New Solana tool fixes the KYC bottleneck

The Solana Attestation Service acts like a passport, letting wallets verify their permissions without doxxing the user

article-image

Kostsov/Shutterstock and Adobe modified by Blockworks

share

This is a segment from the Lightspeed newsletter. To read full editions, subscribe.


Stop right there. Hall pass? 

In a permissionless world, it’s an awkward question. Blockchains weren’t really built for access control; they were built to say yes to anyone with a private key.

But as crypto collides more and more with life outside our little bubble, the need for permissions has become unavoidable. Who’s old enough to enter? Who lives in the correct country? Who has permission to vote, and how many times? Who isn’t a bot?

For too long, the only answers have come from walled-off KYC platforms or one-off user flows that trap dev teams in maintenance purgatory. Every dapp that wants to check a credential ends up rebuilding the same brittle backend over and over, and users get stuck re-proving their right to access at every door.

Many builders are working on this today, but here in Solana land, there’s one solution in particular that’s seen a lot of buzz of late. The Solana Attestation Service (SAS) is a new open protocol for turning off-chain facts into reusable, verifiable claims that stick to your wallet like a passport stamp.

Essentially, it offers a universal layer for issuing and checking identity-based credentials. Issuers, like KYC providers, DAOs, employers and maybe even governments, are now able to write signed attestations to Solana wallet addresses that can prove things like “I’m over 18,” “I live in the US” or “I passed this DAO’s verification process.”

Dapps don’t need to store or recheck that data — they just verify the stamp.

A typical attestation includes a wallet address, a claim (like “is accredited”), metadata (optional) and a signature from the issuer. Solana stores that proof onchain, where it can be queried and verified with a single SDK call.

There is no server, no user data and no custom logic. Just trust, composability and a speedy path to compliance.

It’s privacy-preserving (no personal info onchain), frictionless (attest once, use everywhere) and permissionless (it’s open, so anyone can build with it), resulting in a smoother, safer, more composable user experience.

Stamps earned across DAOs, onchain careers or verified actions can become inputs to everything from undercollateralized lending, to onchain reputation to dynamic governance weight. 

We’ve already seen a few OGs take steps toward integration. Civic recently announced its intention to use SAS to issue reusable compliance credentials. Solid will let users collect stamps like “verified developer” or “founding community member.” RNS.ID has said it’ll be launching its own “Proof” infrastructure on SAS sometime next month.

Solana’s performance edge has made it a playground for DePIN, DeFi and hyperactive gaming, but scaling to the next billion users means handling real-world constraints. SAS allows developers to respect those constraints without sacrificing UX, privacy or decentralization.


Get the news in your inbox. Explore Blockworks newsletters:

Tags

Decoding crypto and the markets. Daily, with Byron Gilliam.

Upcoming Events

Old Billingsgate

Mon - Wed, October 13 - 15, 2025

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

recent research

Research Report Templates.png

Research

Content Delivery Networks (CDNs) represent low-hanging fruit in a massive market ripe for Web3-driven disruption. The global CDN market was valued at ~$28B in 2024, and is projected to surpass $140B by 2034, (18.75% CAGR) underscoring the immense demand for efficient content delivery.

article-image

The $135 million raise shows that TradFi giants are serious about crypto adoption

article-image

The banking system still processes payments like it’s 1975. Crypto might have a fix.

article-image

Fiserv’s launch follows Senate passage of the GENIUS Act for stablecoin regulation.

article-image

Bitcoin is emerging as “the new standard for long-term corporate resilience,” Swan Bitcoin CIO says

article-image

Cybersecurity experts explain how the attack could have been prevented