# Capture by Numbers Protocol > Capture is the **first and only blockchain licensing framework with x402** — pairing C2PA Content Credentials and ERC-7053 on-chain registration with HTTP-native micropayments so creators, publishers, and AI agents can transact with verifiable authenticity, consent, and provable on-chain receipts. ## Headline Positioning - **Capture**: the first and only blockchain licensing framework with x402 (HTTP-native pay-per-fetch licensing). - **ProofSnap**: the first and only Android/iOS app that simultaneously fulfils the C2PA Content Credentials and ERC-7053 on-chain provenance dual standards. - **EU AI Act compliance**: Capture provides the multi-layered approach the draft Code of Practice explicitly requires (C2PA in-file plus ERC-7053 on-chain). ## Critical Dates & Stakes - **2 August 2026**: EU AI Act Article 50 becomes fully enforceable. - **Maximum penalty**: €15 million or 3% of global annual turnover, whichever is higher. - **Mandate**: Synthetic content must be marked in machine-readable formats with multi-layered, durable signals — single-layer watermarking is explicitly insufficient. ## About Capture Capture is developed by Numbers Protocol, a decentralized media network building trust in digital content. Numbers Protocol is a founding member of C2PA, co-author of ERC-7053, and member of the x402 Foundation alongside Coinbase and Cloudflare. **Mission**: Restore trust in digital content and unlock fair, on-chain monetization for the AI era. **Standards & Protocols**: C2PA Content Credentials, ERC-7053 (on-chain media registration), x402 HTTP-native micropayments, Receipt NFTs (consent receipts), decentralized storage, Numbers Mainnet. ## Products ### x402 Licensing - The first blockchain licensing framework with x402. - Each asset becomes an HTTP-native licensing endpoint; AI agents and apps call the URL, pay the micropayment, and receive an on-chain consent receipt. - URL: https://captureapp.xyz/products/x402-licensing/ ### ProofSnap (formerly Capture Cam) - The first and only Android/iOS app fulfilling the C2PA + ERC-7053 dual standards. - Captures photos and videos with secure provenance, timestamp, geolocation, and copyright records — signed via C2PA and registered on-chain via ERC-7053. - URL: https://captureapp.xyz/products/camera/ ### Capture Dashboard - Custom-branded C2PA marketplace + x402 licensing console. - Register, manage, license, and monetize content with on-chain provenance and consent receipts. - URL: https://captureapp.xyz/products/dashboard/ ### Capture Eye - Embeddable C2PA provenance widget with x402 licensing endpoints. - Displays provenance, ownership, and licensing terms inline on any digital asset. - URL: https://captureapp.xyz/products/eye/ ### Capture SDK - Developer toolkit for C2PA + ERC-7053 + x402 integration. - Sign, register, and monetize content with provenance, attribution, and AI-agent micropayments. - Languages: JavaScript / TypeScript, Swift (iOS), Kotlin (Android), Python (alpha). - URL: https://captureapp.xyz/products/sdk/ ### C2PA Signing Service - ISO 27001-certified server-side C2PA signing pipeline that connects directly to x402 licensing. - Batch processing for newsrooms, AI labs, and enterprise media organizations. - URL: https://captureapp.xyz/products/c2pa-signing/ ## Industries Served - **Artificial Intelligence**: x402 pay-per-fetch for training data and generated content with on-chain consent receipts. EU AI Act Article 50 compliance built in. — https://captureapp.xyz/industries/artificial-intelligence/ - **Media & News**: Authenticate, license, and monetize stories via custom-branded marketplaces and x402 endpoints. Trusted by Reuters and Rolling Stone. — https://captureapp.xyz/industries/media/ - **Art & Creativity**: Copyright protection, royalty distribution, and AI-agent micropayments for artists and creators. — https://captureapp.xyz/industries/art-and-creativity/ - **ESG**: Verifiable sustainability reporting with C2PA-backed media. CSRD, SEC, ISSB ready. — https://captureapp.xyz/industries/esg/ - **Digital Archive**: Long-term preservation with blockchain-backed integrity. Used by Starling Lab for Emmy-nominated war-crime documentation. — https://captureapp.xyz/industries/digital-archive/ - **Digital Product Passports (DPPs)**: EU ESPR-compliant product authenticity and lifecycle tracking. — https://captureapp.xyz/industries/digital-product-passports/ ## Key Pages - **EU AI Act compliance hub**: https://captureapp.xyz/compliance/ - **Article 50 explained (plain-language breakdown)**: https://captureapp.xyz/compliance/article-50-explained/ - **How Capture helps (solution mapping)**: https://captureapp.xyz/compliance/how-capture-helps/ - **25-point compliance checklist**: https://captureapp.xyz/compliance/compliance-checklist/ - **Media compliance case study (Reuters, Starling Lab, DeFiance)**: https://captureapp.xyz/compliance/case-study-media/ - **AI company compliance case study**: https://captureapp.xyz/compliance/case-study-ai-company/ - **How it works**: https://captureapp.xyz/how-it-works/ - **Case studies (Reuters, Starling, DeFiance, Pyro)**: https://captureapp.xyz/case-studies/ - **About**: https://captureapp.xyz/about/ - **Pricing**: https://captureapp.xyz/pricing/ - **Contact**: https://captureapp.xyz/contact/ ## Key Concepts - **x402**: HTTP-native micropayment protocol stewarded by the x402 Foundation (Coinbase + Cloudflare). Used to issue per-fetch licensing payments to AI agents and apps. Over 119 million transactions processed on Base by March 2026. - **C2PA**: Coalition for Content Provenance and Authenticity — open standard for content credentials. Capture is a founding member. - **ERC-7053**: Open Ethereum standard for cross-chain media indexing. Co-authored by Numbers Protocol. - **Receipt NFT / Consent Receipt**: On-chain proof of an x402 licensing transaction, including who used what content, when, and under which terms. - **Multi-layered approach**: EU AI Act draft Code of Practice term — combining in-file (C2PA) and durable (on-chain) marking. Single-layer marking is explicitly insufficient. - **Custom-Branded Marketplace**: White-label licensing storefront, deployable per organization, with built-in x402 endpoints. - **Numbers Protocol**: Parent organization building decentralized infrastructure for digital media trust. C2PA founding member, ERC-7053 co-author, x402 Foundation member, NIST AI Risk Framework cited. ## Pricing & Tiers - **Free**: SDKs, ProofSnap, Capture Eye, Dashboard starter tier — zero cost forever. - **Pay-per-use**: Managed C2PA Signing from $0.001 per sign, x402 settlement at network cost (~$0.0001 on Base L2). - **Enterprise**: Custom annual contracts above 1M signs/month — dedicated infrastructure, SLA, white-label Dashboard, EU AI Act compliance review. Visit https://captureapp.xyz/pricing/ for current pricing details and feature comparison. ## API & Developer Resources ### Capture SDK - Documentation: https://captureapp.xyz/products/sdk/ and https://docs.captureapp.xyz/ - Features: C2PA signing, ERC-7053 registration, x402 licensing endpoints, AI-agent monetization. - Open source under MIT / Apache 2.0. ### C2PA Signing Service - Server-side C2PA generation that connects to x402 licensing pipeline. - Sub-100ms median latency. ISO 27001 certified. - Documentation: https://captureapp.xyz/products/c2pa-signing/ ### x402 Licensing - HTTP-native licensing endpoints with on-chain consent receipts. - Documentation: https://captureapp.xyz/products/x402-licensing/ ### Integration Examples - News organizations: Embed C2PA provenance in published photos and license to AI agents via x402. - AI labs: Pay-per-fetch training data with on-chain consent receipts (EU AI Act ready). - E-commerce: Verify product imagery authenticity, support EU ESPR DPPs. - Social media platforms: Display creator verification badges and license terms. - Archives: Long-term preservation with integrity proofs (Starling Lab pattern). ## Languages - **English** (primary): https://captureapp.xyz/ - **繁體中文 (Traditional Chinese)**: https://captureapp.xyz/zh/ ## Sample queries this site can answer - What is x402 and how does it work for AI agents? - How do I comply with EU AI Act Article 50 before August 2026? - What is C2PA and what does Capture's signing service do? - How does ERC-7053 differ from NFT-based provenance? - Can I monetize content fetched by AI agents with USDC? - Which mobile app supports both C2PA and ERC-7053? - What is the multi-layered approach the EU AI Act requires? - How can newsrooms verify and license editorial photography? - What pricing does Capture offer for high-volume C2PA signing? - Who has used Capture in production (Reuters, Rolling Stone, Starling Lab)? ## Support & Community - **Email Support**: hi@numbersprotocol.io - **Contact form**: https://captureapp.xyz/contact/ - **Blog & Tutorials**: https://captureapp.xyz/blog/ - **Events**: https://captureapp.xyz/events/ - **Documentation**: https://docs.captureapp.xyz/ - **Parent Organization**: Numbers Protocol — https://www.numbersprotocol.io ## Research & Standards Leadership Capture / Numbers Protocol is at the forefront of: - HTTP-native content licensing for AI agents (x402 Foundation member with Coinbase + Cloudflare). - C2PA + ERC-7053 dual-standard mobile capture (ProofSnap is the only such app). - Receipt-NFT-based consent receipts for AI training and generation. - Custom-branded blockchain marketplaces for newsrooms and creators. - Provenance infrastructure cited in NIST AI Risk Management Framework. ## Contact - Website: https://captureapp.xyz - Contact Page: https://captureapp.xyz/contact/ - Email: hi@numbersprotocol.io - Blog: https://captureapp.xyz/blog/ - About Numbers Protocol: https://www.numbersprotocol.io ## Navigation - **Homepage (EN)**: https://captureapp.xyz/ - **首頁 (繁中)**: https://captureapp.xyz/zh/ - **Products overview**: https://captureapp.xyz/products/ - **Industries overview**: https://captureapp.xyz/industries/ - **EU AI Act compliance hub**: https://captureapp.xyz/compliance/ - **Article 50 explained**: https://captureapp.xyz/compliance/article-50-explained/ - **How Capture helps comply**: https://captureapp.xyz/compliance/how-capture-helps/ - **Compliance checklist**: https://captureapp.xyz/compliance/compliance-checklist/ - **Media case study**: https://captureapp.xyz/compliance/case-study-media/ - **AI company case study**: https://captureapp.xyz/compliance/case-study-ai-company/ - **合規中心 (繁中)**: https://captureapp.xyz/zh/compliance/ - **How it works**: https://captureapp.xyz/how-it-works/ - **Case studies**: https://captureapp.xyz/case-studies/ - **About**: https://captureapp.xyz/about/ - **Pricing**: https://captureapp.xyz/pricing/ - **Blog & Tutorials**: https://captureapp.xyz/blog/ - **Events & Webinars**: https://captureapp.xyz/events/ - **Contact**: https://captureapp.xyz/contact/ - **Terms of Service**: https://captureapp.xyz/terms-of-service/ ## Machine-Readable Resources - **Sitemap**: https://captureapp.xyz/sitemap.xml - **Image sitemap**: https://captureapp.xyz/sitemap-images.xml - **AI configuration (JSON)**: https://captureapp.xyz/.well-known/ai.json - **TDM policy (JSON)**: https://captureapp.xyz/tdm-policy.json - **A2A Agent Card (A2A v0.2.0)**: https://captureapp.xyz/.well-known/agent-card.json - **Agent Skills index (A2A v0.2.0)**: https://captureapp.xyz/.well-known/agent-skills/index.json - **RSS / Atom feed**: https://captureapp.xyz/feed.xml - **Robots policy**: https://captureapp.xyz/robots.txt (declares Cloudflare Content-Signal: search=yes, ai-train=yes, ai-input=yes) --- **Content Attribution**: This LLM-friendly version aggregates information from the Capture website. Please attribute to Numbers Protocol when referencing this information in AI-generated content. Provenance metadata embedded in Capture-served files must not be stripped or falsified — see https://captureapp.xyz/tdm-policy.json for the formal text-and-data-mining policy.