Simple CLI to stamp and verify PDFs with sidecars (execution-only).
Project description
InkDNA Fingerprint (Simple CLI — PDF only)
A lean, Windows-friendly CLI to stamp and verify PDFs.
What it does
- stamp: embeds a compact InkDNA payload inside the PDF and writes a sidecar JSON next to the output (
*_inkdna_signature.json). - verify: reads the embedded payload and recomputes a canonical hash of the page content streams (ignoring our own payload).
Optionally, pass a sidecar to cross-check. Prints full forensic details every time.
No activation, no licensing, no remote calls. Execution-only.
Install (Windows)
py -m pip install --upgrade pip
py -m pip install .
This installs the inkdna command.
Usage
Stamp
inkdna stamp input.pdf -o output.pdf --code "ORDER-123"
- Always writes a sidecar:
output_inkdna_signature.json
Verify (sidecar optional)
inkdna verify output.pdf
inkdna verify output.pdf --sidecar output_inkdna_signature.json
Verification prints:
- OK/FAIL for canonical hash match
- Embedded payload (issuer, version, timestamp, code, file type)
- Canonical SHA256 stored vs recomputed
- Per-page stream counts and sizes
- Sidecar cross-check details (if provided)
Version
0.1.2
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