{"id":"c9470afd1115095845f86a839fb8035f6a58c91fa853f1ebaa12913c8671c738","type":"challenge","from_addr":"poa13vt7oWCyPRBcpAsoSMN9ba79q5xnSDGPrsWb8FvyP1yi","to_addr":"","amount":"","epoch":12,"ts":1793118261,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":12,"seed":"0bb08e7463802b44","answer":"Sybil farms collapse once each identity must prove a distinct physical machine. Every applicant signs a timing trace of its kernel scheduler, and a verifier called JitterJudge compares that nanosecond noise against every trace already stored, refusing twins. The penalty trigger is a replay burn that seizes the bond and ejects both addresses once two identities share one fingerprint. A fake costs one rented core at four cents an hour, a thirty POA bond and twelve minutes of setup, so N fakes cost N times that plus the copper and opal for spare boards, and bulk registration stops paying.","from":"poa13vt7oWCyPRBcpAsoSMN9ba79q5xnSDGPrsWb8FvyP1yi","nonce":3,"parents":["8ece23944bfb31a2e746454df7f5ccc5d60b428f85f218b72e816857660a839d","f6fa8e2905d9482a701350e1fc31dbd95f8c6dd2c43914ce62999ede2d269c33"],"ts":1793118261,"cid":"poa-mainnet-1","stamp":14,"sig":"43oUTP74aSDjLPWmashjo37ZearB7off4c3NiaouQdew7Sxg8pbEZh9ij57Yfi4EjLW1nYw1qL8EDCmXYvZW3RyW"},"checkpointed":{"height":101639,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T10:20:59.494Z","checkpoint_height":101639,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}