An identifier inside the pixels
A visible watermark adds a logo or text to an image. An invisible watermark encodes a signal within image pixels, with the aim of preserving the viewing experience. In Etchv, the signal represents a 256-bit digest of the reference data supplied with the image.
Embedding is only half the workflow
When you embed, save the returned watermark ID and link it to your own asset or delivery record. The identifier has little practical value if you do not retain the information needed to interpret it later.
Detection attempts to recover that signal
The detection endpoint returns whether a watermark was detected, a confidence value and a watermark ID when available. The confidence is the mean certainty of decoded bits. It is not a calibrated probability of ownership or the likelihood that a named person leaked an image.
Watermarks have limits
Compression, cropping, resizing and other transformations can affect recovery. No detection result should be treated as an unconditional guarantee. Test representative images, include unwatermarked controls and evaluate performance against your own requirements.
What Etchv supports today
Etchv exposes image embedding and detection endpoints. The embed response is a PNG, and uploads are limited to 20 MB and 40 megapixels. The API does not maintain your delivery-to-recipient mapping or scan external websites on your behalf.