I think private attestations in SIGN act like an invisible power layer. Public attestations show who qualifies, but Sign Protocol lets attestors issue hidden credentials that still pass verification without being openly readable.
What’s easy to miss is how these private attestations feed directly into token distribution. Two users can look the same on-chain, yet one gets access because a private credential quietly validates them behind the scenes.
At first glance it looks flexible, but the real control sits with attestors defining schemas. This reduces transparency and makes it hard to audit or question why certain users receive distribution while others do not.