Why Proovik?
Prove that your document already existed at a specific date and time. Without uploading the file, in seconds, and verifiable by anyone.
What Proovik gives you
Kaspa immutability
Once sealed on the Kaspa network, the record can no longer be changed or deleted: it lives on thousands of public nodes, not on our servers.
Learn more about KaspaTotal privacy
Your secrets are yours. We only process the cryptographic hash, never store or see your original file.
- Zero-Knowledge
- SHA-256
- Local processing
Technical evidence
Prove that a contract, a design or any important document already existed at a specific date and time. Evidence anyone can verify mathematically, without relying on Proovik.
Confirmation in seconds
Kaspa uses a proof-of-work BlockDAG that confirms transactions in seconds, not hours. Its cost per transaction is very low, which is why we can offer a free plan.
See the plansHow It Works
Simple as 1-2-3
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You choose the document
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Your browser computes the SHA-256
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You get the certificate
Ready to certify your first document?
It's free, instant and requires no registration.
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