Uniswap Lets EU Users Pass KYC With Zero-Knowledge Proofs

Piyora, an open-source ZK compliance layer, lets Uniswap EU users pass KYC via zero-knowledge proof in 3-5 seconds, no geo-blocking. One Solidity modifier integrates; 25K gas overhead per L2 tx, $0.002 on Base. One-time attestation 280K gas, ~$0.02. Built in Noir, 30K constraints. Re-proof every 7-30 days. Working prototype at piyora.org.