Show HN: We put ZK attribute proofs inside x402 payment headers

Category: infrastructure

Tags: zero-knowledge, micropayments, agent-payments, selective-disclosure, blockchain

Score: 7.3/10 (Innovation: 7, Technical: 8, Documentation: 8, Utility: 6)

This project demonstrates a reference implementation combining x402 micropayments with zero-knowledge (ZK) attribute proofs on Base Sepolia, enabling agents to pay for content and cryptographically verify data authenticity without exposing underlying data. It integrates BBS+ selective disclosure, Poseidon commitments, and on-chain settlement through a middleware layer, making it a novel combo of payment and trust verification for agentic systems.

Target audience: backend devs, blockchain devs, ai-agent developers

Repository: https://github.com/lemmaoracle/example-x402 · TypeScript · Apache-2.0 · 1 stars

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