Record which price and terms you were offered — before the supplier changes them afterwards. With ProofReg Duo, you both independently confirm the same version.
The price you were offered is fixed, even if the other side changes it later.
ProofReg records the exact version of the quote you received on the XRP Ledger, with an independent timestamp.
It is not only the sender who benefits from proof — you as the recipient do too. You get a sharp price, you plan around it, and when the assignment starts the amount is suddenly higher. Record the quote the moment you receive it, and later it is beyond doubt which price and terms you were offered.
You put the received quote in a file (the PDF or the email) and record its fingerprint. Only those 64 characters go to the ledger; the file stays yours.
ProofReg helps at any moment where the supplier might later present the quote differently.
Record the price, so it cannot quietly go up later.
Record what it stated within the term you had to decide.
Record each version, so it is clear what each party offered.
The larger the amount, the more a fixed reference matters.
ProofReg records the received quote in three steps: put it in a file, record the moment, and verify it later.
Save the received quote as a PDF or keep the email. Your browser calculates the fingerprint locally; nothing is uploaded.
The fingerprint goes onto the public XRP Ledger with a timestamp. With Duo the supplier independently confirms the same version.
You receive a certificate id and verification link. Anyone can later check that this quote existed then.
ProofReg Duo lets recipient and supplier record the same quote independently, and completes only on an exact match.
With Solo you record the received quote — enough to show that and when you held that version. With Duo the supplier independently records the same quote; only on an exact match is Duo complete. That fixes that you both held the same quote.
ProofReg Duo does not prove you accepted the quote; it proves you both held the same version. That is exactly the point if the price is later disputed.
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.
A registration costs from €1, paid with credits. Verifying a certificate is always free and account-free.
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.
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.
Yes. With Solo you record the received quote alone; no one else is needed. Duo is optional and does require the supplier to register the same quote.
No. ProofReg proves which quote you received and when — not that the offer still legally applied. It is a verifiable reference, not a judgment on validity.
Record a quote · Record an order confirmation · Record an agreement
Updated July 2026