256 } from '../utils/hash_utils.js';
+import { firstValidSha256, getSha256Field, normalizeSha256 } from '../utils/hash_utils.js';
 import { normalizeSourceKey } from '../utils/source_labels.js';
 
 export const searchHashMethods = {
@@ -20,11 +20,7 @@ export const searchHashMethods = {
             fileHashes.sha256
         ];
 
-        for (const candidate of candidates) {
-            const hash = normalizeSha256(candidate);
-            if (hash) return hash;
-        }
-        return '';
+        return firstValidSha256(...candidates);
     },
 
     collectHashLabelMapHashes(missing = {}, results = null) {
diff --git a/web/resolver/utils/hash_utils.js b/web/resolver/utils/hash_utils.js
index 1527237..3b77758 100644
--- a/web/resolver/utils/hash_utils.js
+++ b/web/resolver/utils/hash_utils.js
@@ -13,3 +13,11 @@ export function normalizeSha256(value = '') {
     text = text.replace(/^sha256[:=]/i, '').trim().toLowerCase();
     return /^[a-f0-9]{64}$/.test(text) ? text : '';
 }
+
+export function firstValidSha256(...values) {
+    for (const value of values) {
+        const hash = normalizeSha256(value);
+        if (hash) return hash;
+    }
+    return '';
+}