Record the assignment, planning, price and hand-over points before work starts. With ProofReg Duo, both parties independently confirm the same version.
One shared reference — before any trouble starts.
ProofReg records the agreed version of your work agreement on the XRP Ledger, with an independent timestamp.
Work often starts on a spoken or quickly typed agreement: planning, price, what is and is not included. If it goes differently than expected — extra work, delays, a hand-over point the client remembers differently — it comes down to what was agreed. Record that the moment it is clear, and you have a shared reference later instead of two memories.
You put the agreement in a file (an email, PDF or photo of the notes) and record its fingerprint. Only those 64 characters go to the ledger; the file stays on your own computer.
ProofReg helps at any moment where it might later become unclear what was exactly agreed.
Put the agreement in a file and record it — 'what was agreed' is no longer a memory but a verifiable fact.
Record the base agreement, so later it is clear what is extra and what was already included.
Record the hand-over points, so it is clear afterwards what you settle on.
With phases and changes, later it counts which version was the basis.
ProofReg records your work agreement in three steps: put it in a file, record the moment, and verify it later.
An email, PDF or photo of the notes — anything works. Your browser calculates the fingerprint locally; nothing is uploaded.
The fingerprint goes onto the public XRP Ledger with a timestamp. With Duo the other party independently confirms the same version.
You receive a certificate id and verification link. Anyone can later check that this agreement existed then.
ProofReg Duo lets both parties record the same work agreement independently, and completes only on an exact match.
A work agreement has two parties, and that is exactly where the dispute arises. With Duo, you and the client each record your own copy; only when both fingerprints match exactly is Duo complete. That fixes that you both held the same agreement — not because one trusts the other, but precisely so that trust is not needed.
ProofReg Duo does not prove you agreed on everything; it proves you both held the same version of the agreement. That is exactly the point it later comes down to.
ProofReg automatically creates a certificate with every registration and anchors that certificate itself on the XRP Ledger too, at no extra cost.
You receive the certificate by email. The certificate can carry the email address it was sent to; because it is delivered by email, whoever holds it had access to that mailbox at that moment — so the proof is tied to an email address, not to a verified identity.
Because the certificate itself is on the ledger, no one can undetectably alter or backdate it afterwards — not even us. So even your proof has a proof, which anyone can verify without ProofReg.
ProofReg Duo lets two parties each record the same document independently. Only when both fingerprints match exactly does the mutual registration complete. It proves you both held the same version, not that you agreed.
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.
Record the work agreement with Duo: both parties independently register the same version. Later it is verifiably fixed what was agreed, without it being your word against theirs.
Yes, provided you first put the agreement in a file — an email, PDF or photo of the notes. ProofReg records the fingerprint of that file; the spoken agreement itself is not something ProofReg records.
Record extra work · Record a quote · ProofReg vs digital signature
Updated July 2026