content-credentials

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

The open standard for proving any file is real, unaltered and sealed

Invisible, key-verifiable watermarks for AI/LLM-generated text — SynthID-Text-style, in Rust + WebAssembly (Node + browser). Live playground included.

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.

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

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

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.

Lolly generates production-ready assets - QR codes, charts, graphics, PDFs and more - from simple inputs. Constraint-first, template-driven, works offline.

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.

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

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.

数字水印实验室：AI 文本水印检测、C2PA 内容凭证读取、零宽字符隐写、LSB 与频域盲水印，9 个纯前端工具，打开即用不上传文件

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)

PHP library for C2PA Content Credentials: build, sign, read & verify manifests, with machine-readable marking of AI-generated content (EU AI Act, Article 50). Framework-agnostic Core + optional Laravel integration.

Fuck deepfakes. Prove your work. A cryptographic camera app that signs each photo and video as you take it, on the device and offline, so the file carries a record of where it came from that anyone can check.

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

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

Metadata checker & cleaner for AI photos and videos before posting — reads and removes hidden AI markers (C2PA / Content Credentials, EXIF, IPTC, XMP) and applies real camera data. Telegram bot @remorvibot, RU/EN.