I+mst2euvwzrp0472t+fixed

print(fix_identifier("i+mst2euvwzrp0472t+fixed"))

core_id = raw.split('+')[1] # "mst2euvwzrp0472t" The string i+mst2euvwzrp0472t+fixed is not random noise — it follows a plausible pattern: a short prefix, a fixed-length alphanumeric core, and a status suffix separated by plus signs. The “fix” depends on context: remove metadata, decode URL encoding, or split fields. i+mst2euvwzrp0472t+fixed

Or if you need to extract the core ID: