Business Identity Verification

Know Your Business —
and the person behind it.

A company name on a contract proves very little on its own. ProntoID KYB establishes that the legal entity exists, who ultimately controls it, and that the individual signing for it is a verified person with the authority to do so — sealed into one tamper-evident attestation.

Entity + representative
Beneficial ownership
Cryptographically sealed
The Problem

Verifying a company
is not one check

Most business onboarding stops at a registry lookup. That confirms a company was once registered. It does not tell you whether the entity is still active, who actually controls it, or whether the person filling in your form has any authority to commit it to anything.

Those three gaps are where corporate onboarding fraud lives — and where a supervisor, an auditor or a court will look first when something goes wrong. ProntoID KYB closes all three and leaves you with evidence that you did.

A registry hit is not a live entity
Companies are dissolved, struck off, or restored. A record retrieved today needs a date attached to it, and a record retrieved last year needs re-checking.
A director is not a beneficial owner
Control is frequently held through intermediate companies or nominee arrangements. The name on the register is often not the person who benefits.
A signature is not authority
Anyone can type a director's name into a form. Binding a verified natural person to the entity is what turns a submission into something you can rely on.
A PDF is not evidence
A certificate saved on your own drive proves nothing about when you received it or whether it has since been altered. Hashing and sealing at receipt does.
Scope of Verification

What ProntoID
KYB establishes

Six components, assembled into a single dated and sealed record of the due diligence performed.

Legal entity existence

Confirmation that the company exists as a registered legal person, is currently active rather than dissolved or struck off, and matches the name, registration number and address presented to you.

Registry documents

Examination of constitutional and registry documents — extracts, articles, certificates of incorporation and good standing — each referenced in the attestation by cryptographic hash rather than by filename.

Beneficial ownership

Identification of the natural persons who ultimately own or control the entity, including ownership held through intermediate companies, with the declared structure recorded as part of the sealed record.

Authorised representative

The individual acting for the company is verified through the same ProntoID pipeline used for KYC — document authenticity, MRZ parsing and biometric liveness — then bound to the entity as a named signer.

Screening

Sanctions, watchlist and politically-exposed-person screening across the entity and the individuals identified during verification, with each match or clearance recorded and dated in the attestation.

Periodic re-verification

Corporate facts decay. Re-verification cycles produce a new sealed attestation that references the previous one, so you retain a dated history of what was true and when — nothing is overwritten.

How It Works

From company name
to sealed attestation

01

Entity submitted

You submit the company, or invite it to onboard itself through a hosted flow. ProntoID resolves the entity against its registry record and returns what is publicly established before any documents are requested.

02

Representative verified

The person acting for the company completes a ProntoID identity verification — document capture, MRZ parsing, biometric liveness and face match — establishing that a real, verified individual stands behind the submission.

03

Documents and ownership examined

Constitutional documents, registry extracts and the declared ownership structure are examined. Each document is hashed on receipt so the record refers to exact bytes, not to a file that could later be swapped.

04

Attestation sealed

The findings are canonicalised to RFC 8785, signed with a KMS-held P-256 key and written to an append-only ledger. You receive a verifiable attestation that can be checked independently of ProntoID.

ATTESTATION STRUCTURE
entity Legal name, registration identifiers, jurisdiction, status
documents[] Each source document referenced by SHA-256 digest
beneficial_owners[] Declared ownership and control structure
representative Identity-verified natural person and authority basis
checks[] Each check performed, its outcome and its timestamp
sealed_at RFC 3339 timestamp of sealing
signature Detached JWS over the RFC 8785 canonical payload

Illustrative structure. Exact fields are agreed during onboarding.

The Output

Evidence, not
a green tick

Most verification services hand back a pass or fail. ProntoID hands back a structured record of exactly what was checked, against which documents, on what date, and by whom — cryptographically sealed so it can be relied upon later.

Canonicalised to RFC 8785
The payload is serialised deterministically, so the same record always produces the same bytes and the same digest.
Signed with a KMS-held key
A detached JWS is produced over the canonical payload using an ECDSA P-256 key that never leaves AWS KMS.
Written to an append-only ledger
Amendments create a new sealed record referencing the previous digest. History is preserved, not replaced.
Independently verifiable
A standalone verifier confirms the signature and digest without calling ProntoID, so the evidence outlives the relationship.
How ProntoID sealing works
Where It Is Used

Wherever a company
has to be taken at its word

Regulated onboarding

Onboard corporate customers with a documented, dated and tamper-evident record of the due diligence actually performed.

Marketplace sellers

Establish that a seller is a real trading entity with a verified human behind it before granting them access to buyers.

Supplier due diligence

Know exactly which legal entity you contracted with, and hold a defensible record of the checks you ran before doing so.

Payments and settlement

Confirm entity identity and control before funds move to a business account, and retain evidence of that confirmation.

Partner and reseller networks

Verify entities entering a distribution or reseller network, including the individuals authorised to sign on their behalf.

Product declarations

Provide the entity-verification layer beneath ProntoID Product Supplier Declarations, where a declaration is only as good as the identity of its declarant.

RELATED PRODUCT

Product Supplier Declarations

KYB is the foundation beneath sealed product declarations. A statement about origin, composition or certification only carries weight if the entity making it has been verified first — and cannot later deny having made it.

Explore declarations
Frequently Asked Questions

KYB, answered

What is KYB?

KYB (Know Your Business) is the process of verifying that a business counterparty is a real, active legal entity, establishing who ultimately owns and controls it, and confirming that the individual acting on its behalf is genuinely authorised to do so. It is the corporate counterpart to KYC, which verifies natural persons.

How is KYB different from KYC?

KYC establishes that a natural person is who they claim to be. KYB establishes that a legal entity exists, is active, and that a specific verified person has authority to bind it. ProntoID KYB combines both: the entity is verified against its registry record, and the representative is verified through the same document and biometric liveness pipeline used for ProntoID KYC.

What is a beneficial owner and why does it matter?

A beneficial owner is the natural person who ultimately owns or controls a legal entity, directly or through a chain of intermediate companies. Identifying beneficial owners is a core requirement of EU anti-money-laundering law and of most supplier and merchant due-diligence frameworks, because corporate structures can otherwise be used to obscure who is actually behind a transaction.

What does a ProntoID KYB attestation contain?

A KYB attestation records the verified legal entity, its registration identifiers, the documents examined referenced by cryptographic hash, the identity-verified representative, the checks performed and their outcomes, and the date of verification. It is canonicalised to RFC 8785, signed with a KMS-held P-256 key and written to an append-only ledger, so any later alteration is detectable.

Does a KYB attestation expire?

Corporate records change: directors resign, ownership is transferred, companies are struck off. A KYB attestation is a statement about a specific point in time and carries its verification date. Where ongoing assurance is required, ProntoID supports periodic re-verification, with each cycle producing a new sealed attestation that references the previous one rather than overwriting it.

Can KYB be used for supplier and vendor due diligence?

Yes. KYB is designed to support onboarding across regulated financial relationships, marketplace and platform seller onboarding, and supply-chain due diligence. It is also the entity-verification layer beneath ProntoID Product Supplier Declarations, where a declaration is only meaningful if the entity making it has been verified first.

Which jurisdictions does ProntoID KYB cover?

Registry coverage, available data fields and document requirements vary considerably between jurisdictions. ProntoID confirms available coverage and the specific checks that can be performed for your target markets during onboarding, rather than implying uniform global coverage where none exists.

Know who you are
doing business with

Talk to us about registry coverage, screening scope and attestation formats for your target markets.

Contact Sales See KYC for individuals

Swiss-operated  ·  Designed to support GDPR  ·  Independently verifiable output