Prove it existed. To the second.

Timestamping

Copyright, know-how, designs in progress, draft specifications, source code, contract versions: much of what matters to a business is never entered in any register. If ownership or priority is questioned later, the argument turns on what you can prove about the file and the date. A cryptographic timestamp helps address that question without disclosing the document itself.

Your document never leaves your device. Your browser derives a fingerprint from it - a short string that cannot be reversed back into the file - and only that fingerprint is sealed into the Bitcoin blockchain. Anyone can later check a copy of the document against the fingerprint, but nobody can reconstruct the content from it.

The result is a certificate you keep alongside the file and can produce in negotiations, in an ownership dispute, or before a court, where its weight is assessed case by case. It does not replace registration where registration exists - a trademark or a patent still has to be filed - but for everything that lives outside a register, it gives your account of the timeline something concrete to rest on.