Verifying a file confirms that it has not been changed and matches an existing Authenk certification.
In seconds, Authenk compares the file’s cryptographic fingerprint with the one in the public journal.
Why verify a file?
Verifying a file confirms that it has not changed and matches an existing Authenk certification. This step helps establish that a document, report or digital creation has exactly the same characteristics as when it was originally certified.
The verification process helps you detect whether a file was altered intentionally or accidentally and confirm that it remains authentic.
Verification is particularly useful wherever trust in documents matters: internal audits, contracts, legal work, business archives, sensitive information and collaboration between organizations.
In particular, it helps you:
- detect any change or alteration
- authenticate a file’s origin
- confirm a certificate’s validity
- secure exchanges between parties
- validate a document during an audit
In many professional settings, verifying a file is an essential security step to help prevent mistakes, falsification and future disputes.
How do you verify a file with Authenk?
To verify a file with Authenk, upload the document or its PDF certificate. The system automatically recalculates its cryptographic fingerprint and compares it with the entry in Authenk’s public journal.
In seconds, you get a clear result: valid or invalid file.
Verification steps:
- Upload the file or PDF certificate
- Authenk recalculates the cryptographic fingerprint
- The system compares it with the public journal
- The result appears immediately
- Valid : the file matches the original
- Invalid : the document has been changed
No file is stored during verification. Authenk retains only cryptographic fingerprints, protecting confidentiality.
Verification using the public journal
Authenk’s cryptographic journal records each fingerprint created during certification. This register provides a lasting, tamper-resistant record for checking the validity of documents.
You can consult the public journal at any time to check:
- whether a certificate exists
- the fingerprint linked to a file
- the history of a certified document
- checks already performed
This system offers transparency and reliable proof without exposing the files themselves.
See thecertification historyof Authenk.
When is file verification essential?
Verification plays a key role in several areas:
- validating legal documents
- checking versions in a sensitive project
- verifying contractual attachments
- internal audits or regulatory compliance
- long-term archiving
- secure transfer of files between partners
- protection against impersonation or falsification
For businesses, associations, public bodies and professionals, verifying a file is a simple and highly effective way to protect document integrity.
Verify a file before sharing it
Before sending a file to a client, colleague or public authority, we recommend checking it. This helps confirm that the file:
- matches the original
- has not been changed
- matches its certificate
- may be used as evidence in a dispute
Verifying a file before exchanging it is good practice in any professional process.
Perform your first verification
To start using Authenk verification tools, create an account. Your dashboard also lets you manage certified files, certificates and proofs of integrity.
Create an Authenk account
Explore Authenk pricing
With Authenk, you can verify a file simply, quickly and securely.
Useful resources
“To understand digital fingerprints, you can read the recommendations ofISO.”
