BNB Attestation Service
basWhat is BNB Attestation Service?
BNB Attestation Service (BAS) is a verification layer built around schemas, attestations, and application-specific verification logic. A schema defines a claim’s structure, an attester issues the claim for a recipient, and applications inspect the resulting record or proof. Current project materials describe publicly recorded on-chain attestations and access-controlled off-chain attestations stored through BNB Greenfield. The separately tradable BAS token is deployed on BNB Smart Chain at 0x0F0df6cB17ee5E883eddFEf9153fC6036BDB4e37; holding it should not be interpreted as ownership of identity data, protocol revenue, real-world assets, or the service itself without separate enforceable terms.
What problem does BNB Attestation Service solve?
Blockchain applications often need to check facts that token balances cannot express, such as whether an address completed KYC, holds a credential, qualifies for an allowlist, or has a particular reputation signal. Repeating those checks in isolated applications can make credentials difficult to reuse and may disclose more data than necessary. BAS aims to provide shared attestation formats and verification infrastructure so claims can be issued once and evaluated by multiple applications while some off-chain information remains access-controlled. Identity, KYC, asset-proof, RWA, DeFi, and AI-agent applications are current project-stated use cases, not independent evidence of adoption, regulatory compliance, legal enforceability, or completed integrations.
How does BNB Attestation Service work?
A developer registers or selects a schema defining the fields of an attestation. An attester then signs or submits a claim for a recipient. BAS contracts record on-chain attestations for public querying, while the project says off-chain attestations may be stored through BNB Greenfield with access permissions. Schema resolvers can apply application-specific validation or acceptance rules, and the BAS explorer exposes schemas and attestations for inspection. The public bas-contract repository covers BNB Smart Chain and opBNB infrastructure and says its attestation contracts were forked from Ethereum Attestation Service contracts; its listed infrastructure addresses are not the BAS token address. This protocol design does not establish an economic role for the BAS token. CertiK’s current automated scan reports minting, transfer-pausing, whitelist, and hidden-owner characteristics, but the controlling addresses, present role assignments, and whether each control is active were not established from the reviewed sources.
Key facts
- The canonical asset is BNB Attestation Service, ticker BAS, and its tracked BEP-20 contract on BNB Smart Chain is 0x0F0df6cB17ee5E883eddFEf9153fC6036BDB4e37.
- The current official website presents BAS as an attestation and reputation layer for the BNB ecosystem, with identity, KYC, asset-proof, RWA, DeFi, and AI-agent use cases; these presentations do not by themselves prove deployment, adoption, or legal effect.
- BAS distinguishes publicly recorded on-chain attestations from off-chain attestations that the project says are stored through BNB Greenfield with access controls; the privacy of a specific record depends on its implementation and what is placed on-chain.
- The public bas-contract repository describes attestation infrastructure on BNB Smart Chain and opBNB and says the contracts were forked from Ethereum Attestation Service; repository infrastructure addresses must not be confused with the BAS token contract.
- Market sources reported 10 billion BAS total and maximum supply and 2.5 billion circulating at the review snapshot. Circulation is time-sensitive, and these figures do not prove an immutable technical cap because CertiK’s automated scan reports mint capability.
- KuCoin opened BAS/USDT trading on August 21, 2025 at 08:00 UTC, providing a dated independent marker for the token’s public market rollout.
- CertiK’s automated scan reports mint capability, transfer pausing, whitelist logic, a hidden owner, and concentrated major holdings. It also reports conventional owner privilege as renounced; this combination may indicate role-based control beyond a standard owner slot, but direct source-code and current on-chain role checks are required.
- Located official materials did not establish a current fee, staking, incentive, or governance function for BAS, or holder rights to revenue, redemption, protocol assets, identity data, real-world assets, or governance outcomes. Displayed protocol usage metrics were not shown to create demand for the token.
- Current BAS pages exposed documentation links at doc.bas.io or the older doc.bascan.io, but neither hostname resolved during the review. The homepage also uses both “BNB Attestation Service” and “Binance Attestation Service” metadata; visible product copy and market identity support BNB Attestation Service, while the branding inconsistency remains.
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Frequently asked questions
What does BNB Attestation Service do?
It provides schemas and infrastructure for issuing and verifying attestations: structured claims accompanied by proofs. The project currently presents identity, credentials, KYC, reputation, asset proofs, DeFi eligibility, RWA workflows, and AI-agent reputation as use cases, but those descriptions are not independent proof of adoption or legal enforceability.
Are BAS attestations always public?
No. The project describes on-chain attestations recorded publicly and off-chain attestations stored through BNB Greenfield with access permissions. The privacy of any specific attestation depends on its implementation and on which information, if any, is placed on-chain.
What is the BAS token contract?
The tracked BAS token is a BEP-20 asset on BNB Smart Chain at 0x0F0df6cB17ee5E883eddFEf9153fC6036BDB4e37. Users should verify the full address because the BAS ticker is not unique, and should not confuse it with protocol infrastructure addresses listed in the bas-contract repository.
Does BAS provide governance, revenue, redemption, or ownership rights?
The located official materials did not clearly establish an enforceable governance vote, revenue share, redemption claim, or ownership interest in protocol assets, identity data, or real-world assets. They also did not clearly document the token’s present fee, staking, or incentive role, so protocol use cases should not be treated as token-holder rights.
Is BAS supply fixed, and what contract controls exist?
Market trackers reported 10 billion total and maximum supply and 2.5 billion circulating at the review snapshot, but circulation changes over time and CertiK’s automated scan reports mint capability. The same scan reports transfer pausing, whitelist logic, a hidden owner, concentrated major holdings, and renounced conventional owner privilege. The controlling addresses, present role configuration, and whether each power remains usable require direct on-chain verification.
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