File associated with the proof
contrat-final.pdf
7a31…c824
Documents and images
Is a version of your document or image disputed? Create a technical proof for the file concerned without publishing it.
Distinguish between versions, document a disputed image or keep a precise technical reference: Kicklinks associates a SHA-256 fingerprint with the exact file processed.
The standard workflow is private. The original is used during processing, then deleted when processing finishes successfully.
Download the certified copy during its seven-day availability window. The fingerprint and proof information remain retained separately; the standard proof PDF is not published.
Real-world situations
An invoice, contract, image or screenshot can be altered and then presented as the original.
What can happen
- An altered amount, bank details, date or clause.
- Two parties claiming they received different versions.
- A screenshot cropped or taken out of context.
- A photograph retouched or changed using AI.
- A file replaced after a dispute begins.
How Kicklinks helps you
Record the elements that identify a specific file version and distinguish it from an altered version.
Compare the exact file
The name may be identical. The fingerprint may be different.
Demonstration — fictitious data
Another version of the file
contrat-final.pdf
7a31…9f02
The finding: the names are identical, but the fingerprints are different.
These two files do not contain exactly the same bytes. This is a technical file difference, not a conclusion about authorship, the truth of the content or fraud.
Illustrative comparison, not a public service result.
The fingerprints are fictitious and abbreviated for the demonstration. No file is sent and no processing engine is called.
Two distinct stages
From the submitted file to the private proof.
Creating a proof
- 1The PDF or image is sent to Kicklinks.
- 2The SHA-256 fingerprint is calculated from the file received.
- 3OpenTimestamps timestamping is included for eligible certifications, without promising automatic initiation or immediate confirmation.
- 4When processing finishes successfully, the original is deleted and proof information is retained separately.
Access in your account
- 1The standard proof remains in a private, authenticated workflow.
- 2The certified copy can be downloaded for seven days: download it from your account during that window.
- 3After those seven days, Kicklinks does not promise to return either the certified copy or the original.
- 4The fingerprint and proof information remain retained separately from the files.
- 5The standard proof PDF remains private.
- 6No public page, public badge or public fingerprint search is offered at launch.
Supported formats
PDFs and images, within the existing workflow’s scope.
The applicable maximum size is shown when you upload.
Document
Images
- PNG
- JPEG
- GIF
- WebP
Generic office documents, archives, executables and other unsupported formats must not be presented as accepted.
The fingerprint’s scope
An exact match for a specific file.
The exact file
An identical SHA-256 fingerprint establishes an exact match at the level of the file’s bytes.
Proof information
The fingerprint, date, status and timestamping information actually available remain retained separately from the files.
Private access to your files and proof
The certified copy can be downloaded for seven days and the standard proof PDF remains private. Neither is published on a public page or badge.
Limits stated clearly
File integrity does not answer every question.
The integrity and match of the exact file are established. The fingerprint alone does not establish the truth of the facts represented, authorship, signing, sending, acceptance or legal classification.
- The fingerprint does not automatically identify the author.
- It does not identify a signatory.
- It does not establish that the content is true.
- It does not establish that the document was signed, sent or accepted.
- It does not prove acceptance by another party.
- It does not establish the document’s legal classification.
- It does not automatically constitute an electronic signature.
- It does not guarantee a qualified timestamp.
- It does not establish that no changes were made before the proof was created.
Files and proof information
Original, certified copy and proof follow three different processes.
- Original
- It is used during processing, then deleted when processing finishes successfully.
- Certified copy
- It can be downloaded for seven days. Download it during that window: no later return of the copy or original is promised.
- Proof information
- The fingerprint and proof information remain retained separately from the files. The standard proof PDF remains private.
OpenTimestamps is included for eligible certifications. Inclusion does not promise automatic initiation or immediate confirmation.
Useful questions
What the private workflow retains — and what it does not.
Is my document or image published?
No. The marketing page is public, but the standard workflow, file, certified copy and proof PDF remain private.
What happens to the original file?
The original is used during processing. When processing finishes successfully, the original is deleted.
What should I download, and how long do I have?
Download the certified copy from your account during its seven-day availability window.
What remains after the seven days?
The fingerprint and proof information remain retained separately from the files. Kicklinks does not promise to return the certified copy or original after this window.
What does this proof establish?
It associates a fingerprint with the exact file processed. On its own, it does not establish the truth of the content, authorship, signing, sending or acceptance. OpenTimestamps is included for eligible certifications, without promising automatic initiation or immediate confirmation.
Prepare the exact file you want to document.
Read how the private workflow works, then download the certified copy from your account during its seven-day window.
