BNB Attestation Service
BAS Rank #439Price chart
What is BNB Attestation Service?
Attestation infrastructure
The service records signed claims using schemas that define their structure. Attestations can be published onchain or stored offchain. Offchain records use BNB Greenfield storage with access permissions. Developers integrate verification through APIs and contract interfaces. Applications decide which issuers and claims they accept.
Passport products
BNB Passport combines identity checks with proofs of assets and activity. Users can present these credentials to applications without rebuilding the same profile each time. Agent Passport extends the reputation model to software agents. It records work and reviews associated with agent interactions. These products use attestations as evidence rather than treating every submitted claim as automatically true.
Token design
The announced token supply is ten billion BAS. Community and foundation allocations fund distribution, liquidity and ecosystem development. The token design includes attestation fees and access to premium data services. Staking and governance are also listed among its intended functions. BAS runs within the BNB Chain ecosystem, whose blockchain gas and validation use BNB.
Where to trade BAS
13 exchanges · top 10
Live spot quotes from connected exchanges
BAS funding rates
Live perpetual funding on every connected exchange. Positive = longs pay shorts.
Contracts & chains
Exact contract or mint per network — the identity layer used for DEX routing.
On-chain routes
Networks with a connected DEX routing adapter.