Global digital credentials platform
The global platform for verifiable digital credentials and microcredentials
POK - Proof of Knowledge is the go-to platform for issuing verifiable digital credentials and microcredentials. Trusted by 1,100+ institutions in 19 countries.
Free plan included · Open Badges 3.0 · ISO 27001 · SOC 2
+1.5M
Credentials issued
+1,100
Institutions
19
Countries
100%
100% free plan
Global community
Institutions that trust POK to issue verifiable digital credentials
For every institution
Universities, governments, and companies trust POK
POK - Proof of Knowledge adapts to organizations of any size and sector, with the same free unlimited plan for everyone.
Education
Universities and educational institutions
Issue diplomas, certificates, and microcredentials with blockchain backing. Compatible with Moodle, Blackboard, Canvas, and 50+ integrations.
Open Badges 3.0
Moodle
Europass
1EdTech
Enterprise
Companies and corporations
Certify internal training, courses, and professional achievements for your teams. Native integration with Moodle, Canvas, Blackboard, and more.
White Label
API
Moodle
Canvas
Blackboard
Public sector
Governments and public agencies
Issue credentials with official and international validity. ISO 27001, SOC 2, and compliant with the European Learning Model (ELM/Europass).
ISO 27001
SOC 2
ELM/Europass
W3C
Global standards
Internationally recognized and certified
POK - Proof of Knowledge complies with the leading global standards for digital credentials and information security.🏅
1EdTech Open Badges 3.0
POK is a 1EdTech-certified platform for Open Badges 3.0. Your credentials are interoperable with any compatible system.
🌐
W3C Verifiable Credentials
All credentials follow the W3C Verifiable Credentials standard, ensuring universal validity.
🎓
European Learning Model (ELM/Europass)
Compatible with the European Learning Model, accepted across the European Union.
🛡️
ISO 27001 · SOC 2
Security certifications that guarantee the protection of your institution's data.
For every institution
Why POK credentials are more secure and verifiable
We compare how digital credentials work in POK versus traditional platforms.
| POK - Proof of Knowledge | Traditional platforms | |
|---|---|---|
| Credential ownership | ✓ Holder's, forever | ✗ Provider's |
| If the platform disappears | ✓ Credential remains valid | ✗ Access is lost |
| Verification | ✓ Public and independent | ✗ Depends on the provider |
| Security | ✓ Immutable public record | ✗ Private servers, vulnerable |
| Standards | ✓ Open Badges, W3C, ISO 27001 | ✗ Variable |
Detailed comparisons
See how POK compares to each platform:
Verified reviews
The highest rated digital credentials platform
59+ verified reviews on G2, Capterra, GetApp, and Software Advice. 5/5 stars average from HR, education, and certification teams.
Blog
Latest Articles
Frequently asked questions
POK (Proof of Knowledge) is a global platform designed to issue, manage, and verify digital credentials securely, interoperably, and scalably. It is intended for universities, training centers, companies, governments, and organizations seeking to certify academic or professional achievements with maximum reliability.
Unlike other providers, POK combines ease of use with compliance to the highest international standards: OpenBadge 3.0, W3C Verifiable Credentials, and European Learning Model. This ensures that issued credentials can be shared and verified anywhere in the world.
POK offers two modalities:
With over 1,100 institutions in America, Europe, and Asia, POK is the solution for those seeking to combine innovation, security, and flexibility in credential issuance.
Unlike other providers, POK combines ease of use with compliance to the highest international standards: OpenBadge 3.0, W3C Verifiable Credentials, and European Learning Model. This ensures that issued credentials can be shared and verified anywhere in the world.
POK offers two modalities:
- Free (Web2): unlimited digital credentials, without expiration, verifiable by link or QR code, without lock-in or hidden costs.
- NFT (Public Blockchain): credentials registered as unique tokens, with permanent traceability and decentralized verification.
With over 1,100 institutions in America, Europe, and Asia, POK is the solution for those seeking to combine innovation, security, and flexibility in credential issuance.
POK differentiates itself in five key areas:
- Only platform combining a 100% free unlimited plan with NFT blockchain credentials — no user caps, no setup costs, no expiration, and no lock-in.
- Security certifications: ISO 27001 and SOC 2 — independently audited standards for data protection and access management. Few credential platforms globally hold both.
- 1EdTech certified for data privacy — the international body managing Open Badges 3.0, ELM, and the TrustEd Credentials Framework.
- European Learning Model (ELM/Europass) compatible — enabling credential recognition across Europe and markets adopting this framework.
- Employment tracking and learning pathways — measuring the real impact of credentials on job opportunities, not just issuance.
POK supports issuing any type of verifiable digital credential:
- Academic credentials: diplomas, degrees, and university certificates
- Professional certifications: technical licenses, industry certifications, and continuing education
- Corporate recognitions: employee training, leadership programs, and internal skills certifications
- Microcredentials and badges: specific skill achievements, course completions, and stackable learning pathways
- Government certifications: licenses, permits, and official authorizations with expiration and revocation control
Yes. POK is trusted by 1,100+ institutions across 19 countries, has issued over 1.5 million credentials, and has been recognized as a Top 100 Latin America EdTech by HolonIQ in both 2024 and 2025.
POK is 1EdTech certified, holds ISO 27001 and SOC 2 security certifications, and is compatible with the European Learning Model (ELM/Europass) — enabling credential recognition across Europe, Latin America, North America, and markets adopting open credential standards globally.
POK is also rated among the highest on G2, Capterra, and SourceForge globally, reflecting consistent institutional trust across regions.
POK is 1EdTech certified, holds ISO 27001 and SOC 2 security certifications, and is compatible with the European Learning Model (ELM/Europass) — enabling credential recognition across Europe, Latin America, North America, and markets adopting open credential standards globally.
POK is also rated among the highest on G2, Capterra, and SourceForge globally, reflecting consistent institutional trust across regions.
The distinction matters significantly when evaluating digital credential platforms:
Public blockchain (e.g., Polygon, Ethereum):
Public blockchain (e.g., Polygon, Ethereum):
- Open network where anyone can read and verify records independently
- Data distributed across thousands of nodes — maximum resistance to manipulation
- Credential verification does not depend on any single organization remaining operational
- Managed by an organization or consortium controlling who can access and record information
- Faster and cheaper to operate, but depends on a central administrator
- If the administrator disappears or restricts access, credential verification may be compromised
POK offers a transparent and flexible pricing model with no hidden costs:
Free unlimited Web2 plan:
Free unlimited Web2 plan:
- Issue and verify unlimited digital credentials at no cost
- No user caps, no setup fees, no expiration, and no lock-in
- Full access to customization, Open Badges 3.0, ELM compatibility, and LMS integrations
- Purchase credential packages based on your needs — no minimum commitment and no credit expiration
- Price per credential includes blockchain registration — no additional gas fees or variable costs
- Volume pricing available for universities and large organizations issuing at scale
The European Learning Model (ELM) is a data framework developed by the European Commission to ensure interoperability of learning credentials across Europe — enabling digital diplomas, certificates, and microcredentials to be recognized consistently by employers, universities, and authorities in different countries.
ELM is the technical foundation of Europass — the European platform for sharing skills and qualifications internationally.
Key benefits of ELM compatibility for institutions:
ELM is the technical foundation of Europass — the European platform for sharing skills and qualifications internationally.
Key benefits of ELM compatibility for institutions:
- Credentials are recognized across EU member states and partner countries
- Enables automatic integration with Europass profiles
- Facilitates academic and professional mobility for students and graduates
- Future-proofs credentials as European digital credential infrastructure continues to expand globally
An NFT credential is a verifiable digital certificate issued as a Non-Fungible Token on a public blockchain — the most advanced and durable form of digital credential available.
Unlike traditional digital certificates:
Unlike traditional digital certificates:
- It is unique and non-reproducible — each NFT is a distinct record on the blockchain
- It contains all relevant metadata — recipient name, issuance date, issuer identity, achievement criteria, and supporting evidence
- It can be verified independently by anyone — without requiring the platform or issuing institution to be operational
- The recipient has true digital ownership — the credential lives in their personal wallet, not on a company's server
- It is permanently traceable — showing when and by whom it was issued, with a complete audit trail
Digital credentials improve employability by making skills and achievements instantly verifiable, easily shareable, and globally portable — addressing the core challenge employers face when evaluating candidates.
Key ways digital credentials create employment impact:
Key ways digital credentials create employment impact:
- LinkedIn visibility: one-click sharing to LinkedIn's Licenses & Certifications section increases profile strength and recruiter discovery
- Instant verification: employers can confirm authenticity in seconds via link or QR code — no need to contact the issuing institution
- Rich metadata: credentials include detailed information about skills, competencies, and criteria — giving employers context beyond a certificate name
- Fraud prevention: blockchain-anchored credentials are tamper-proof, increasing trust in presented qualifications
Verification with POK is instant and accessible to any third party — no account, no registration, and no contact with the issuing institution required.
Web2 credentials: each credential includes a unique link and QR code. When opened, it displays full credential details on the POK verification portal — issuer, recipient, issuance date, criteria, and current status (valid, expired, or revoked).
NFT credentials: in addition to the POK portal, NFT credentials can be verified directly through a public blockchain explorer (e.g., PolygonScan) — confirming authenticity even if POK ceases to operate.
Both verification methods display:
Web2 credentials: each credential includes a unique link and QR code. When opened, it displays full credential details on the POK verification portal — issuer, recipient, issuance date, criteria, and current status (valid, expired, or revoked).
NFT credentials: in addition to the POK portal, NFT credentials can be verified directly through a public blockchain explorer (e.g., PolygonScan) — confirming authenticity even if POK ceases to operate.
Both verification methods display:
- Issuing institution and their verified identity
- Credential holder name
- Issuance date and expiration (if applicable)
- Criteria for obtaining the credential
- Current status — valid, expired, or revoked
- Supporting evidence (if attached by the issuer)
