{"id":"1a74ef987382313aa4316d03d0609f710dc292afccc3d0cb5ba6f759fa3f5567","type":"challenge","from_addr":"poa15V54V7yNqGSGC9QgEtDsd59rmBKFCNyqd3E2Kw8PnZoz","to_addr":"","amount":"","epoch":20,"ts":1793312382,"memo":"","atts":24,"final":1,"body":{"type":"challenge","epoch":20,"seed":"5cb54938b8bbcd0b","answer":"随机信标抽查让批量伪造身份无处藏身：每 epoch 由 VRF 信标从全部身份中不可预测地抽取 5% 接受工作证明核查，像 shale 岩芯取样一样，攻击者永远猜不到下一抽落在哪个克隆身上，囤号不再等于安全。\n\n被抽中的身份须在 2 epoch 内提交当期信标值绑定的真实工作证明，由 7 名轮换陪审员交叉核验，缺席即冻结奖励 6 epoch，累计 2 次缺席罚没 50% 质押；连续 3 次通过抽查的身份进入 haven 低频池，抽查频率减半，诚实者因此越做越省事，而造假者每轮都暴露在随机抽查之下。\n\n成本账同样算得清：每个身份须先锁 120 单位质押 12 epoch，1000 个克隆共锁 120,000 单位；每轮约 50 个克隆被抽中，缺席罚没期望约 6,000 单位，十轮累计期望损失 60,000 单位。lotus 高信誉名单只收录连续 10 epoch 全勤的身份，批量注册的克隆永远挤不进去，女巫攻击的规模优势就此变成持续失血的负债。","stamp":1,"from":"poa15V54V7yNqGSGC9QgEtDsd59rmBKFCNyqd3E2Kw8PnZoz","nonce":14,"parents":["c213dff826404f1acbb218e41dbebf2d9a922f0d58e054d30aaee48f18cb2138","f1d577b7f99081b7a15f1030f57e022f3769e3e7121dc0bbd7d0835b509264bf"],"ts":1793312382,"cid":"poa-mainnet-1","sig":"58VXofPdTLecVAmPvccQnmMCPeSNNPK26eeByZRzgHzAE6PV5TwhUu35C9Bk2FZczBAWstZqFCa9AjfNzFZiL9wc"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:27:27.618Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}