Public registry for declarations and evidence

Record a file. Add publication evidence. Verify a record.

Electronic Registry creates a public record for the exact SHA-256 hash of a file and can later attach a public reference to that same file as publication evidence. It does not prove ownership, authorship, truth, legality, or official approval.

Record a file
Already have the file or hash? Use Quick verify on the right.
Quick verify
Verify a record

Paste the SHA-256 hash or choose the file to check whether the exact same file has a registry record.

Choose or drag the file
The file is hashed locally in your browser.
This local helper accepts any file type and hashes it locally.
How the service works

A clear procedure, not a set of disconnected tools

Start with the exact file. Add publication evidence only when you want to attach a public reference. Later, verify the same file or its SHA-256 hash to confirm whether a record exists.

Step 01

Record a file

Create the first public record for the exact SHA-256 hash of the file.

Step 02

Add publication evidence

Attach a public reference to a file that is already recorded when you need that extra evidence.

Step 03

Verify a record

Later, verify the same file or its SHA-256 hash to confirm whether a record exists.

Trust boundary

What the registry proves — and what it does not prove

Electronic Registry records technical facts about declared records and their timing. It does not act as a judge, publisher, or legal authority.

What this proves

A declaration was written for the exact SHA-256 hash of a file.

What this does not prove

Ownership, authorship, originality, truth, legality, or official approval.

What this proves

When the record was written to the registry.

What this does not prove

That a public reference is the original or only source.

What this proves

Whether the same file matches when the original file or exact hash is available.

What this does not prove

The file itself without the original file or exact hash.