{"type":"rich","version":"1.0","title":"boilerhodl wrote","author_name":"boilerhodl (npub14y…g8xet)","author_url":"https://yabu.me/npub14y9984l32yr3jna9gsh5lz9l6l2yp3uxx8nxrav6u3jcr8duhhhqzg8xet","provider_name":"njump","provider_url":"https://yabu.me","html":"Our server uses a secp256k1 implementation to verify the ECDSA signature against the digest and the master xpub (public key) of the TAPSIGNER. If that signature is valid, the user is authenticated."}