Certifying a file, listing or media item helps prove its authenticity and lets anyone who sees your content verify it reliably.
With Authenk, you can certify any type of content in seconds: a document, image, video or listing. Each certification creates a unique ID and a publicly accessible verification link.
Why certify content?
Certifying content helps prevent fraud, unauthorized changes and doubts about authenticity. Whether you are a professional or an individual, certification provides clear, verifiable proof.
How to certify with Authenk
The process of certification is simple:
- Upload your file or enter your content
- Start certification
- Get an ID and verification link
In seconds, your content is certified and ready to share with reliable proof of authenticity.
What content can you certify?
With Authenk, you can certify different kinds of content to suit your needs: files, listings and media. This helps establish the authenticity of a document, post or visual content and gives customers, partners and visitors an easy way to verify the information. Certifying content builds trust, improves transparency and makes public verification easier when doubts arise.
Adding proof to a file helps establish its existence, integrity and date at a given moment.
With Authenk, you can do this in seconds, without technical knowledge, directly in your browser.
The platform automatically generates a cryptographic fingerprint, a PDF certificate and a publicly verifiable timestamp.
Why add proof to a file?
Why add proof to a file?
Adding proof provides important assurances:
- proof of prior existence
- proof of file integrity
- protection against falsification
- public verification at any time
- documented compliance for audits and checks
Authenk is designed for businesses, creators and professionals who want to protect sensitive documents.
Why is it important?
Adding proof helps establish a file’s authenticity and integrity over time.
Using a unique cryptographic fingerprint, Authenk helps demonstrate that the file has not changed.
This proof may be used in professional, legal or administrative contexts, or to protect an original creation.
It is also a simple way to counter falsification, whatever the document type.
How does Authenk work?
The process is simple and automated:
- Authenk calculates the file’s digital fingerprint
- The fingerprint is timestamped
- It is recorded in a public journal
- A PDF certificate is generated
No file is stored.
Only the cryptographic fingerprint is retained, protecting confidentiality.
How do I add proof to a file?
The process is quick:
- Upload your file (PDF, image, video, etc.)
- Authenk calculates its fingerprint
- The proof is timestamped and recorded
- You receive a certificate immediately
- The file can be verified at any time
When should you use file proof?
In many situations:
- protecting a creation
- establishing prior existence
- securing a document before sending it
- establishing the integrity of a contract or report
- archiving an important document
- meeting audit or compliance requirements
Supported file types
Authenk accepts:
- PDF documents
- images
- videos
- audio files
- ZIP archives
Each file is processed locally before proof is generated.
Verify proof
A file can be verified at any time.
The platform recalculates its fingerprint and compares it with the recorded value.
This confirms whether the document has changed.
Visit the Verify a filepage.
Get started with Authenk
Simply create an account to add your first proof.
You will have a complete space to manage:
- your proofs
- your PDF certificates
- your history
- your verifications
Create an Authenk account
See Authenk pricing
A solution designed for professionals
Authenk was designed for professionals who work with sensitive documents.
Each proof provides:
- traceability
- integrity
- independent verification
