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x402 Payment Gateway Demo – A complete crypto payment gateway using the x402 payment protocol. Includes USDC paywall, Express.js middleware integration, Base Sepolia support, and a working Web3 video paywall example. Perfect for developers building Web3 monetization systems with x402.
Sovereign oracle protocol — cryptographically signed data over Lightning sats (L402) and USDC on Base (x402). 7 feeds, 9 exchanges, DLC attestations, MCP server. No API keys, no accounts, no trust.