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Prove a document is the original

Every FINIS document carries a cryptographic seal — a fingerprint that changes if a single byte does.

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What it does

The authenticity seal is a cryptographic fingerprint taken when a document enters FINIS. If the document is altered in any way, the fingerprint no longer matches.

Why it exists

Sending a document securely is only half the problem. The other half is proving, later, that the copy in front of you is the one that was sent.

How it works

1. The seal is created on arrival

Automatically, for every document.

2. It travels with the document

Recipients can see the document is sealed.

3. Anyone can check it

The seal can be verified independently.

4. Tampering shows

Any change breaks the match.

When to use it

Signed agreements

Show the executed copy is unchanged.

Evidence

Establish integrity of a document in a dispute.

Financial statements

Confirm the figures circulated are the figures issued.

Certificates and records

Let a third party confirm authenticity themselves.

An example

A supplier disputes the terms of a purchase order. The sealed original verifies in seconds and the argument ends there.

Questions

Do I have to turn it on?

No. Every FINIS document is sealed.

Who can verify a seal?

Anyone holding the document — they do not need a FINIS account.

Does the seal expose the contents?

No. Verification confirms integrity without revealing the document.

Related

Capabilities and guides that work alongside this one.

Verify

Verification confirms a document against its seal — and tells you plainly whether it matches.

Sign

The recipient reads and signs in the same place — and a decline is recorded just as carefully as a signature.

Track

Every open, every recipient, every timestamp — in one history you can show to someone else.

Destroy

Not 'access revoked'. The file is erased, and the destruction is on the record.

Send everything. Fear nothing.

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