Flutter & C2PA Explained in Comics: A Practical How-To for Developers

Ever tried reading C2PA metadata in Flutter, only to get hasAiGeneratedContent: false on a clearly AI-generated image? I ran into exactly that problem — and the debugging trail was more interesting than I expected.

I documented the whole journey as a comic. Six panels, two bugs, one fix.

The short version

Two bugs stacked:

1. Active-manifest-only inspection — OpenAI images have c2pa.opened as the active manifest; the AI evidence (c2pa.created + trainedAlgorithmicMedia) lives in another manifest.
2. Field name mismatch — c2pa_flutter 0.1.0 reads source_type, but c2pa-rs 0.75.x emits digitalSourceType.

The fix: read raw JSON from the Rust reader, walk all manifests, and accept both field names.

Want the full code walkthrough? I wrote a detailed companion post here: → Reading the “AI evidence” embedded in ChatGPT and Canva images with Flutter

Live demo: https://blurbrah.github.io/c2pa_ai_gallery_probe/

Source: https://github.com/BlurBrah/c2pa_ai_gallery_probe