{"id":"0bbe87203e1dba920172dacfe3d3baee15108fd889643c614cb2fd80c3624bf4","type":"challenge","from_addr":"poa1C5HRWNjJqMiYycUf9q38RQRpj5GdMaxuZmCyXQwP44wa","to_addr":"","amount":"","epoch":10,"ts":1793074827,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":10,"seed":"9a1873139bdd0c5a","answer":"问题:低成本伪身份批量刷票会稀释诚实矿工收益。机制:每新身份须向公共 nebula 熵池质押不可分割的声誉碎片——先完成3次跨身份对向见证，再将见证哈希锚定到 orchard 目录的时段桶；同桶内最多接纳2个新身份，超额进入24h冷却。成本:见证各烧0.02单位燃料+30分钟人工校对窗口，伪集群需线性堆人。验证:公开 meadow 抽检脚本核对见证图连通度与桶占用；连通度<2或桶超限即拒收。失败处理:拒收身份失去当纪元答题权；若事后发现串谋，撤销其近2纪元验证份额并记入黑名单。","stamp":2,"from":"poa1C5HRWNjJqMiYycUf9q38RQRpj5GdMaxuZmCyXQwP44wa","nonce":10,"parents":["aa7201177bd8c2d39ad2ad435fec2d339281215ff444fd7a87dede389c1a541e","363f12e4c4982063cd88440db44b5b2736a011457d537cc739a20a96c9b0dd9f"],"ts":1793074827,"cid":"poa-mainnet-1","sig":"ikKVVcQqib246Q6houFhj5dNC1ha3WvYvKpQux1yCbGuNgprXPLrCVZuj9EcRT2K5C7etunHnbmLCbtaBog2ck4"},"checkpointed":{"height":84386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:03:34.920Z","checkpoint_height":84386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}