ProofReg grew out of a simple question: why is showing that something existed so cumbersome, and so expensive?
ProofReg exists because recording a fingerprint on the XRP Ledger should not be an expensive undertaking.
My brother-in-law wanted to record four sheets of paper with shoe designs. He went to a notary, because he did not know there was another way. It cost him several hundred euros — for four sheets of paper.
What he needed was smaller than what he bought: to be able to show that those designs existed, in exactly that form, at that moment. Nothing more.
That is precisely what ProofReg does. You calculate the SHA-256 fingerprint on your own computer; only those 64 characters go to the XRP Ledger. From €1. And you do not have to take our word for it — anyone can check it.
ProofReg is a registered trade name of Emil Hüsstege Webdesign B.V., listed with the Dutch Chamber of Commerce under number 17112752.
Emil Hüsstege is founder and director. He began designing websites in 1995, in the pioneering years just after De Digitale Stad (The Digital City) opened its virtual gates — connecting through a 14.4k modem. He has run his own company without interruption since 1999, first in graphic design and web design, later in software and online services.
In recent years he has worked with AI daily. Not out of duty, but out of curiosity: the world is shifting, and whoever watches where the hinges are tends to see sooner what becomes possible.
The Dutch trade register describes the company's activities as including "digital proof registration, hash registration, timestamping, issuing digital registration records and verification of digital files". ProofReg is not a side project — it is what the company is registered to do.
ProofReg is a proof-of-existence registry on the XRP Ledger that proves a file's fingerprint existed at a ledger timestamp — including mutual registration for two parties and self-anchored certificates.
At ProofReg the certificate is not a printout of the proof — it is proof. The server builds the certificate byte-for-byte identically, calculates its SHA-256, and records that fingerprint on the ledger in a second transaction. Change one byte and the match breaks. Not even we can do that unnoticed.
The certificate is always emailed. As a result no certificate exists without its anchor, and a copy sits beyond our reach.
ProofReg does not establish identity and does not assess the content of your file.
The registrant name is entered by the applicant and is not checked. A registration therefore says nothing about who someone is, who made something, or to whom it belongs.
What it does say is narrow and hard: the fingerprint of this file existed before this ledger timestamp. You can build on a sentence like that, precisely because nothing has been invented around it.
ProofReg claims little on purpose, because proof that promises too much stops being proof.
Every sentence on this site passes an automated check that blocks words promising more than ProofReg can deliver. If that check fails, the site is not built.
It is inconvenient while writing, and that is exactly the point. A registry that presents itself as more than it is undermines the very thing it exists for.
ProofReg can be reached at info@proofreg.com.
Emil Hüsstege Webdesign B.V. · Berkel-Enschot, the Netherlands
Dutch CoC 17112752 · VAT NL809694244B01
ProofReg is a registered trade name of Emil Hüsstege Webdesign B.V.
No. ProofReg is not a notarial service and does not establish copyright or a patent. ProofReg dates the existence of a fingerprint on the public ledger. It provides proof of existence-on-a-date — often exactly what you need before you share, submit or publish something.
What you register and what you claim about it is your responsibility. ProofReg does not see your file's content and does not check whether an entered name is correct or whether you are the creator or rightsholder. A registration proves your version existed at a certain moment — not that no one recorded something earlier.
A registration costs from €1, paid with credits. Verifying a certificate is always free and account-free.
No, and that is a common assumption. If someone deposits a document with a notary and states that he is the designer, the notary records that statement — he does not test it. What the notary does establish is who appeared before him, and on what date. ProofReg does not do the latter: the registrant name is entered by the applicant and is not verified. ProofReg records that a file's fingerprint existed at a ledger timestamp, checkable by anyone.
What ProofReg proves · Verification specification · ProofReg Duo
Updated July 2026