POK (Proof of Knowledge) helps organizations issue, manage and verify Open Badges 3.0 digital credentials and microcredentials on blockchain. It is intended for universities, training centers, companies, governments and other organizations certifying academic or professional achievements. Each credential has a unique link and QR code leading to a public page that shows the issuer, holder, date, skills and real-time status. A visual editor supports template design with backgrounds, logos, typefaces, signatures, custom attributes, dynamic API images, paper formats and previews. Credentials can be issued in bulk from Excel or CSV files; the free plan has no user limit or added bulk-issuance cost. Learning-system connections can trigger credentials when learners complete courses, with optional minimum-grade rules. POK connects named learning systems through LTI 1.3 and Sana through xAPI, and supports custom LTI, API keys, REST API and webhooks for other systems. It supports Open Badges 3.0, W3C Verifiable Credentials, ELM/Europass and the TrustEd Credentials Framework. The free plan has unlimited credentials, no user caps, setup fees or expiration. Blockchain verification costs $0.30 per credential; the annual license is 3000.00 USD per year for up to 50,000 credentials.
Who it is for
POK suits universities, training providers, companies, governments and other organizations issuing academic or professional credentials. It may fit teams that need bulk issuance, learning-system automation or publicly verifiable credentials.
What is good
- Free plan has unlimited digital credentials.
- No user caps or setup fees on the free plan.
- Bulk issuance from Excel or CSV files.
- Public credential pages show issuer, holder and status.
- Integrates with named learning systems and APIs.
What to know first
- Blockchain verification costs $0.30 per credential.
- Annual blockchain license costs 3000.00 USD per year.
- Annual license covers up to 50,000 credentials per year.
- NFT Ownership pricing varies by prepaid pack.
Verdict
POK combines credential design, bulk issuance and public verification with learning-system integrations. The free plan covers digital credentials, while blockchain verification has separate per-credential and annual pricing.
POK plans and pricing
All plansCompared on credentialing software
- Free plan
- Yes
- Digital certificates
- Yes
- Digital badges
- Yes
- Public verification
- Yes
- Expiry management
- Yes
- Custom branding
- Yes
- API access
- Yes
