Overview & onboarding
What KYB is, how business governance works, and the onboarding steps KYB adds on top of KYC — entitlements, a webhook endpoint and prepaid credit.
Business login
Let a business sign in to your app with CorePass — the same OAuth flow as personal login, plus the business scope and extra token claims.
Business lookups
Read a business's verification status, governance rules and member roster — free, and available to every organization.
Data requests
Ask a business to release verified company, director and UBO data — directly by wallet address or via a QR-code offer — and manage the request lifecycle.
Signature requests
Ask a business to sign a text message or EIP-712 typed data, and verify the resulting EIP-1271 signature against the business wallet contract.
Webhooks & Corepass-KYB-Signature
The KYB webhook envelope, event catalogue, pricing fields, the Corepass-KYB-Signature header, deduplication, retries and pulling results.
Verifying attestations
Reference code in Go and Node.js that runs the five attestation checks on a KYB webhook or pulled release.
Field reference
Business data fields you can name in a KYB data request — company facts, documents, verification state, directors, beneficial owners and declared fields.
Pricing & billing
How KYB data requests are priced per disclosed field, how credit is reserved and charged, and how to read your balance.
Statuses & error codes
Status values, refusal reasons, HTTP error reasons and entitlements for the KYB API.