Gankpo – The Universal Electronic Original
Your vault for electronic originals
Gankpo seals your files in a digital vault with modern encryption, digital signature, and certified timestamping.
Cryptographic Sealing
Certified Timestamping
Universal Verification
GKP 2.x Format
The open standard for electronic originals
GKP (Gankpo Package) is an open file format that transforms any digital document into a certified electronic original. Based on modern cryptographic standards, it guarantees the authenticity, integrity, and traceability of your files.
Open Format
Modern Cryptography
Interoperable
The dangers of generative AI
Generative artificial intelligence opens up extraordinary possibilities... but it also makes our digital files more vulnerable than ever. In seconds, it is possible to make fakes that are almost undetectable to the naked eye. Without proof tools, it becomes increasingly difficult to know what to trust.
Visual Deepfakes
Creation of fake photos and videos more real than life, capable of harming a person, an institution, or a company.
Voice Cloning
Imitation of voices to impersonate an identity over the phone, in videoconference, or in audio messages.
Fake Digital Documents
Generation of contracts, certificates, statements, or invoices that are perfectly credible but totally falsified.
Invisible File Modification
Discreet retouching of a PDF, image, video, or audio, without the modification being visible, while maintaining the same "appearance".
Unauthorized Reuse
Texts, photos, reports, presentations, creative content reused, modified, and distributed without credit or respect for intellectual property.
In this context, the question is no longer just "what can AI create?" but
Why choose Gankpo?
A complete solution for digital trust
Proof of Authenticity
The .gkp format guarantees that your document has not been modified since its creation.
Cryptographic Security
Modern algorithms (AES-256, Ed25519, PKI) to seal your files.
Universal Verification
Simple verification with Gankpo Reader on all platforms.
Multi-sector
For all sectors requiring digital trust.
Ready to secure your digital documents?
Test Gankpo today or contact us for a demonstration.
How does Gankpo work?
Gankpo transforms any type of digital file (image, video, audio, office document, PDF, archive, etc.) into a certified electronic original in .gkp format. The goal is simple: to prove that a given file is authentic, at a given date, and that it has not been modified – even without an Internet connection.
1. Select the file
You start by selecting a file on your workstation: contract, judgment, photo, video, report, audio recording, archive, etc. Gankpo accepts virtually all common formats.
2. Create the original (.gkp)
Gankpo calculates the cryptographic fingerprint of the file, seals it in a secure container, adds useful metadata (date, author, context), and generates a .gkp file. This file becomes the reference electronic original.
3. Protect and share
The .gkp file can be stored, archived, or shared with your partners (administrations, clients, courts, banks, etc.). Sealing and timestamping guarantee that any subsequent modification will be immediately detectable during verification.
4. Verify authenticity
The recipient opens the .gkp file with Gankpo Reader, views the original file, and launches the verification. In a few seconds, Gankpo indicates if the file is compliant with the original, if it has been modified, and on what date it was created. This operation can be done offline.