The app to prove tasks & files from your phone with Blockchain

In everyday life there are situations in which you need to prove the existence of documents, photos, videos or any task done.

Online. Indelible. Traceable. Reliable. In real Time or not.

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Trusted by authorities in Blockchain

Here's how it works

Certify any graphic document. To do this, you can take photos and / or videos or select the files of your mobile photo library. Automatically, the location and date of the capture are assigned.

In companies that need to complete a report, the technician fills out a form that is attached to the documents to certify.


When photos and videos are taken, the documentation is certified, spending a certification token. An email is automatically received with the certificate of proof of existence.

Only you keep the original documents. You can share them via email, dropbox or any other cloud service.


The hash allows you to identify the document, track it and prove its inalterability, from everywhere and whenever.

Try it for free

And start certifying your work!

One solution for each need. Built for professionals and users.

Do you need more certificates?

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Everyday, professionals and users live situations that require proving the performance of tasks or the existence of documents. ByHashing offers solutions for all needs.



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