The Solana Attestation Service (SAS) is a new onchain protocol that enables verifiable claims to be issued, held, and verified directly on Solana. These attestations connect off-chain identity and compliance data with onchain wallet addresses, forming a decentralized, permissionless credential system.

Similar to the Ethereum Attestation Service (EAS), which is already used by platforms like Coinbase, SAS introduces similar functionality tailored to Solana's high-performance environment. Onchain attestations can be used to confirm identity, verify jurisdictional compliance, screen for sanctions, and more, without compromising user privacy.

How does SAS work

At its core, SAS enables a three-party flow:

• Issuers (e.g., exchanges, KYC providers) create attestations about wallets using predefined schemas.

• Holders (wallet owners) own these attestations and present them to apps.

• Verifiers (dApps or protocols) check the validity and authenticity of attestations before granting access or processing actions.

These attestations are issued via signed data packages and recorded onchain. Solana’s architecture – especially its use of stateless programs and Program Derived Accounts (PDAs) – enables efficient handling and verification of these attestations at scale. Learn more about it here.

For example, a trading platform may require a “Proof of KYC” attestation from a trusted issuer before allowing a wallet to place trades. SAS provides the mechanism to verify this in a decentralized and fast manner – the wallet owner could KYC with a single identity provider, who in turn issues an attestation confirming the wallet as belonging to a human, with verified identity and not flagged on sanctions lists. The wallet owner can then use this attestation on all apps that may ask for KYC information, without exposing their private identity documents to each of these apps. 

Just like the Ethereum Attestation Service (EAS) enables wallet-linked identity across EVM chains, SAS brings the same model to Solana, optimized for the SVM’s parallelism and low-latency design. However, while EAS depends on Ethereum’s stateful contract model, SAS uses Solana's stateless execution, PDAs, and schema-driven accounts to store and verify attestations more efficiently.

Both protocols enable permissionless credential issuance and selective disclosure, but SAS benefits from Solana's throughput and fast finality – critical for real-time applications like trading or compliance enforcement.

Use Cases and Value

Solana Attestation Service unlocks a broad spectrum of use cases across Solana by enabling decentralized, verifiable attestations onchain. These use cases could include:

• Sybil resistance: Protocols can require “Proof of Humanity” to prevent bot attacks or farming.

• Compliance: Exchanges and dApps can require attestations for KYC, sanctions screening, or accredited investor status.

• Reputation systems: Social protocols can leverage attestations for verified usernames, contributions, or activity history.

• Access control: Apps can restrict or enable features based on attestations (e.g., age, geography).

Launch partners are already integrating SAS in production across the ecosystem. Below are some examples:

• Civic integrates SAS with Civic Pass, a reusable identity and permissioning framework that major DeFi apps use. With SAS-compatible attestations now issued in the background, Civic Pass holders automatically gain compliant access to onchain services without additional user steps.

• RNS.ID issues government-backed digital residency credentials through SAS. Attestations include proof of age, nationality, and jurisdictional eligibility – crucial for tokenized securities and legal-compliant access to web3 applications.

• Sumsub, a leading KYC/IDV provider in crypto, issues SAS attestations as part of its new Reusable Identity feature. Verified user identities can be reused across platforms without repeat verification steps, streamlining onboarding.

• Solana ID uses SAS to anchor verified employment and work history credentials on-chain. This enables immutable, employer-issued attestations for contributors across DAOs and startups – useful for applications like DAO tooling, contributor marketplaces, and social graphs.

• Solid mints “Priority Passes” via SAS, representing a user's verified reputation, social credentials, and KYC history. These credentials are selectively shareable and can be staked to boost trust scores – useful for Sybil resistance and decentralized reputation markets.

• Trusta.AI incorporates SAS to build a decentralized identity graph that spans human and AI agents. Attestations will be foundational for an emerging universal trust infrastructure in the AI+crypto space.

• Wecan connects Solana to official data registries like land and commercial registers through SAS. This means tamper-proof property and company record validation, ready to be adopted by banks and public sector agencies.

• Polyflow uses SAS to anchor transactional proofs and user identity in its PayFi stack. This creates a compliance-aware payment trail for enterprise payments and liquidity routing – enabling secure, traceable infrastructure for tokenized money movement.

How Range integrates with the Solana Attestation Service

Range’s integration of SAS is focused on three aspects:

Enriched Wallet Intelligence

Every Solana wallet indexed by Range will include any linked SAS attestations. This will help with investigations and analysis of user wallets, incorporating identity, compliance, and behavioral context directly on our front-end.

Transaction Risk Scoring & Security Rules

Range's real-time transaction simulation and security engine – the Solana Transaction Security Standard – will use SAS attestations as part of its logic. For example, developers can set rules such as “Only allow transfers to wallets with a verified Solana ID,” or downgrade risk scores for wallets lacking key attestations.

Easy Access via Range API

These attestations will also appear in response payloads for users of the Range API, including our Risk Score and Simulation APIs. Any attestation metadata we ingest will be fully exposed when querying a Solana wallet on our API, allowing teams to integrate it into their own compliance flows or frontend apps.

If you are already using our API, you can access attestation data as an additional field in the response structure when querying wallet data or simulating transactions. This data will include:

• Attestation type (e.g., Proof of KYC)

• Issuer details

• Schema references

• Status (active, revoked)

Documentation and schema formats will be available at docs.range.org shortly, including examples for filtering or verifying attestations in your apps.

An example UI of how Solana Attestations will be incorporated into our wallet intelligence front-end

Start using Solana Attestations with Range

If you're building an app on Solana, this integration provides a privacy-preserving, decentralized way to make informed decisions based on verified wallet metadata.

If you want to leverage the Solana Transaction Security Standard to enforce security policies based on attestations, or want to use Range API to incorporate attestation-aware logic into your app or backend, get in touch today.

And since you are here, check out our Advanced Multisig Security Solution for Solana - a comprehensive security solution perfect for any team that secures high-value treasuries, programs, or tokens with Squads.