At first, I thought Sign was mainly about verifying things once and moving on. But looking closer, it actually operates at the lifecycle level.
Most systems treat actions as static—you check something, and that result stays fixed. In reality, though, conditions change. Access expires, data updates, and validity shifts over time.
What Sign introduces is the ability to account for that change. Attestations aren’t just created—they can evolve, expire, or be revoked, allowing systems to verify what’s true in the present, not just what was true before.
That changes how logic is built. Instead of relying on fixed states, applications can respond to ongoing conditions.
To me, this feels much closer to how real-world trust and permissions actually function.