BAS Address Verification Simulator
Verify Your BAS Identity
This simulator demonstrates how BNB Attestation Service verifies identity claims without revealing personal data.
Verification Result
Verification Status
Note: This is a simulation. Actual BAS verification uses cryptographic proofs and off-chain data storage on BNB Greenfield.
Enter an address to simulate BAS verification process.
How BAS Works
BAS creates cryptographic hashes stored on-chain while keeping sensitive data encrypted and off-chain. This allows verification without exposing personal information.
- • On-chain: Verifiable attestation hash
- • Off-chain: Encrypted identity data on BNB Greenfield
- • User controls decryption keys
Ever wondered how Web3 can prove who you are without handing over your passport to a central authority? BNB Attestation Service (BAS) is a decentralized identity and reputation layer built for the BNB Chain that lets users create verifiable proofs of identity, ownership, and behavior while keeping personal data private. In plain English, BAS acts like a digital notary that records trustworthy claims on‑chain and lets developers plug those claims into DeFi, tokenized assets, or AI‑driven apps.
Why BAS matters in the crypto ecosystem
Most blockchain projects assume that anyone can trust a public address, but they ignore a crucial question: how do you know the address belongs to a real person who passed KYC? BAS fills that gap by issuing cryptographic attestations that anyone can verify without exposing sensitive info. This solves two big problems: compliance for regulators and trust for users who fear data breaches.
The platform already generated more than 40 million attestations for over 2.5 million addresses, proving that the technology isn’t just a white‑paper idea-it’s being used at scale across the BNB ecosystem.
Core components of the BAS ecosystem
- BNB Passport serves as a master digital identity that aggregates KYC data from Binance and other exchanges, making it portable across the network.
- Attestation Registry stores public proofs on‑chain while keeping private data off‑chain on BNB Greenfield. Think of it as a tamper‑proof ledger of claims.
- BAS Verify SDK offers plug‑and‑play tools for dApps to add permissioning, compliance filters, and personalized experiences. Developers can drop the SDK into a smart contract and instantly gain attestation support.
How the on‑chain / off‑chain split works
When you create an attestation, BAS writes a hash and proof to the BNB Chain (on‑chain). The actual data-like the scanned ID or a detailed credit report-lands on BNB Greenfield a decentralized storage network optimized for privacy and access control. Users keep the decryption keys, so only parties they authorize can view the underlying info.
This dual‑rail architecture gives you the best of both worlds: transparent verification for anyone, and sealed data that only you can unlock.
Real‑world use cases
Because BAS can prove a KYC‑completed user without leaking the actual documents, it’s a perfect fit for several verticals:
- Real‑World Asset (RWA) tokenization: token issuers can attach a certified ownership attestation, lowering legal risk.
- Decentralized Finance (DeFi): lending platforms can auto‑approve users who hold a valid KYC proof, speeding up onboarding.
- AI‑driven agents: bots can query a user’s reputation score before granting service, preventing fraud.
- DAO governance: members can prove past voting behavior or stake holdings without exposing private balances.
Token economics and market snapshot (Oct 21 2025)
The native token, BAS token powers the attestation engine and incentivizes data providers, trades at $0.01572 with a 24‑hour volume of roughly $97 million (CoinGecko). After a wild 500 % rally in mid‑October, the price fell 38 % in a single day, highlighting the token’s volatility and the still‑nascent market for infrastructure coins.
Market‑cap sits near $360 million-small compared with the ecosystem reach (over 100 partners, millions of attestations). The token’s limited exchange listings (WEEX exchange added in August 2025, Phemex still absent) suggest distribution is still in an early phase.
How to acquire BAS safely
- Check whether your preferred exchange lists BAS. As of now, WEEX exchange offers direct BAS trading pairs and is the most reliable centralized venue.
- If you can’t find a CEX, use a compatible decentralized exchange that supports the BNB Chain.
- Transfer the tokens to a wallet that supports BNB Chain (e.g., Trust Wallet, MetaMask with BNB RPC).
- Never share your private keys. BAS’s whole premise is that you keep control of your data-so keep the keys safe.
Pros, cons, and practical tips
| Aspect | Traditional Centralized ID | BNB Attestation Service |
|---|---|---|
| Data control | Provider owns data, prone to breaches | User owns data, off‑chain encryption |
| Interoperability | Limited to one platform | Cross‑chain compatible via schemas |
| Compliance | Manual checks, costly | On‑chain proof, instant verification |
| Implementation effort | Low for users, high for providers | Higher for devs (SDK integration) |
Bottom line: BAS offers stronger privacy and compliance, but you need a developer team comfortable with schemas, resolvers, and the Verify SDK.
Frequently asked questions
What exactly does an attestation contain?
An attestation stores a cryptographic hash on‑chain plus a reference to encrypted data on BNB Greenfield. The hash proves the claim (e.g., "KYC completed") without revealing the underlying document.
Do I need to hold BAS tokens to use the service?
No. Users can obtain attestations for free; tokens are mainly used to pay for storage on Greenfield and to incentivize data providers.
Is BAS safe from hacking?
Safety comes from its design: private data never lands on the public chain and is encrypted with keys you control. The biggest risk is still human error-losing your private key means losing access.
Can other blockchains adopt BAS?
The architecture is modular. While it’s native to BNB Chain, the schema‑resolver model can be ported to Ethereum, Polygon, or any EVM‑compatible network.
How does BAS differ from traditional KYC providers?
Traditional providers keep a central database of personal documents. BAS turns each verified document into a self‑sovereign attestation that the user can present selectively, removing the need for a single data silo.
Next steps for developers and investors
If you’re a dev, start by exploring the BAS Verify SDK documentation. Build a simple proof‑of‑concept: request a KYC attestation via BNB Passport, store it, then read it from the Attestation Registry. The code samples are short-under 50 lines of JavaScript-so you can test it within a day.
If you’re a trader, keep an eye on exchange listings. The token’s price often spikes after major partnership announcements (e.g., new DAO adopting BAS for reputation). Treat BAS as a long‑term infrastructure play rather than a short‑term meme coin.
Either way, the real value of BAS lies in the trust it creates for the BNB Chain ecosystem. As regulators push for on‑chain compliance, projects that already embed verifiable identity will have a clear advantage.
Jenna Em
October 21, 2025 AT 09:25When you hand over your identity to a single entity, you hand over a piece of your soul. The idea of a decentralized notary feels like a whisper of freedom in a world of surveillance. Yet I can’t shake the feeling that the same powers that built the internet are already waiting to exploit this new layer. Maybe the real question is not who can prove who, but who will control the proofs.