Record extra work · from €1
Avoid disputes over extra work.
Record the extra work and its price agreement the moment you agree them — not only on the final invoice.
No surprises on the final bill.
Hashed locally·Not uploaded·Publicly verifiable
Record the extra work and its price agreement the moment you agree them — not only on the final invoice.
No surprises on the final bill.
ProofReg records which extra work and which price agreement existed, with an independent timestamp.
Extra work is the biggest source of trouble: the job is running, something is added, and on the final invoice the client remembers none of it. Record the extra work and the agreed extra price the moment you agree them — then the dispute is settled before it starts.
You put the extra work in a file (an email, a message export or a PDF) and record its fingerprint. Only those 64 characters go to the ledger; the file stays yours.
ProofReg helps at any moment where extra work might later be questioned.
Work is added; record it right away, not only afterwards.
Register the email, so the extra price is fixed later.
With Duo the client independently confirms the same extra work.
The more extra work, the more a verifiable trail matters.
ProofReg records extra work in three steps: put it in a file, record the moment, and verify it later.
An email, message export or PDF with the extra work and price. Your browser calculates the fingerprint locally.
The fingerprint goes onto the public XRP Ledger with a timestamp. With Duo the client independently confirms the same version.
You receive a certificate id and verification link. Anyone can later check that this extra work was agreed then.
ProofReg Duo is strongest for extra work: client and contractor independently confirm the same agreement.
With Solo you record the extra work — enough to show that and when you recorded it. With Duo the client independently records the same file; only on an exact match is Duo complete. That fixes that you both held the same extra-work agreement.
ProofReg Duo does not prove the client was happy with the extra work; it proves you both held the same agreement. That is exactly what the final-invoice dispute is about.
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.
You can record at any moment, but it is strongest at the moment you agree it. Recording later proves the file existed at that later moment — not that the agreement was made earlier.
Not necessarily. With Solo you record the extra work alone. With Duo the client independently confirms the same version; that is stronger in a dispute, but not required.
Record a work agreement · Record a quote · Record an order confirmation
Updated July 2026