DAS Proof — a timestamp on the XRP Ledger

Choose a file. Your browser computes its fingerprint (SHA-256) — the file itself never leaves your device. We write the fingerprint into an XRP Ledger transaction, so anyone can check that this exact file existed on that date. Verification is always free.

We write timestamps to the ledger once a day, in a batch — within 24 hours of payment.

Drop a file here, or click to select

Timestamp it — $1

Select a file first.

What does the timestamp show?

A timestamp shows that a given fingerprint was recorded on the ledger at a given time. It does not show who the author is, and it does not replace a notary or any legal procedure.

Verify — free, for anyone.

Data-processing service. Not investment advice.