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

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)

C2PA examined from the standpoint of artistic authorship

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.

Streamlit application for summarizing Content Credentials.

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.

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.

MCP server that verifies C2PA Content Credentials and returns LLM-ready provenance verdicts. npx, zero install.

Human Provenance in Film (HPF) AI Disclosure Taxonomy. A free, open three-category standard for disclosing AI use in film and television, designed to travel through existing chain of title documentation. An initiative of The Mise En Scène Company.

A Gutenberg block and inline format for marking the AI provenance of published content — the WordPress reference implementation of the AI Evidence Format (Kinetic Gain Protocol Suite).

Automated tester and crowd-maintained matrix for whether platforms strip C2PA Content Credentials on upload.

Desktop app to inspect C2PA / Content Credentials (CAI) in images and videos. A macOS-style UI for Windows, built on c2patool.