document records on a public blockchain
Public proof that a document existed — and that it is unchanged
raizelo publishes only the file's code on a public blockchain — a number computed on the issuer's own device. The file and its contents never leave it. Anyone holding the document checks for themselves, whenever they like, directly on the blockchain: no need to ask us for anything, or to trust us.
Test network — Base Sepolia · 84532. The records are real and anyone can check them, but they are not final.
see the contract on-chaincheck a document
Have a document in hand?
Compute the file's code here and open its verification. The file stays on your device.
Computing from the file needs JavaScript, which is turned off in this browser. The field below works without it.
Opening the verification sends only this code to raizelo. The file stays on your device.
Open this document's verificationThe output carries the code followed by the file name — use only the first part, without the 0x prefix.
Talk to raizelo
Use the address you want the reply to reach. The message goes out by e-mail and is not kept in any database of ours.
or write directly to contact@raizelo.com
how it works
- The issuer computes the file's code on their own computer. The file is never sent to raizelo.
- Each code goes into a batch, and the blockchain receives a single code representing the whole batch.
- Anyone holding the file can check, directly on the blockchain, that it existed on that date and is unchanged.