That's only an issue if getting the proof involves somehow identifying the servi...

rcxdude 43 days ago | parent | context | favorite | on: Brussels launched an age checking app. Hackers too...

That's only an issue if getting the proof involves somehow identifying the service you are sending it to. If it's a generic 'send me a proof' it's not necessarily a problem, though of course it would be better if you could just generate your own proof.