Content Authenticity Python Packages

trustmark

TrustMark - Universal Watermarking for Arbitrary Resolution Images

c2pie

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

c2pa

Python implementation of C2PA: Coalition for Content Provenance and Authenticity.

crovia-seal

Crovia Seal — tamper-evident, offline-verifiable receipts for AI outputs (crovia.seal.v1). IETF Internet-Draft draft-crovia-seal. Reference implementation, conformance vectors, in-browser verifier, signing service. Wraps every TACET proof.

sum-engine

Cross-runtime trust surface for LLM-rendered text: Python, Node, and browser runtimes produce byte-identical Ed25519 signatures over JCS-canonical bytes.

oprindo

Oprindo Python SDK — C2PA Content Credentials signing for generative-AI providers. Content-local by default.

is-it-ai-mcp

MCP server that reads C2PA Content Credentials: what an image declares about its own origin, and whether that declaration still verifies

trustmark-hailo

TrustMark - Universal Watermarking for Arbitrary Resolution Images

orphograph-mcp

Empirical notary: hash locally, OpenTimestamps, Bitcoin-anchored receipts. MCP server + CLI + GitHub Action.

langchain-chronoverify

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.

ai-provenance-tracker

Open-source multimodal AI provenance detection platform with explainable evidence cards, provider consensus, and benchmark-driven quality gates.

image-provenance-inspector

Inspect image metadata, C2PA Content Credentials, and editing provenance to explain camera-captured, AI-edited, and AI-generated images.

rooted-sbr

Open-source, vendor-neutral C2PA Soft Binding Resolution server on Backblaze B2. Recovers stripped provenance for AI image, audio, and video, with a WORM transparency log and an MCP surface.