The falsification or alteration of documents of value for people and companies is a big problem that affects them economically and reputationally. That is why at Certika our mission is to combat this crime with technology. Certika is a web platform created to guarantee the immutability and authenticity of public and private documents of a person or company. Certika uses blockchain technology to guarantee the impossibility of a document being altered, allowing it to be shared digitally without fear of being altered or falsified.