Supplier Onboarding

Onboarding a new supplier in the Netherlands means requesting and validating documents from multiple sources — a Chamber of Commerce (KVK) registration extract, insurance certificates, tax authority statements, VAT registration, and bank account details. Today, these arrive as PDFs or scanned paper copies. Authenticity and origin remain uncertain, leading to delayed onboarding, compliance risks, and administrative overhead.

With verifiable credentials, the entire process becomes digital. Each trusted authority issues a cryptographically signed credential directly to the supplier's business wallet. The broker or buyer verifies all documents in seconds — no uploads, no manual checks, no waiting.

This use case follows SecureStaff BV, a staffing company registering on a procurement portal, through two key moments: collecting their business credentials and sharing them with the broker for verification.

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The Practical Example

A supplier wants to register on a staffing procurement portal. Three parties are involved:

Party	Role	Example
Client (Buyer)	The organization seeking staff	Rijkswaterstaat
Broker (Intermediary)	Manages the procurement process and performs checks	FlexProcure
Supplier (Service Provider)	Provides staff, must submit proof documents	SecureStaff BV

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Part 1: SecureStaff BV Collects Its Credentials

Before SecureStaff BV can register on FlexProcure's portal, it needs five verified business credentials. The company visits each authority's portal, authenticates, and the credential is issued directly to their business wallet in the browser — no app needed, no QR codes.

1. KVK Registration Extract — issued by the Chamber of Commerce (KVK)
2. Tax Compliance Statement — issued by the Tax Authority (Belastingdienst)
3. VAT Registration — issued by the Tax Authority (Belastingdienst)
4. Bank Account Details — issued by ABN AMRO
5. Insurance Certificate — issued by Allianz

SecureStaff BV visits each portal. After authentication, the portal redirects the browser to the business wallet. The credential appears, SecureStaff BV accepts it, and it's stored — cryptographically signed, tamper-proof, and instantly verifiable. Within minutes, all five credentials are collected.

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SecureStaff BV visits the KVK portal to request a registration extract

For SecureStaff BV
All business credentials are in one place — the business wallet. No more emailing PDFs, no lost documents, no expired scans. The company controls what it shares and with whom.

For the issuers
Each authority issues credentials digitally via a simple API call. No printing, no postage, no helpdesk calls about missing documents.

Want to build this? See the full technical guide: Issue Supplier Credentials

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Part 2: SecureStaff BV Registers on the Procurement Portal

With all five credentials in its business wallet, SecureStaff BV visits FlexProcure's procurement portal. In the past, the company would upload five separate PDFs and wait days for the broker to manually verify each one.

Now, FlexProcure's portal requests all required credentials at once. The portal redirects SecureStaff BV's browser to their business wallet, which shows exactly what FlexProcure is requesting: all five business documents. SecureStaff BV reviews the request, clicks "Share", and that's it.

Within seconds, FlexProcure's system has cryptographically verified all five credentials. The company's registration is confirmed, its compliance is clear, and the insurance coverage is authentic. No phone calls, no paper, no waiting.

The portal shows: "All required documents received and verified" — and SecureStaff BV is approved as a supplier.

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SecureStaff BV starts registration on the FlexProcure portal

For SecureStaff BV
One click — all documents shared. The company stays in full control and sees exactly what the broker receives. No data is shared without explicit consent.

For FlexProcure / Rijkswaterstaat
All five documents are verified instantly and cryptographically. No risk of forged documents, no manual checks, and the onboarding process takes minutes instead of weeks.

Want to build this? See the full technical guide: Verify Supplier Credentials

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Impact

5 in 1

Single Verification
All supplier documents verified at once — no more collecting files one by one

Instant

Efficiency
Automated supplier verification reduces onboarding time from weeks to minutes

0 fraud

Fraud Prevention
Digital signatures and revocation mechanisms ensure documents cannot be falsified

Open

Standards Based
Built on OpenID4VCI and OpenID4VP — works with any compliant wallet

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The Company Passport Initiative

Credenco, through its Business Wallet technology and as part of the Company Passport initiative, collaborates with the Chamber of Commerce (KVK), the Tax Authority (Belastingdienst), the Royal Dutch Association of Civil-law Notaries (KNB), and the banking sector (NVB). Together, we deliver all the essential components to issue, exchange, and verify supplier credentials in practice.

• Suppliers request credentials directly from trusted authorities (KVK, banks, insurers, tax authorities)
• Organizations instantly verify authenticity via their Business Wallet — no PDFs, no manual checks
• New businesses can establish themselves more efficiently, including secure and verifiable bank account creation linked directly to the organization