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.

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

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.

🌍 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)

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

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

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.

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).

Hardware-bound operation evidence system for digital creation processes. This repository publishes architectural concepts as prior art.

Pure-Go (no cgo) C2PA / Content Credentials library for JPEG & PNG: a fast unverified reader plus full cryptographic validation (signature, cert chain, hash bindings, RFC 3161 timestamp).

C2PA 2.2 Durable Content Credentials MCP - soft + hard binding (Digimarc-compatible). MIT. By MEOK AI Labs.

Drop-in client-side renderer for per-claim AI provenance on Webflow — the Webflow reference implementation of the AI Evidence Format (evidence card + schema.org JSON-LD + verifiable evidence object, bindable to CMS fields).

Jura Trace — official installer downloads. Desktop application for forensic media verification.