RICHXPROOF
Documents & digital evidence

Prove a document existed on that date.

Screenshots, invoices, reports, research data, records: fingerprint them the moment they exist and anchor them on RichX Chain. The block time shows the latest moment they could have been created.

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PROOF WATCH · 24/7A watcher on our server reads both RichX chains every minute, around the clock
…public stamps
…last scan
…blocks checked
  • Connecting to the watcher…

Every line comes straight from the chain. Nothing here is typed in by hand. Raw feed

SHA-256 fingerprint —

Stamping writes RXPROOF:v1: + the fingerprint into one transaction from your own wallet to yourself (0 RICHX + a tiny network fee). Need RICHX?

3 · Verify a stamp — paste its transaction hash

Add the original file above first to check that it matches. Works for stamps on RichX Chain and on the RichX Notary Chain.

[ready] RichX Proof engine online — SHA-256 in your browser, live RichX Chain lookups.

…RichX Chain · live block
…Notary chain · live block
SHA-256fingerprint standard
0 uploadsyour file stays with you

What people stamp here

01

Screenshots of a web page or message as it was

02

Invoices, delivery notes and reports when issued

03

Research data and lab notes

04

Photos documenting damage or a condition

How it works

01

Fingerprint

Your browser calculates the SHA-256 fingerprint of the file. The file itself never leaves your device.

02

Stamp

Your own wallet writes the fingerprint into one RichX Chain transaction. The block time becomes the proof.

03

Verify

Anyone with the file and the transaction hash can check it — here, on the explorer, or with their own tools.

What a stamp is — and is not. A RichX Chain timestamp proves that a file with exactly this SHA-256 fingerprint existed no later than the time of the block. It does not prove who created the file, and it is not a notarial certification or legal advice. Whether it is accepted as evidence is decided by the court or authority in each case.

Questions & answers

Does it prove a screenshot is real?

It proves the screenshot existed unchanged from the moment it was stamped. It cannot prove what was on the screen before that — so stamp it as early as possible.

What exactly does a stamp prove?

That a file with exactly this SHA-256 fingerprint existed no later than the time of the block it was written into. Change a single byte of the file and the fingerprint no longer matches.

Do you see or store my file?

No. The fingerprint is calculated inside your own browser. Your file never leaves your device — only the 64-character fingerprint is written to the chain, and nobody can turn it back into your file.

Is this a notarial deed?

No. It is a cryptographic proof of existence, not a notarial certification and not legal advice. It does not prove who created a file. Whether a court or authority accepts it as evidence is decided case by case.

What does it cost?

RichX Proof charges nothing. You only pay the RichX Chain network fee — a tiny amount of RICHX — from your own wallet. You can get RICHX on RichXchange.

What if richx.pro disappears one day?

Your stamp stays on RichX Chain. The fingerprint is standard SHA-256, so anyone can recalculate it with ordinary tools and compare it with the transaction on any RichX Chain node or explorer.

What do I need to keep?

The original file, unchanged, and the transaction hash of your stamp. With those two, anyone can check the proof at any time.