Proof of existence

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Allows to certify a document ( of any format ? ), it gives a fingerprint relative to the date of the certification and it is stored in an online "Bitcoin blockchain". It can also verify the integrity of a document.

License model

  • Free • Open Source

Country of Origin

  • AR flagArgentina

Platforms

  • Mac
  • Windows
  • Linux
  • Online  Requires a Bitcoin wallet and the transfer of some Bitcoins
  • Self-Hosted
  • Python
  • JSON
  • JavaScript
  • Bitcoin
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  1.  Certification

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Proof of existence information

  • Developed by

    AR flagManuel Araoz

  • Licensing

    Open Source and Free product.

  • Alternatives

    7 alternatives listed

  • Supported Languages

    • English

Our users have written 0 comments and reviews about Proof of existence, and it has gotten 5 likes

Proof of existence was added to AlternativeTo by trylks on Oct 29, 2014 and this page was last updated Dec 21, 2017.
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What is Proof of existence?

Use our service to anonymously and securely store an online distributed proof of existence for any document. Your documents are NOT stored in our database or in the bitcoin blockchain, so you don't have to worry about your data being accessed by others.

All we store is a cryptographic digest of the file, linked to the time in which you submitted the document. In this way, you can later certify that the data existed at that time. This is the first online service allowing you to publicly prove that you have certain information without revealing the data or yourself, with a decentralized certification based on the bitcoin network.

The key advantages are anonymity, privacy, and getting a decentralized proof which can't be erased or modified by anyone (third parties or governments). Your document's existence is permanently validated by the blockchain even if this site is compromised or down, so you don't depend or need to trust any central authority. All previous data timestamping solutions lack this freedom.

Source code : https://github.com/maraoz/proofofexistence

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