Well, there's the "input format" (or rather two), which gets parsed into the internal representation. The input format can be either hex text, which allows das

Well, there's the "input format" (or rather two), which gets parsed into the internal representation. The input format can be either hex text, which allows dashes in some positions, or binary, in which it's just a bytearray. There's no verification otherwise, unless you treat generation of UUIDs, which allows to specify the type, as such.