# Encypher - Content Provenance Infrastructure
# https://encypher.com
# Last Updated: March 2026

## About Encypher

Encypher authored Section A.7 of the C2PA 2.3 specification (text provenance) and co-chairs the C2PA Text Provenance Task Force. We provide content provenance infrastructure for publishers, AI companies, and enterprises, covering 44 signable media types across text, images, audio, video, documents, and fonts (20 formally passed the C2PA conformance program).

### What We Do
- Authors of C2PA Section A.7 (text provenance), published January 8, 2026
- Co-Chair of C2PA Text Provenance Task Force alongside Google, BBC, OpenAI, Adobe, Microsoft
- Content provenance infrastructure covering 44 signable media types across 6 media categories (20 formally passed the C2PA conformance program)
- Cryptographic watermarking for text with sentence-level granularity (patent-pending, ENC0100)
- C2PA manifest signing for images, audio, video, documents, fonts, and live video streams
- Free verification across all media types (no authentication required)
- Willful infringement enablement through formal notice and cryptographic proof

### Who We Serve

**Publishers**: Embed cryptographic proof of origin into text at sentence-level granularity. Watermarking survives copy-paste, B2B distribution, and scraping. Serve formal notice to AI companies. Transform innocent infringement into willful infringement. Sign your entire content portfolio (text, images, audio, video) under one provenance infrastructure. Verification is free.

**AI Companies**: Compatible infrastructure for marked content entering training pipelines. Quote integrity verification (prove whether "According to AP..." is accurate or hallucinated). Performance intelligence from sentence-level attribution. We build provenance standards WITH AI companies through C2PA, not against them. OpenAI is a C2PA member.

**Enterprises**: EU AI Act compliance infrastructure (enforcement deadline August 2, 2026). Sentence-level audit trails. AI governance with cryptographic proof. Sign all content types under one platform.

### Key Differentiators
- Authored Section A.7 of C2PA 2.3, co-chair the Text Provenance Task Force
- 44 signable media types across 6 media categories (text, images, audio, video, documents, fonts); 20 formally conformance-passed
- Sentence-level granularity for text (patent-pending Merkle tree authentication)
- Cryptographic proof (deterministic, not statistical inference)
- Free verification across all media types
- Willful infringement enablement (formal notice + cryptographic proof)
- Quote integrity verification

### Standards and Affiliations
- C2PA (Coalition for Content Provenance and Authenticity) - Text Provenance Task Force Co-Chairs, authored Section A.7 of C2PA 2.3
- CAI (Content Authenticity Initiative) - Members
- Active collaboration with Adobe, Microsoft, Google, OpenAI, BBC

## Products and Pricing

### For Publishers
- **Free**: Unlimited C2PA text signing, 2 API keys, coalition licensing (60/40 split)
- **Professional ($99/mo)**: Sentence-level tracking, 10 API keys, self-service licensing (80/20 split)
- **Business ($499/mo)**: Team collaboration, advanced analytics, priority support
- **Enterprise (Custom)**: Multi-media signing (images, audio, video, live streams), fingerprinting, custom SLAs

### For AI Companies
- Quote integrity verification API
- Performance intelligence from attribution data
- Compatible infrastructure for provenance-marked content
- Pricing determined by coalition agreements

### For Enterprises
- EU AI Act compliance infrastructure
- Multi-media C2PA signing across full content portfolio
- Sentence-level audit trails and governance
- On-premises deployment and BYOK available

## Technical Overview

### C2PA Implementation
Encypher is the reference implementation of C2PA Section A.7 for text provenance. Key capabilities:
- Text: Variation selector encoding (invisible), Ed25519 signatures, sentence-level Merkle trees, tamper-evident chain
- Images: JUMBF manifest embedding for 13 formats (JPEG, PNG, WebP, TIFF, AVIF, HEIC, HEIF, SVG, DNG, GIF, JXL)
- Audio: Container-specific embedding (RIFF/ID3/BMFF) for WAV, MP3, M4A, AAC, FLAC, MPA
- Video: ISO BMFF/RIFF embedding for MP4, MOV, M4V, AVI
- Documents: Custom JUMBF/COSE for PDF, EPUB, DOCX, ODT, OXPS
- Fonts: Custom JUMBF/COSE for OTF, TTF, SFNT
- Live Streams: Per-segment C2PA manifests with backwards-linked provenance chain

### API v2.0.0
- `POST /api/v1/sign` - Sign text with C2PA provenance (Free tier and above)
- `POST /api/v1/sign/media` - Unified media signing for images, audio, video, documents (Enterprise tier)
- `POST /api/v1/verify` - Verify text provenance (free, no auth)
- `POST /api/v1/verify/image` - Verify image C2PA manifests (free, no auth)
- `POST /api/v1/verify/audio` - Verify audio C2PA manifests (free, no auth)
- `POST /api/v1/verify/video` - Verify video C2PA manifests (free, no auth)
- Live stream signing: start/segment/finalize endpoints for real-time provenance

### SDKs
- Python SDK (PyPI: encypherai)
- TypeScript SDK (npm: @encypherai/sdk)
- WordPress Plugin (wordpress.org)
- Chrome Extension (Chrome Web Store)

## Content Provenance Resources

### Pillar Pages
- /content-provenance - What Is Content Provenance? The Definitive Guide
- /c2pa-standard - The C2PA Standard: How Content Provenance Works
- /cryptographic-watermarking - Cryptographic Watermarking: Proof Embedded in Content

### Comparisons
- /compare/encypher-vs-synthid - Cryptographic vs. statistical watermarking
- /compare/encypher-vs-wordproof - Embedded provenance vs. blockchain timestamping
- /compare/encypher-vs-detection-tools - Proof of origin vs. AI detection
- /compare/encypher-vs-tollbit - Embedded provenance vs. access gates
- /compare/content-provenance-vs-content-detection - Category-level distinction

### Glossary
- /glossary - Content provenance terminology (40+ definitions)

## Contact

- Website: https://encypher.com
- API Documentation: https://api.encypher.com/docs
- GitHub: https://github.com/encypherai
- Email: contact@encypher.com
- Sales: sales@encypher.com
- LinkedIn: https://linkedin.com/company/encypherai

## Frequently Asked Questions

Q: What is Encypher?
A: Encypher provides content provenance infrastructure. We authored Section A.7 of the C2PA 2.3 specification (text provenance) and co-chair the Text Provenance Task Force. Our platform signs content across 44 media types with C2PA manifests (20 formally passed the C2PA conformance program) and provides free verification for anyone.

Q: What is content provenance?
A: Content provenance is cryptographic proof of origin embedded directly into digital content. Unlike detection tools that guess after the fact, provenance is established at creation and travels with the content wherever it goes. C2PA is the open standard that defines how provenance manifests are embedded.

Q: What is the C2PA standard?
A: C2PA (Coalition for Content Provenance and Authenticity) is an open standard for content provenance backed by 200+ member organizations including Adobe, Microsoft, Google, BBC, and OpenAI. Encypher authored Section A.7 (text provenance), published January 8, 2026.

Q: How is Encypher different from AI detection tools?
A: AI detection tools provide statistical guessing with variable accuracy and false positives. Encypher provides cryptographic proof with deterministic accuracy. Detection guesses after content exists. Provenance is embedded at creation and verified with mathematical certainty.

Q: What media types does Encypher support?
A: 44 signable media types across 6 categories (20 of them formally passed the C2PA conformance program). Documented formats include: text (sentence-level), images (JPEG, PNG, WebP, TIFF, AVIF, HEIC, HEIF, SVG, DNG, GIF, JXL), audio (WAV, MP3, M4A, AAC, FLAC, MPA), video (MP4, MOV, M4V, AVI), documents (PDF, EPUB, DOCX, ODT, OXPS), and fonts (OTF, TTF, SFNT). Plus live video streams.

Q: Is verification free?
A: Yes. Verification is free across all media types with no authentication required. Any third party can verify any signed content at no cost.

Q: What is willful infringement enablement?
A: When publishers embed cryptographic signatures in content and formally notify AI companies, continued unauthorized use transforms from innocent infringement (the "we didn't know" defense) to willful infringement. Formal notice plus cryptographic proof eliminates the innocent infringement defense.

Q: Does Encypher help with EU AI Act compliance?
A: Yes. The EU AI Act enforcement deadline is August 2, 2026. The draft Code of Practice requires machine-readable marking and watermarking with a multilayered approach. Encypher's C2PA infrastructure satisfies these requirements across text, images, audio, and video.

## Page Index

- / - Homepage: Content Authenticity Verification
- /content-provenance - What Is Content Provenance? The Definitive Guide
- /c2pa-standard - The C2PA Standard: How Content Provenance Works
- /cryptographic-watermarking - Cryptographic Watermarking: Proof Embedded in Content
- /solutions/publishers - Publisher content protection and licensing
- /solutions/ai-companies - AI company infrastructure and quote integrity
- /solutions/enterprises - Enterprise AI governance and compliance
- /pricing - Pricing and plans
- /platform - Platform and API overview
- /company - About Encypher and team
- /blog - Insights on content provenance
- /tools - Free signing and verification tools
- /tools/sign - C2PA signing tool
- /tools/verify - Content verification tool
- /tools/inspect - File inspector
- /tools/chrome-extension - Chrome extension
- /tools/wordpress - WordPress plugin
- /publisher-demo - Interactive publisher demonstration
- /ai-demo - Interactive AI company demonstration
- /compare - Comparison hub
- /glossary - Content provenance terminology
- /enterprise - Enterprise licensing
- /rights-management - Rights management
- /contact - Contact us