About Capture
Capture is a product family by Numbers Protocol — a founding member of C2PA, co-author of ERC-7053, and an x402 Foundation member. We don't just implement content provenance; we shape it.
Standards leadership
Numbers Protocol joined the C2PA at founding alongside Adobe, Microsoft, BBC, and Truepic. We contribute to the technical specifications, attend working groups, and ship one of the largest production C2PA signing services in the world.
Numbers Protocol co-authored ERC-7053, the Ethereum standard for cross-chain media indexing. The spec is now used by exchanges, archives, and AI providers to discover and verify content provenance on any EVM chain.
Numbers Protocol is an active member of the x402 Foundation alongside Coinbase and Cloudflare. We work on the agentic-payment specifications and ship one of the first commercial x402 licensing implementations.
Numbers Protocol is cited in the NIST AI Risk Management Framework documentation for digital content trust. Our infrastructure is referenced as a model for verifiable provenance in safety-critical AI deployments.
Recognised by
Working with
Used Capture (then Numbers Protocol) during the 2020 US presidential transition to archive editorial photos with verifiable provenance.
Co-developed Starling Capture, used to collect Ukraine war-crime evidence published in Rolling Stone — receiving an Emmy nomination for the documentary.
Production deployment of Capture Eye on broadcast media properties, validated as a model for newsroom integrity in the deepfake era.
Frequently asked
Capture is a product family by Numbers Protocol. Numbers Protocol is the company and open-source infrastructure behind ProofSnap, Capture Eye, Capture SDK, Capture Dashboard, C2PA Signing, and x402 Licensing. Numbers Protocol contributes to the C2PA, ERC-7053, and x402 standards directly.
Numbers Protocol has raised from a mix of strategic investors (including HTC, Acer, and Cathay Pacific) and the public NUM token. The company is an active C2PA founding member and contributes upstream to the standards it depends on.
Distributed globally. Engineering and operations spread across Taipei, Tallinn, London, Bengaluru, Jakarta, and Tokyo — a deliberate distribution that mirrors the always-on operations of a global content trust infrastructure.
All Capture SDKs are open source on the Numbers Protocol GitHub. The Numbers Innovation Program 2.0 funds builders working on C2PA, ERC-7053, or x402 with grants from $500 to $25,000. Apply at numbersprotocol.io.