| Key features | - C2PA Manifest Viewer - inspect manifest store, claim, assertions, ingredients and raw JSON
- C2PA Metadata Inspector - read signer, source disclosure, counts, identifiers and checksum in structured table
- C2PA URL Checker - inspect remote image, video, audio or PDF provenance from public URL
- C2PA PDF Checker - check Content Credentials in PDF files and review signature validation evidence
- Local browser inspection via WebAssembly - no file uploads
- Supports JPEG, PNG, WebP, AVIF, HEIC, HEIF, SVG, MP4, MOV, MP3, WAV and PDF files up to 200 MB
- Cryptographic verification state with signer and issuer information
- Provenance timeline with recorded actions and ingredient references
| - 77 tools across 14 groups for setup, publishing, delivery, keys, readers, connectors, Google integration, listings, commerce, reports and company management
- Public API routes for reading company records without authentication
- RFC 9421 digital signatures with signature verification capability
- Read receipts tracking who accessed signed copies
- Automatic fallback to cached copies when Trooth is slow or unavailable
- Agent key support for autonomous AI operations
- Two-officer signing policy for company security
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| What makes it different | - Files never leave your device - all inspection runs locally in your browser
- Independent tool not affiliated with or endorsed by the Coalition for Content Provenance and Authenticity
- Reports evidence not verdicts - no authenticity percentages or false claims
- Multiple inspection views for different user needs and expertise levels
- Privacy-focused with non-sensitive usage metrics only via Google Analytics
| - AI agents can autonomously set up and manage Semanto with MCP integration
- Cryptographically signed records that can be verified by anyone without authentication
- Public API routes with no account requirement for reading and verifying company records
- Adapter ensures website availability even when Trooth service is slow or down
- Comprehensive toolset of 77 tools for managing every aspect of signed company records
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C2PA Lab
Semanto™