How does it work with transactions before 2026? I tried once robosats and the guy on the other side wanted me to give him a specific reply on Revolut and it spooked me out.
Discussion
Transactions prior to 2026 are not reported instantly, but you must do so if you are inspected.
As for robosats, what they asked you for is to prevent triangulation fraud. It is legitimate to request the issuer's details, such as the revtag or account holder.