Has anyone gotten LNMarkets (npub1lnm…tnnn) LNURL callbacks to work? I've manually done my own LNURL auth, but their callback asks for an HMAC.
I thought you only needed the k1 (provided by me), signature and publickey (provided by wallet) to confirm a signature?
(it also wants an HMAC and tag)
https://docs.lnmarkets.com/api/operations/lnurlvalidateauth
