Digital timestamping solution

Protect your creations for life for €9.90

Prove you were first. A dated, immutable proof of prior existence for your creations or documents.

Protect your file

Drag your file, receive your certificate. That's it.

File

Payment

Certificate

Drag your file here or click to select

All file types accepted

Important: Final file only

Make sure this is your final version. Once timestamped, this file must never be modified, renamed or converted.

Leave this file unchanged after timestamping
Don't modify it, don't rename it, don't change the extension
Ensure your identity appears in the document
Make copies for your future modifications

How to properly prepare your file before timestamping?

Your email address *

Have an account?

We will send the timestamp certificate to this address.

I accept the Terms of Service*

I understand that the timestamping service is provided immediately after payment. I therefore waive my 14-day right of withdrawal. Why?*

How it works

Advanced technology made simple. Your file never leaves your device.

1. Select your file

Choose your document, image, video or audio. A unique digital fingerprint is generated directly in your browser from its content. Your file remains private.

2. Secure timestamping

The fingerprint is permanently recorded on a secure public ledger. This timestamped proof of existence is tamper-proof and verifiable by anyone.

3. Lifetime certificate*

Instantly receive your PDF certificate. It contains all the necessary proofs and remains valid for life, even if our service no longer exists.

Technical details

Preview of an Instampy digital timestamp certificate document

Verify a file

Verify the integrity and timestamping of a document by comparing its fingerprint.

1. Select the file to verify

Drag your original file

All file types

2. Certificate number (optional)

Enter the first 8 characters of the certificate number

Example: 7ff0bd7f-e177-4d0c-8df5-075bce7ebfc2

You can get the certificate number from:

Your PDF certificate
Confirmation email
Your user account

Do you need to prove your work came first?

Two verification modes according to your needs: simple or for official procedure.

Simple verification

For a quick and autonomous verification of your file integrity.

Use our verification tool

Compare your file with the certificate fingerprint in a few clicks

Instant result

Immediate confirmation that your file has not been modified

Ideal for

Personal verifications, exchanges with clients, informal discussions

Verify now

Official verification

For legal procedures requiring independent expertise.

The certificate contains everything a court-appointed expert needs to verify prior existence.

Complete technical certificate

Contains all necessary cryptographic and technical data

Expert verification

An IT expert can perform the verification independently

Official recognition

The expertise report can be submitted to the judicial authorities

Simple pricing

One price, permanent protection. No subscription.

€9.90

per timestamp • lifetime*

Secure and permanent timestamping
PDF certificate
Independent verification
Technical assistance in case of dispute

Protect my file

Comparison with traditional solutions:

Notarial Deposit

$300

Renewable

Legal timestamp services

$20-100/document

Few years only

Certified mail with proof

$15

Up to 200 sheets via registered mail with return receipt

Instampy

€9.90

No size limit • Lifetime*

* The timestamp has no expiration date, but its verifiability depends on the lifetime of the blockchain registries used to record it.