ProofReg records the SHA-256 fingerprint of a file on the XRP Ledger, so it stays checkable later which version existed at which moment. Below is where that makes the difference, situation by situation — from a quote to a design. Your file never leaves your computer.
Everyday agreements are the documents that later cause the most disagreement. ProofReg records the fingerprint of the version that applied at that moment.
Record which price and terms you offered, before the client comes back on it.
As the recipient you can record which quote you received — the sender does not have to do anything.
Record what was ordered and delivered, at the moment the slip is written.
Record which assignment you confirmed, with an independent timestamp attached.
Record an agreement about work, planning or delivery before the work starts.
Record what was agreed on top, at the moment it is agreed.
Record which version of an agreement was on the table when both parties looked at it.
Deadlines call for proof that a document existed in time. ProofReg records that the fingerprint existed before the ledger timestamp.
Designs and ideas often exist long before they are shared. ProofReg records that a file existed in exactly that form at a given moment — not who made it.
Duo lets two parties record the same document independently of each other. Only on an exact match does the mutual registration complete.
Comparing helps to see what ProofReg is and is not meant for. A fingerprint on the ledger does something different from a signature.
ProofReg records that this exact SHA-256 fingerprint, with the label and registrant you entered, existed on the XRP Ledger before the recorded ledger timestamp. That is independent and publicly verifiable, without sharing the document.
No. Your browser calculates the SHA-256 fingerprint locally. Only those 64 characters, plus an optional label or registrant you choose, are recorded. The file never leaves your computer.
A registration costs from €1, paid with credits. Verifying a certificate is always free and account-free.
Yes. A ProofReg certificate states the fixed anchoring account, the certificate id and the issue date. With those, it can be verified in a few steps on any public XRP Ledger explorer, without ProofReg.
What it proves · About ProofReg · Verification specification
Updated July 2026