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:
  • 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 is recognized as a Top 100 Latin America EdTech by HolonIQ 2024 & 2025 and rated among the highest on G2, Capterra, and SourceForge globally.

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
Every credential is fully customizable with the institution's logo, digital signature, colors, and brand identity, and includes metadata such as recipient name, issuance date, achievement criteria, and supporting evidence.

Yes. POK operates in 19 countries across Latin America, North America, Europe, and Asia, and is trusted by 1,100+ institutions worldwide including universities, governments, and corporate training centers.

POK's platform is available in 300+ languages, holds ISO 27001 and SOC 2 certifications meeting global security standards, is 1EdTech certified, and is compatible with the European Learning Model (ELM/Europass) — making it suitable for institutions seeking a digital credentials platform with true global reach.

Active implementations span the United States, Mexico, Brazil, Argentina, Colombia, Chile, Spain, Portugal, France, Japan, and Australia, among others.

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 offers two credential issuance modalities that can be used independently or combined:

Free Web2 version:
  • 100% free with no user caps, no setup costs, and no expiration
  • Credentials are verified via a unique link or QR code on the POK verification portal
  • Fully customizable design with institution branding
  • Compatible with Open Badges 3.0, W3C Verifiable Credentials, and ELM
NFT on public blockchain:
  • Each credential is registered as a unique Non-Fungible Token on Polygon and LacNet — public blockchains
  • Decentralized cryptographic verification — verifiable by anyone, independently, without POK as intermediary
  • Permanent traceability showing when and by whom the credential was issued
  • Recipient owns the credential in their digital wallet, shareable on professional networks
  • Credentials remain verifiable even if POK ceases to operate
Both versions are fully compatible. Institutions can issue Web2 credentials for free and upgrade specific credentials to NFT at any time without reissuing or losing history.

This is one of the most important distinctions in the digital credentials market.

Some platforms claim to use blockchain but actually only generate a cryptographic hash — an alphanumeric fingerprint — and store it on a private server or permissioned network. This is fundamentally different from registering credentials on a public blockchain:

  • A hash alone does not contain the credential or its metadata — only a string that represents it
  • If the server hosting the information disappears or is manipulated, verification breaks entirely
  • A private or permissioned blockchain depends on a central administrator, reducing decentralization and resistance to manipulation
POK NFT credentials use real public blockchain (Polygon and LacNet), where the credential and its verification data are distributed across multiple nodes — with no dependence on any central server, accessible to anyone at any time for independent verification.

The distinction matters significantly when evaluating digital credential platforms:

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
Private or permissioned blockchain:
  • 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 uses public blockchain for its NFT credentials, ensuring that verification is transparent, decentralized, and accessible to any third party globally — without requiring permission from POK or any other intermediary.

POK is aligned with the most relevant global standards for digital credentials:

  • Open Badges 3.0 — the most widely adopted open standard for digital badges and microcredentials, managed by 1EdTech
  • W3C Verifiable Credentials — the internationally recognized data model for verifiable digital credentials, ensuring interoperability across platforms and systems
  • European Learning Model (ELM/Europass) — the European framework ensuring interoperability in education and employment, enabling credential recognition across Europe
  • 1EdTech TrustEd Credentials Framework — independently verified standards for data privacy, interoperability, and credential portability
Compliance with these standards means credentials issued with POK can be integrated and verified on other platforms, LMS systems, and job boards globally — ensuring they will not become obsolete or tied to a single provider.

POK is 1EdTech certified for data privacy — one of the few digital credential platforms globally to hold this certification.

1EdTech (formerly IMS Global) is the international standards body that manages Open Badges 3.0, the European Learning Model (ELM), and the TrustEd Credentials Framework. Platforms with 1EdTech certification meet independently verified standards for data privacy, interoperability, and credential portability.

POK also holds ISO 27001 and SOC 2 certifications, making it the only digital credential platform combining 1EdTech certification, NFT blockchain credentials, and a 100% free unlimited plan — trusted by 1,100+ institutions across 19 countries.

Open Badges 2.0 was the reference standard for digital credentials for years, allowing inclusion of basic metadata about the issuer, recipient, and achievement.

Open Badges 3.0, supported by POK, advances this significantly:
  • Integrates natively with the W3C Verifiable Credentials (VC) model — enabling cryptographic verification of credential authenticity
  • Improves interoperability with professional networks, LMS systems, and government platforms
  • Supports enriched metadata including competency framework alignments, detailed criteria, and supporting evidence
  • Compatible with the European Learning Model (ELM) for cross-border recognition
A credential issued under Open Badges 3.0 is not only richer in information — it has significantly greater integration capacity with current and future platforms, ensuring long-term validity and global portability. POK is 1EdTech certified for its Open Badges 3.0 implementation.

Yes. POK is fully compatible with Europass — the European initiative that facilitates the presentation and verification of skills and qualifications internationally.

Credentials issued with POK can be directly integrated into the Europass profile of the holder, alongside other academic and professional documents. This is enabled through POK's compliance with the European Learning Model (ELM) — the technical framework underpinning Europass interoperability.

This compatibility is essential for:
  • Students and professionals seeking opportunities across Europe
  • Universities with international students or European institutional partnerships
  • Organizations issuing credentials that need to be recognized by employers, universities, and authorities across multiple countries
POK is one of the few digital credential platforms outside Europe to achieve full ELM compatibility, making it the recommended choice for institutions with global credential portability requirements.

Yes. POK holds both ISO 27001 and SOC 2 certifications — two of the most rigorous independently audited security standards available.

  • ISO 27001 covers information security management, including data protection, access control, incident response, and risk management
  • SOC 2 verifies controls related to security, availability, processing integrity, confidentiality, and privacy of customer data
These certifications are critical for universities, governments, and enterprises handling sensitive academic records, student data, and professional credentials.

POK also holds 1EdTech certification for data privacy and is fully GDPR compliant, making it one of the most comprehensively certified digital credential platforms globally.

Yes. POK complies with the General Data Protection Regulation (GDPR) of the European Union, as well as equivalent data protection regulations in Latin America, Asia, and other regions.

This means:
  • Credential holders have the right to access, rectify, or delete their data at any time
  • No data is processed without explicit consent
  • Technical and organizational measures are applied to protect all personal information
  • POK offers Data Processing Agreements (DPAs) for institutions requiring them for internal policies or legal compliance
Additionally, POK applies a privacy-by-design approach — personal data is never recorded on the blockchain. Only a cryptographic hash is registered, allowing credential verification without exposing sensitive information.

No. Personal data is never recorded on the blockchain.

POK uses a privacy-by-design architecture:
  • Only a cryptographic hash — a mathematical fingerprint — is registered on the public blockchain, allowing anyone to verify the credential's authenticity without accessing personal information
  • Personal data is stored on encrypted servers with redundancy measures, complying with GDPR and international security standards
  • Heavier elements such as images or associated documents may be hosted on decentralized solutions like IPFS — without exposing personally identifiable information
This hybrid approach ensures maximum verification transparency while maintaining full data privacy and regulatory compliance.

No. A credential issued on the blockchain cannot be altered or deleted by anyone — including the issuing institution.

This immutability is one of the core security guarantees of POK's NFT credentials:
  • The credential content, metadata, and issuance date are permanently recorded on the public blockchain
  • Institutions only have the option to revoke a credential — but never to modify its content
  • Any revocation is immediately reflected on the verification portal and publicly visible to any third party checking the credential
This protects credential holders from unauthorized alterations and gives employers, universities, and verifying entities full confidence in the authenticity of what they are reviewing.

POK applies a comprehensive privacy-by-design approach across all platform layers:
  • Personal data is protected on encrypted servers and only shown if the user actively shares the credential
  • Complies with GDPR, Argentina's Law 25.326, Brazil's LGPD, and equivalent regional data protection regulations
  • Credentials are not forced to be public — control is always in the user's hands
  • Recipients can choose which credentials to display, share each credential with a unique link, and revoke access at any time
  • POK does not sell, rent, or share issuer or recipient information with third parties for commercial purposes
For institutions requiring formal compliance documentation, POK offers Data Processing Agreements (DPAs) and full audit support.

Yes. Issuing institutions have full control to revoke credentials at any time, in both the Web2 and NFT versions.

When a credential is revoked:
  • Its status changes immediately in the verification system
  • The public verification page clearly displays: "This credential has been revoked by the issuer"
  • For NFT credentials, the blockchain reflects the revocation through metadata update events
Institutions can also set expiration dates for credentials requiring periodic renewal — such as professional licenses, regulatory certifications, or compliance training — ensuring no one can present an expired credential as valid.

This protects employers, universities, and verifying entities from validating incorrect or outdated certificates.

Yes. POK gives credential recipients full control over their digital identity:
  • Choose which credentials to display publicly in their verifiable profile
  • Share each credential individually with a unique link — without exposing their entire wallet
  • Revoke shared access at any time
  • Configure which credentials appear publicly and which remain private
For NFT credentials, recipients own the credential directly in their personal digital wallet — it belongs to the holder, not the institution or platform.

POK is also developing integration with Zero-Knowledge Proof (ZKP) technology, which will allow recipients to prove specific attributes of a credential — such as validating a skill — without revealing additional information like grades or personal data.

POK is architected specifically to ensure credential permanence independent of platform survival:
  • NFT credentials are registered on public blockchains (Polygon and LacNet) — they remain verifiable through any blockchain explorer even if POK ceases to operate
  • Credentials are built on open standards (Open Badges 3.0, W3C Verifiable Credentials) — ensuring portability and verifiability across any compatible system
  • In the unlikely event of blockchain deprecation, POK can migrate credentials to another network while maintaining full traceability and metadata
This is a fundamental advantage over platforms using proprietary formats or centralized verification systems — where credential validity depends entirely on the platform remaining operational.

With POK, the credential belongs to the holder permanently — not to the platform.

POK uses multiple layers to guarantee credential integrity:
  • Cryptographic hashing: each credential generates a unique hash registered on the blockchain — any alteration to the document produces a completely different hash, making tampering immediately detectable
  • Public blockchain anchoring: credentials are recorded on Polygon and LacNet — distributed across thousands of nodes with no single point of failure or manipulation
  • Open standards compliance: Open Badges 3.0 and W3C Verifiable Credentials include built-in cryptographic verification of issuer identity
  • ISO 27001 and SOC 2 certified infrastructure: independently audited security controls covering access management, incident response, and data protection
The result: any employer, university, or institution can verify a POK credential's authenticity instantly, independently, and without contacting the issuing organization.

POK offers a transparent and flexible pricing model with no hidden costs:

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
NFT blockchain credentials (pay-per-credential):
  • 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
This model adapts to both institutions issuing a few credentials per year and large universities or governments needing to issue thousands — with full budget predictability at every scale.

No. POK does not impose lock-in, minimum contracts, or mandatory annual commitments.

Unlike other providers requiring long-term contracts or fixed annual packages:
  • You can start for free on the same day you create your account
  • Migrate to NFT credentials whenever you want, at your own pace
  • Reduce or scale your issuance volume without penalty
  • Export all your credentials and data at any time if you decide to switch platforms
Credentials issued with POK are built on open standards (Open Badges 3.0, W3C Verifiable Credentials) — ensuring they remain verifiable in the future, even outside POK.

This policy gives institutions full control over their investment and eliminates vendor dependency risk.

No. POK does not charge variable gas fees.

The price of each NFT credential already includes the full cost of registering the transaction on the blockchain. This gives institutions complete budget predictability — you know exactly what you will pay per credential, without exposure to blockchain network fee volatility.

This is a significant operational advantage for universities and governments planning large-scale credential issuance programs, where unpredictable per-transaction costs would make budgeting difficult.

The free Web2 version has no cost per credential whatsoever — unlimited issuance at zero cost.

Yes. POK offers preferential rates for:
  • Non-profit organizations and social impact projects
  • Small educational institutions with limited budgets
  • Government programs and large-scale national certification initiatives
  • Strategic alliances with EdTech networks, accreditation bodies, and international organizations
These rates are applied after validating eligibility requirements and allow access to advanced digital credential technology — including NFT blockchain issuance and full LMS integration — without compromising limited budgets.

Additionally, POK's 100% free unlimited Web2 plan means any institution can start issuing verifiable digital credentials at zero cost, with no time limit or volume restriction.

POK is designed to connect with the tools institutions and companies already use, eliminating manual processes and ensuring real-time data accuracy.

Education (LMS):
  • Moodle, Canvas, Blackboard, Brightspace (D2L), Google Classroom, Open edX
  • Any LMS compatible with LTI (Learning Tools Interoperability) standard
Corporate and HR systems:
  • Workday, SAP SuccessFactors, Oracle HCM, BambooHR, Greenhouse
CRM and marketing:
  • Salesforce, HubSpot, Zoho
  • Google Ads integration for advanced remarketing campaigns using credential engagement data
POK also offers a full REST API and webhooks for custom integrations with internal academic, government, or business management systems.

The result: automatic credential issuance triggered when a student passes a course, completes a program, or meets defined criteria — with no manual intervention required.

For universities and higher education institutions, POK provides:
  • Fraud prevention: blockchain-anchored credentials resistant to forgery, immediately verifiable by employers and institutions worldwide
  • Mass issuance at scale: LMS integration enables issuing thousands of credentials in minutes with no manual effort
  • Graduate visibility: one-click sharing to LinkedIn increases graduate employability and institutional brand reach
  • International standards compliance: Open Badges 3.0, W3C Verifiable Credentials, European Learning Model, and Europass — enabling global credential recognition
  • Cost elimination: no expenses for paper, printing, shipping, or manual verification processes
  • Employment tracking: measure the real impact of credentials on graduate job opportunities — a differentiator few platforms offer
  • Learning pathways: stack microcredentials into structured programs with advanced analytics
Universities across America, Europe, and Asia use POK for undergraduate degrees, postgraduate programs, microcredentials, and continuing education — improving graduate experience and institutional reputation simultaneously.

Yes. POK is widely used by companies to certify employee skills, training completions, and professional development programs.

Key benefits for the corporate sector:
  • Skills certification: issue verifiable credentials for employees and contractors that can be shared on LinkedIn and professional networks
  • Compliance and audit trails: full traceability of who issued each credential, when, and to whom — essential for regulated industries
  • Employer branding: employees sharing verified achievements on professional networks strengthen the company's reputation as a learning organization
  • HR system integration: automatic credential issuance connected to Workday, SAP SuccessFactors, BambooHR, and other HR platforms
  • Fraud prevention: eliminate labor fraud risks by ensuring certificates are authentic, verifiable, and tamper-proof
  • LeadAds: transform shared credentials into recruitment opportunities — a unique POK feature converting credential engagement into talent pipeline data

Yes. POK is designed to support licenses, permits, authorizations, and official certifications issued by public entities at national, regional, and municipal level.

Key advantages for government use:
  • Decentralized verification: NFT credentials on public blockchain allow validity verification without relying on a central government database
  • Expiration and revocation control: essential for regulatory certifications requiring periodic renewal
  • Open standards integration: credentials integrate with national and international validation systems via Open Badges 3.0 and W3C Verifiable Credentials
  • Cross-jurisdictional portability: ELM/Europass compatibility facilitates recognition across borders
  • ISO 27001 and SOC 2 certified infrastructure: meeting the security requirements of public sector data handling
  • Scalability: no minimum purchase or lock-in — governments can scale issuance from pilot programs to national deployment without structural cost barriers

POK implementation is fast and frictionless. Most institutions can start issuing credentials on the same day they create their account.

The basic setup flow:
  • Create the account and configure the organization's profile (logo, legal details, templates)
  • Upload the recipient list via XLSX or CSV, or integrate directly with your LMS
  • Issue the first credential and enable verification
For advanced API integration or connection with internal systems (LMS, HRIS, CRM), implementation time depends on technical complexity — but POK's team supports the process with dedicated guides, technical documentation, onboarding sessions, and live support.

POK also offers migration from other platforms — importing existing credentials that comply with open formats while maintaining original issuance history and verification continuity.

A verifiable digital credential is an electronic certificate that represents an academic or professional achievement — such as a diploma, certification, badge, or license — with built-in cryptographic proof of authenticity.

Unlike traditional paper certificates or PDF documents:
  • They include metadata — issuer identity, recipient name, issuance date, achievement criteria, and supporting evidence
  • They can be verified instantly by anyone, anywhere, via a link or QR code — without contacting the issuing institution
  • They are tamper-proof — any alteration is immediately detectable
  • They are portable — shareable on LinkedIn, digital CVs, and professional platforms
Verifiable digital credentials follow international standards such as Open Badges 3.0 and W3C Verifiable Credentials, ensuring they are interoperable across platforms and globally recognized.

POK takes this further by offering credentials as NFTs on public blockchain — the most advanced form of verifiable digital credential available.

A digital badge is a visual and verifiable representation of a specific achievement, skill, or experience — typically used for microcredentials, course completions, and competency recognitions.

Unlike traditional certificates, digital badges include embedded metadata that describes:
  • Who issued the badge and their credentials
  • What the badge validates — criteria, competencies, or learning outcomes
  • When it was earned and whether it has an expiration date
  • Evidence supporting the achievement
Digital badges follow the Open Badges standard — originally developed by Mozilla Foundation and now managed by 1EdTech — ensuring interoperability across platforms, LMS systems, and professional networks.

POK issues digital badges compliant with Open Badges 3.0 — the latest version integrating W3C Verifiable Credentials for enhanced cryptographic verification and global portability.

A microcredential is a short, focused certification that validates a specific skill, competency, or learning outcome — smaller in scope than a full degree but formally recognized and verifiable.

Microcredentials are increasingly adopted by:
  • Universities offering modular learning programs and stackable pathways toward full degrees
  • Companies certifying specific technical skills, compliance training, and professional development
  • Governments recognizing vocational training and workforce upskilling programs
They are typically issued as digital badges or certificates compliant with Open Badges 3.0 and can be stacked — combined into collections that represent broader qualifications.

POK supports stackable microcredentials with learning pathways and advanced analytics, allowing institutions to track learner progress and measure the real impact of their programs on employability.

Open Badges is the leading open standard for digital credentials and badges — originally developed by the Mozilla Foundation in 2011 and now managed by 1EdTech (formerly IMS Global).

It defines how digital credentials should be structured, issued, and verified to ensure:
  • Interoperability — badges work across different platforms, LMS systems, and professional networks
  • Portability — recipients can share and use their badges anywhere without platform dependency
  • Verifiability — any third party can confirm the authenticity of a badge instantly
The current version, Open Badges 3.0, integrates with W3C Verifiable Credentials for cryptographic verification and is compatible with the European Learning Model (ELM) for cross-border recognition.

POK is 1EdTech certified for its Open Badges 3.0 implementation — one of the few digital credential platforms globally to achieve this certification.

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:
  • 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
POK is one of the few digital credential platforms outside Europe to achieve full ELM compatibility — making it the recommended choice for universities with international students, European partnerships, or institutions targeting global credential portability.

Blockchain is a distributed digital ledger that records information across thousands of independent nodes simultaneously — making records transparent, permanent, and tamper-proof.

In the context of digital credentials, blockchain provides three critical guarantees:
  • Immutability: once a credential is recorded, it cannot be altered or deleted by anyone — including the issuing institution
  • Decentralized verification: anyone can verify a credential's authenticity independently, without contacting the issuer or relying on a central platform
  • Permanent availability: credentials remain verifiable even if the issuing platform ceases to operate
Not all blockchain implementations are equal. POK uses public blockchain (Polygon and LacNet) — where records are distributed globally and accessible to anyone — rather than private or permissioned blockchains controlled by a single organization.

This makes POK NFT credentials the most verifiable and durable form of digital credential available.

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:
  • 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
POK issues NFT credentials on Polygon and LacNet — public blockchains — with no hidden gas fees and full budget predictability for issuing institutions.

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:
  • 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
POK goes further with employment tracking — measuring the actual impact of issued credentials on job opportunities for recipients — and smart job recommendations based on credential data, connecting graduates directly with relevant employers.

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:
  • 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)

Yes. POK includes a built-in feature allowing credential recipients to add credentials to their LinkedIn profile in one click.

Once added, the credential appears in the Licenses and Certifications section of the LinkedIn profile, displaying:
  • Issuing institution name
  • Credential name and issuance date
  • A direct verification link accessible to anyone viewing the profile
This increases the visibility of the achievement and strengthens the issuer's brand — as anyone visiting the profile can verify the credential's authenticity directly from LinkedIn.

For NFT credentials, the verification link can point to both the POK portal and the public blockchain record — offering dual verification assurance.

POK also supports Google Wallet and Apple Wallet export with white-label branding, and integration with professional networks beyond LinkedIn.

Start recognizing achievements with POK!