can i extract internal key given tweaked-pubkey and tweak?

Tweaking an "internal" public_key into a "tweaked" public key, using bip341 for key spend with taproot, seems to make it impossible to extract the internal key, even when knowing the tweak.

Application is trying to identify a Nostr id from a taproot address. Even when the taproot is spent, this is still not possible, as the tweaked pubkey can't be mapped to an untweaked (nostr) pubkey.

This can only be done by getting a list of NostrIds and generating the TapTweak bip341 addresses and doing a lookup.

Am I missing something?



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