Normalize BLS public keys to canonical lowercase hex

Author: evgeny-stakewise

src/validators/execution.py

@@ -32,6 +32,7 @@ async def process_events(self, events: list[EventData], to_block: BlockNumber) -
         new_keys: set[HexStr] = set()
         for event in events:
             public_key = process_network_validator_event(event)
+            # Track only deposit events for keys we manage
             if public_key and public_key in public_keys_manager.public_keys:
                 new_keys.add(public_key)
 

src/validators/validators.py

@@ -7,8 +7,9 @@
 
 def validate_bls_pubkey(v: HexStr) -> HexStr:
     try:
-        if len(Web3.to_bytes(hexstr=v)) == BLS_PUBLIC_KEY_BYTES_LENGTH:
-            return v
+        raw = Web3.to_bytes(hexstr=v)
+        if len(raw) == BLS_PUBLIC_KEY_BYTES_LENGTH:
+            return HexStr(Web3.to_hex(raw))
     except Exception:  # nosec
         pass