The file changes.
The watermark stays.
A watermarked PDF page is saved as a PNG image. Watch the watermark lead back to the copy it came from.
A document worth tracingOne page. One recipient. One invisible watermark.
ORIGINAL FORMAT PDFAwaiting watermark
One page. One copy. One verifiable trail.
Live mode runs the Etchv API. Replay follows a verified run with edited timing. The PNG is a full-page capture of the delivered PDF.Public source. Fictional recipient. No affiliation with SpaceX. A match identifies a copy, not who shared it.Follow the evidence
Original page PDF Verified run · watermarked copyPDF Verified run · page capturePNG
Inspect the verified API receipt
{
"status": "succeeded",
"stage": "detect",
"matched": true,
"reference": "Investor 042",
"watermark_id": "fb25a14ecfd8d3977eca5a9588d550cffd12007ab0f0724fa43e691e5d900912",
"expected_watermark_id": "fb25a14ecfd8d3977eca5a9588d550cffd12007ab0f0724fa43e691e5d900912",
"input_format": "PNG",
"source_page": 42,
"confidence": 0.9995787739753724,
"capture_sha256": "16cd003b0e707b1b1043af04520cdfe137c5be6ed3b07fcbb5dfae8afe9430ee",
"source_sha256": "7a5cc5876da657566e1ba8eb36974c523b5bdabc13110503fe39dfffa0227df0",
"verified_at": "2026-10-03T16:48:10.230887+00:00",
"embed_seconds": 8.94,
"detect_seconds": 2.08,
"capture_width": 1440,
"capture_height": 810
}