Обсуждение: Checking for valid UUID values?

I am trying to insert their data into my table and with a programming language I'd use some sort of try/catch to try casting their UUIDs to actual UUIDs: does PSQL offer any kind way of doing this?

INSERT INTO mytable SELECT uuid FROM vendor WHERE ..... is_valid_uuid(uuid) IS NOT NULL? Or something?

Which would essentially try/catch casting to UUID and returning NULL if it's bad. At which point I send a politely worded letter to my vendor.
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