JPEG Trust in Valeria

Valeria's Asset Inspector follows the JPEG Trust framework: provide a media asset, extract Trust Indicators from various sources into a Trust Indicator Set, evaluate a Trust Profile, and render a Trust Report.

The framework

The figure above shows the JPEG Trust framework. The table below maps its four stages to the Valeria Asset Inspector.

Stage	In the Valeria Inspector
Media Asset	A media asset can be uploaded or provided via a URL. The image is the input for the Inspector.
Trust Indicators	Trust Indicators can be extracted from various sources, including conventional metadata, provenance information and invisible watermarks.
Trust Indicator Set	Extracted Trust Indicators are serialized in a Trust Indicator Set. The Inspector can render a summary or display the source.
Trust Profile	A Trust Profile can be selected or provided via a URL or file. The Trust Profile defines the formulas whose results will be included in the Trust Report. The Inspector supports rendering and editing of Trust Profiles.
Trust Report	A Trust Report is the result of evaluating a Trust Profile against a Trust Indicator Set. The Trust Report tab can show the rendered report or its downloadable source.

Sources and declarations

Metadata reads supported conventional image metadata. C2PA reads embedded provenance and its validation results. Attribution and rights declarations can be carried by both sources and hence are not a separate extraction tab.

Watermark scanning and content analysis provide optional sources for accounts with the corresponding access. OpenAI verification requires separate authorization and an explicit image upload.

Inspect the implementation

Open a complete example in the Inspector.
Browse the Trust Profiles to read the rules.
Explore the demo gallery to compare complete, missing, inconsistent and altered evidence.
Open the Trust Report Renderer to display an existing report or generate one from an image and profile.

The implementation is based on ISO/IEC 21617-1:2026 — JPEG Trust — Part 1: Core foundation. Check JPEG Trust for more information about the framework and related work.