Hello together, thank you for raising the idea. As far as i understood - defining some kind of data attributes centrally which are unique on family level is causing more struggle in usability even if there could be a slight benefit in reducing the general payload. ////////////////////////////////////////// Single Point of Truth /////// I see a potential down side in the definition of the central point of truth. It could be one relay of the family. But when a single relay is holding that information and that relay disappears or is compromise, the information could be lost/altered. Are there any other location (non-torrc) where that information could be included. Maybe some functionality that could be added by the TOR-Project themselves instead of having workaround with third party specs like CIISS. ////////////////////////////////////////// Levels of relevancy /////// Furthermore i see different levels of relevancy. - FamilyID / HappyFamilyID Level - vServer Level (Multiple Relays) - Relay Fingerprint Level The ContactInfo (according to spec ciissversion:3) can contain also data attributes (hoster, ram, etc..) which are only relevant on Relay Fingerprint Level, or even vServer Level (multiple relays). That means when we will end up in a hydrid-state anyways. All relays would contain their specific (Relay Fingerprint Level ) data attributes in the ContactInfo field - only one relay would have have the additional information. I also like to understand which data attributes of ciissversion:3 you are specifically talking about. @NUSENU Is it only about these - that you want to markup centrally? (1) email: (2) url: (3) proof: Kind regards DTMS - dont track my stuff