Yes, you're right about the sequence in ECC: we start with the private key and then generate the public key through ECC. Txtailor builds on this process by adding tweaks to enhance the system's privacy and security while adhering to ECC's core principles. This can be done on a public key in isolation( where the private key can be hidden.. unknown.. not shared... And thus creating a new address, which is accessible by only the user who's public key we tweaked... because only they have the corresponding original private key