The signature proves who signed.
Giblet helps prove exactly what was signed.
When an important agreement is challenged months or years later, proving exactly what was signed can matter. Giblet creates an independent, tamper-evident proof record of the final signed document — so its integrity can be verified when you need it most.
Contract Integrity Assurance for documents that matter.
Create the evidence before you need the evidence.
The dispute rarely starts on signing day.
Documents get downloaded, renamed, emailed, stored and passed between people long after signing. When a question finally arises, teams are left searching through inboxes, folders and competing versions to work out what actually happened.
Is this the final signed version?
Has the file changed?
Can we independently verify it?
A durable proof record for documents that matter.
Giblet creates an independently verifiable proof record tied to the exact completed document — separate from the original email chain, employee account or internal folder structure. It stays useful long after the platform it was signed on is forgotten.
How it works
Upload and prepare
Upload a PDF and place fields for name, signature and date.
Send for signing
Recipients get a secure email link — no account required.
Complete the agreement
Each signer reviews and signs; the document is finalised.
Receive permanent proof
Giblet creates a tamper-evident proof record of the final file.
See the real product
From upload to proof, every screen below is Giblet as it actually works today.
1. Upload your PDF
2. Place signing fields
3. Recipient signs
4. Document is completed
5. Proof record created
6. Anyone can verify it
Giblet, alongside your e-signing tool
Ordinary e-signing helps you complete an agreement. Giblet adds a durable verification layer for agreements that may need to be trusted later.
Who it's for
Legal and conveyancing
Durable proof for contracts and settlements that may be examined long after signing.
Property and construction
Verify the final version of leases, variations and approvals across long projects.
Procurement and supplier agreements
Confirm exactly what terms suppliers agreed to, months into a contract.
Business-critical contracts
Protect agreements where the cost of a dispute is high.
Governance and approvals
Create a lasting record of board and committee sign-off.
Important personal agreements
Give personal contracts the same level of durable proof as a business would.
Security and privacy
Documents are protected throughout the signing process with encrypted storage and secure links.
The document itself is never published on the blockchain — only a cryptographic fingerprint is recorded.
That fingerprint is used to verify whether a document matches the originally completed file — not to expose its contents.
Changing even a small part of a document produces a different fingerprint, making alterations detectable.
Proof of this kind provides strong, independently verifiable evidence — it is one part of establishing what was agreed, alongside your own records and legal advice.
See Giblet complete an agreement and create its proof record.
Some documents are too important to leave to an email chain.
Create an independent proof record for your next important agreement.
Create Your First Proof Free