BlockTac relies on Blockchain technology to provide inviolability, immutability and open verification for all its digital certificates and seals. It is founded on experienced professionals in Internet technologies and management. Our customers include Universities, Business Schools, Professional Associations, food and consumer product companies in Europe and Latin America.

Registered digital certification with blockchain ​​technology

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Secure Certifications and Seals with Blockchain Technology



Unique, immediately verifiable and unfalsifiable certificates for all types of academic diplomas and digital documents. Useful also for high unit value products, legal documents, and logistics management.

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Unique identifier of authenticity for each product, immediately verifiable, useless to copy, and carrying unlimited marketing information. Outstanding functionalities: End counterfeit and fraud, direct marketing channel, “nuclear” button, health alert.

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Distinctive id-Cards to solve the need for secure personal authentication, fully customizable and with an expiration date.

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Advantages for issuing entities



Certificates and stamps cannot be tampered with or manipulated.



Ensure third parties the authenticity of the identity and the information they contain.



Consumers and users can confirm the origin or authenticity of the products immediately, using only the mobile phone.



Companies and institutions do not require investments in infrastructure for its implementation.

Try this single-use digital seal!

  1. Scan the QR that appears on the right. If you have an iPhone, just open the camera, point it on the QR and follow the instructions. If you have an Android, you still need any of the App that can read QRs (Lighthing QR, WeChat, etc., whichever you prefer)
  2. This QR was in an original Olive Oil bottle. What you see is an exact copy.
    When the page with the product information appears, click on the red “Blockchain Verification” button.
  3. When you finish the verification process you will see that it tells you that the bottle was opened long ago … and that it is probably a fake.

Advantages of our Blockchain applications


The student or professional is the sovereign owner of the information and decides with whom he shares it.


Ensures that the verification activity does not require the handling and processing of information by multiple verification providers.


The registered information can be verified by third parties, such as customers, other companies, selection committees, and verification bodies.


Nothing and nobody can change the information registered in Blockchain.


Unambiguous identification of the individual or products without the possibility that the information is falsified.


Registered information is stored securely and permanently.

Cost savings

Simple system that eliminates paper traffic and complex operating procedures.


The issuers have a monitoring and control system for the verification processes of digital certificates and seals.

About us

A prominent model for the development of Blockchain-based solutions to business problems


Enrique Lizaso

Co-founder & Director - COO

Francisco Guillén

Co-founder & Director - CEO

Amaia Lorente

IT Engineer

José María Muntané

CIO - Business Partner

Lluis Torra

CMO - Business Partner

Cristina Cantón

Business Developer

Maiol Valentí

IT Engineer


Got questions? We’ve got answers. If you have some other questions, feel free to contact us.

Are the business applications with blockchain technology theoretical or real?

The applications we have developed in BlockTac respond to real and actual problems of our customers and are ready for implementation in many different industries.

What kind of companies might benefit from these applications?

Our clients include both small businesses and multinational companies. What they have in common are the objectives of differentiating their products or services, ensuring the authenticity and traceability of their offer, and establishing a direct communication channel with their customers.

Which industries may be more interested in the implementation of these applications?

Initially in those who are most affected by smuggling and fraud problems. But also industries that need to have greater control of the supply-chain or differentiate their products from those of their competitors.

Is the implementation of these applications difficult or expensive?

Not at all. BlockTac solutions are economically very efficient, do not need investments and can be implemented in less than two weeks.

Project timeline

The following steps will help you to know about our development and growth

  • 1

    Company Establishment

    April 2018 - Implementation of digital certificates with Blockchain technology

  • 2

    Technological advancement

    September/November 2018 - Implementation of digital cards and digital seals with Blockchain technology

  • 3

    They believe in us

    *February 2019 - Cuatrecasas Acelera Award *March 2019 - European Commission Award *May 2019 - Expoliva Award *October 2019 - Startup Expansion Award

  • 4

    Mass Production

    September 2019 - Reached one million certificates

  • 5


    November 2019 - Launching of the Crowdfunding campaign

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 866703.

Subsidized by CDTI

European Seal of Excellence

Startup Capital

InvestHorizon Accelerated

Newchip Accelerator

EBN35 | Innovation Network



This project has indirectly received funding from the European Union’s Horizon 2020 research and innovation programme under project Block.IS (grant agreement No 824509)

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