Advanced Digital Signature in Your Digital Credentials: Authenticity with Legal Backing
In a world where verifying academic and professional achievements is increasingly critical, POK – Proof of Knowledge raises the standard by integrating advanced digital signatures into every issued credential. This feature allows a designated person to validate and approve each certification before publication, ensuring that no document leaves without maximum integrity, authenticity and legal backing.
Secure Pre-Approval
- Each credential goes through a review and digital signature process by an authorized user before publication.
- Errors in names, programs or dates that could affect institutional credibility are prevented.
- Ideal for institutions requiring strict quality control before any issuance.
Quote – Academic Director, University in Chile
"Before, every time there was an error in a diploma, we lost time, money and trust. With POK, the prior digital signature gives us peace of mind that every document is 100% correct before going public."
Institutional Trust with Blockchain Support
- Each digital signature is linked to the NFT credential on the blockchain, creating an immutable and verifiable record.
- Credentials cannot be modified or forged, even if shared outside the platform.
- Companies, universities and organizations can verify authenticity in seconds, without intermediaries.
Quote – CTO of University Network in Brazil
"When an employer receives a digitally signed credential in POK, they know it’s real. They don’t need to call or email to verify: the blockchain confirms it instantly."
Enhanced Reputation
- Each signed credential reflects your institution’s commitment to transparency and quality.
- Strengthens image with students, graduates, companies and regulators.
- Positions you as a differentiator compared to institutions still using easily forged PDF certificates.
Quote – President of a Private University in Mexico
"Our students feel proud to receive a certificate that is not only digital and modern but also bears the official signature of our institution backed by blockchain."
Concrete Benefits
- Maximum security: Credentials and microcredentials impossible to forge or alter.
- Time savings: Digital approval eliminates physical paperwork and streamlines processes.
- Brand value: Positions your institution as innovative and trustworthy.
Conclusion
POK is the leader in Latin America in digital credentials and is expanding strongly in the United States, Europe and Asia. Its technology combines advanced digital signature, public blockchain and NFT credentials, making each document unique, verifiable and with international legal backing.
Frequently asked questions
One of the most valued features by institutions is the ability to attach evidence to each issued credential.
This can include: PDF documents (assignments, reports, previous certificates), photos or screenshots, videos or presentation recordings, links to projects or online repositories.
This evidence objectively demonstrates compliance with the requirements for obtaining the credential.
In the NFT version, evidence can be linked to blockchain metadata, ensuring that verification includes both the credential and its supporting documents.
This is especially useful for technical certifications, professional licenses, or continuing education programs where documentary validation is key.
This can include: PDF documents (assignments, reports, previous certificates), photos or screenshots, videos or presentation recordings, links to projects or online repositories.
This evidence objectively demonstrates compliance with the requirements for obtaining the credential.
In the NFT version, evidence can be linked to blockchain metadata, ensuring that verification includes both the credential and its supporting documents.
This is especially useful for technical certifications, professional licenses, or continuing education programs where documentary validation is key.
There are no hidden costs or variable fees for using the blockchain that could surprise the customer.
In the POK model, the price of each NFT credential already includes the cost of registering the transaction on the blockchain.
This gives you budget predictability: you know exactly how much you’ll pay for each issuance, without depending on the volatility of “gas fees” on the network.
The free (Web2) version has no cost per credential and allows issuing as many as you want without limits.
In the POK model, the price of each NFT credential already includes the cost of registering the transaction on the blockchain.
This gives you budget predictability: you know exactly how much you’ll pay for each issuance, without depending on the volatility of “gas fees” on the network.
The free (Web2) version has no cost per credential and allows issuing as many as you want without limits.
With POK, verification is immediate and accessible to any third party.
In the Web2 version: each credential includes a unique link and/or QR code that, when scanned or opened, displays the complete credential details on the POK verification portal.
In the NFT version: the credential is registered on a public blockchain, so it can also be verified through a block explorer (e.g., PolygonScan). This allows confirming authenticity even if POK ceases to operate.
In both cases, verification displays information such as:
In the Web2 version: each credential includes a unique link and/or QR code that, when scanned or opened, displays the complete credential details on the POK verification portal.
In the NFT version: the credential is registered on a public blockchain, so it can also be verified through a block explorer (e.g., PolygonScan). This allows confirming authenticity even if POK ceases to operate.
In both cases, verification displays information such as:
- issuer
- holder
- issuance date
- criteria for obtaining
- status (valid, expired, or revoked)