The certification service calculates the cryptographic digest of your document client-side.
Alternatively, you can calculate and submit your document data using
See the Developer API for more information, read our about page,
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Want this document certified by a decentralized proof of existence?
We can embed the document's digest in the blockchain for you!
You'll need to pay 2 mBTC to do so, to cover our costs. Please pay to the following address:
In case you are curious, we are waiting for a transaction to occur in the Bitcoin network containing a cryptographic proof of your document's existence. This will embed the document's digest in the blockchain permanently.
This document's digest was successfully embedded in the Bitcoin blockchain. It is now permanently certified and proven to exist since the transaction was confirmed.
If you want to verify this document in the future, just re-submit it in the homepage and we'll recognize and validate it. To manually verify the document was certified in the blockchain, follow the steps detailed in the technical foundations section.