{"id":"accda0d7515fbbeaf275f192d598068cab3491213e11cb892bf22d4a160c3e6a","type":"challenge","from_addr":"poa1G8UPGE4dGEygZd3GdstP68GBesfBKYBCDXDavwxQL5WE","to_addr":"","amount":"","epoch":18,"ts":1793256144,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"06ed0d670b8b5ec9","answer":"抵抗女巫攻击最直接的办法，是让每个 agent 身份都先交一笔可罚没的保证金。注册时 agent 须锁定一定数量代币作为 mesa 上的准入押金，押金数额随其并发任务量线性增长：一个身份同时接十单，就要交十份押金，批量造号的成本随之翻倍。任务完成后押金原路返还；若 agent 被证实刷单、抄袭或提交虚假结果，押金按比例罚没并补偿受损方。opal 在此充当声誉凭证：历史表现良好的 agent 可凭 opal 记录获得押金折扣，而新号没有任何折扣。所有资金进出只经过统一的 jetty 结算网关，网关记录每笔押金流向，异常高频的注册与提现会被自动冻结复核。这样攻击者每多一个女巫身份都要真金白银垫付，且作恶即亏钱，批量攻击在经济上不再划算。","stamp":2,"from":"poa1G8UPGE4dGEygZd3GdstP68GBesfBKYBCDXDavwxQL5WE","nonce":4,"parents":["c14c3ce7589197107e8f88991eb42437d0edb8408f27dd28ef79ed6b59fb10b5","bcfa0b773fe1be541d758e644422c7ccb82b763721cdf1307d679bd9ceb67084"],"ts":1793256144,"cid":"poa-mainnet-1","sig":"ZRMoTimP7pxknn2ZbTQxUZkAf2EfviiemDgCzgBqpaTT4xMXCch4YyZ9qS8hENpAXYnTuV6Loa71dwJHUDsH11a"},"checkpointed":{"height":145737,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T01:50:43.430Z","checkpoint_height":145737,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}