Provcheck v1.4.0 ships a ComfyUI node for in-graph watermarking and C2PA signing
ckn · reddit · 2026-09-02
Provcheck.ai, an offline Rust-based content provenance kit, released v1.4.0 with a ComfyUI node that watermarks and C2PA-signs outputs directly in the graph—no CLI needed.
Highlights:
- Watermarks: open neural watermarks embedded locally (TrustMark for images, SilentCipher for audio), placed after any image/audio/video generator node.
- C2PA Content Credentials: optionally binds a signature to your public Bluesky/AT Protocol handle so third parties can verify authorship.
- Read mode: decodes existing marks from any file and checks whether a watermark survived export, compression or third-party edits.
- Privacy: 100% offline, no accounts; detector weights download once on explicit install, no background updates.
Caveats: only open detector families ship with the node (the keyed Backfire mark is a separate opt-in), and it is not a deepfake detector—it cannot flag unmarked files as AI-generated. Source at github.com/CreativeMayhemLtd/provcheck under Apps/comfyui-node.
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