Everyone keeps boxing Sign in as just an identity tool, but that feels way too narrow. What people are missing is where this is heading. It’s starting to look more like an evidence layer for systems that actually need to prove what they’re doing especially once regulators have eyes on it.
Think of it this way. In things like cross-border payments or public infrastructure, you can’t rely on loose data anymore. You need a trail. Something tied to a real issuer.
The real kicker is apps won’t keep hoarding raw data. They’ll just reference signed data that can be reused across chains. And honestly, that changes how accountability works at the system level.