Proof of existence

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. .

Free
Open Source
Mac OS X
Windows
Linux
Web
Self-Hosted
Python
JavaScript
JSON

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

Links to official Proof of existence sites

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The Best 5 Proof of existence Alternatives

5 Like

Cesium

Explorer of Duniter communities network, to certify trusted peers, to generate an universal dividend, receive and send transactions.

Free Open Source Windows Linux Android Web Mac Self-Hosted (Planet) Duniter JSON

Community based Decentralized Peer To Peer Distributed
5 Like

Stampery

Stampery generates legally binding proofs of existence, integrity and ownership. Send notaries on vacation. Certify your documents easily and safely.

Free iPhone Web
3 Like

ZeroID

ZeroID - An authentication provider for the distributed network zeroNet locally : http://127.0.0.1:43110/zeroid.bit/ remotely :...

Free Open Source Mac OS X Windows Linux Python JSON
0 Like

Woleet

Blockchain timestamping and certification Software as a Service , SaaS. Woleet offers a BaaS (Blockchain as a service) platform with the following features : .

Commercial Windows Linux Mac

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Alternatives in Proof of existence for Windows, Linux, Android, Web, Mac, Self-Hosted, (Planet) Duniter, JSON, iPhone, Mac OS X, Python. This list contains a total of 5 applications similar to Proof of existence.

Last updated: 2020-07-03 01:30:33

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Proof of existence

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The Best 5 Proof of existence Alternatives

Cesium

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