AI watermark remover. CLI and Python library to strip visible and invisible AI watermarks (Gemini / Nano Banana sparkle, SynthID) and provenance metadata (C2PA, EXIF, IPTC) from images.

Cryptographic proof of photo authenticity for any Android device. ECDSA P-256 signed. SHA-256 hashed. 14-sensor fingerprinted.

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.

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

🌍 Awesome C2PA: Multi-language specifications, tools, and resources for content authenticity

ChronoVerify MCP server: verify a photo's capture time and provenance (C2PA validation, EXIF/XMP, pixel forensics). Tools: verify_image (typed verdict) and get_signed_report. Local via npx, or hosted at chronoverify.com/mcp/http.

Combat fake news with cryptographic image verification. Origin Lens analyzes C2PA Content Credentials and EXIF metadata to detect AI-generated content, verify digital signatures, and reveal complete edit history. Privacy-first open source iOS app with on-device verification. (arXiv:2602.03423)

Local-first C2PA Content Credentials verifier + creator toolkit. Neural-watermark cross-check (silentcipher, AudioSeal, WavMark) and atproto-bound identity. CLI + GUI for Windows/Linux/macOS. Apache-2.0.

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

C2PA examined from the standpoint of artistic authorship

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

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

C2PA signing pipeline (JPG/DNG/MP4/PDF) built during SSL.com conformance review. Includes fixes for real-world conformance failures.

Interactive teaching lab on why AI content watermarks are fragile — and the case for cryptographic content provenance (C2PA). Educational simulation; does not process real SynthID.

TypeScript tooling to support EU AI Act Article 50 and California SB 942 compliance: log & fingerprint AI text output, sign AI images with C2PA Content Credentials, keep an append-only audit evidence log, and show AI disclosure labels. Not legal advice.

Streamlit application for summarizing Content Credentials.

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

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

End-to-end reference: AWS-serverless C2PA signing & verification (API Gateway + Lambda + S3 + DynamoDB + KMS + CloudFront), IP-allowlisted via WAF v2.