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Please stop immediately. Hall pass?
In a world without permission, that’s a troublesome question. Blockchain was not actually built for access control. They were constructed to say yes to anyone with a private key.
But as cryptography has increasingly conflicted with our small non-bubble lives, the need for permission has become inevitable. Who is old enough to enter? Who lives in the right country? Who has permission to vote, and how many times? Who’s not a bot?
For a long time, the only answer has been obtained from a one-time user flow that traps developer teams on a walled KYC platform or maintenance purgatory. All dapps that want to check their credentials will end up rebuilding the same vulnerable backend multiple times, and users will recreate the right to access at every door.
Many builders are working on this today, but here in the Solana land there is one solution that has seen a lot of talk, especially recently. The Solana Attestation Service (SAS) is a new open protocol to turn off-chain facts into reusable, verifiable claims that stick to your wallet like a passport stamp.
Essentially it provides a universal layer for issuing and checking identity-based credentials. Issuers such as KYC providers, DAOS, employers, and even governments can write a signed certificate at the Solana Wallet address that can prove something like “I’m over 18”, “I live in the US”, “I passed this DAO verification process”.
Dapps does not need to save or double-check that data. Just check the stamp.
Typical proofs include wallet addresses, claims (such as “certified”), metadata (optional), and signatures from the publisher. Solana proves Onchain and stores what can be queried and verified in a single SDK call.
There is no server, user data, or custom logic. Trust us on the fast path to trust, complexity and compliance.
Privacy gifts (no on-chain personal information), frictionless (use once, anywhere), no permission (to allow anyone to build), smoother, safer, and more complicated user experience.