content-credentials

Remove visible and invisible AI watermarks from images and video, and AI provenance metadata from images, video, and audio. Python library, CLI, and agent skill for SynthID, C2PA, EXIF, IPTC, XMP, and common generative-AI marks.

Strip EXIF, GPS, C2PA / Content Credentials, AI watermarks, and Stable Diffusion / ComfyUI / Midjourney / ChatGPT prompt blocks from any image. Three modes: safe (pixel-identical), paranoid (re-encode), nuclear (disrupt SynthID/Digimarc). CLI + macOS desktop app. 100% offline.

ComfyUI custom nodes for detecting provenance marks, removing visible and invisible AI watermarks, stripping metadata, and erasing selected regions.

Test what AI watermark and provenance evidence exists, whether it verifies, and what survives publishing.

The world's first c2pa standard implementation that supports PDF-files signing.

Trace file provenance, metadata, telemetry, investigative pivots and relationships across files, browser history, OS traces and archives. Local, read-only, no network requests.

Research-only AI watermark & provenance robustness toolkit: local reverse proxy (OpenAI/Anthropic/Gemini) + CLI stripping C2PA/EXIF/XMP, zero-width & homoglyph Unicode, KGW text watermarks, DWT/Tree-Ring image stego, AudioSeal, PDF/DOCX/PPTX/XLSX metadata, and Trojan Source (CVE-2021-42574) code scanning.

Embed, extract and verify C2PA Content Credentials in plain Unicode text.

Free open-source AI watermark, metadata and provenance cleaner. Inspect → Clean → Verify.

Tiny, dependency-free CLI to detect and inspect C2PA Content Credentials (provenance) in media files — with optional cryptographic validation.

Erase AI provenance & watermarks from your own text, images and documents.

Cryptographic provenance for AI-generated images. A ComfyUI custom node and Python library that binds every Stable Diffusion / SDXL render to the licensed assets it actually loaded, and refuses to render when a licence does not permit it. C2PA, RFC 3161 trusted timestamping, offline verification. Apache-2.0.

Image provenance for AI agents: LlamaIndex tool for ChronoVerify. Verify when a photo was taken and its provenance (C2PA Content Credentials, EXIF, pixel forensics). Not a deepfake detector.

🧼 For photographers: strip C2PA/IPTC/XMP/EXIF provenance tags that wrongly label your own AI-retouched photos as 'Made with AI'. Local, lossless, private.

Image provenance for AI agents: drop-in recipes to give any agent capture-time and provenance verification with ChronoVerify. MCP one-click install, OpenAI/Claude tool defs, LangChain/LlamaIndex/CrewAI/n8n, and REST.

Kennzeichnet KI-generierte Bilder und Videos nach EU AI Act Art. 50: sichtbares Label im Werk, C2PA Content Credentials, Nachweisdokument. Pflicht ab 02.08.2026.

Free Windows app to remove EXIF, GPS location and AI (C2PA) metadata from photos — offline, lossless, verified. | Remova metadados, localização (GPS) e marcas de IA das suas fotos.

Hands-on reference: sign C2PA assets with c2patool while keeping both the Root CA and leaf signing keys inside AWS KMS.

Open conformance test suite for the CAWG identity, metadata and training-and-data-mining assertions (C2PA Content Credentials)

C2PA Soft Binding Resolution API for ISCC (io.iscc.v0) on the ISCC Discovery Protocol