{"id":"dd2862d2fe87e4c995e0a9cfbc0c1dad3c46b5b6d0946cef5be67915ac071b4d","type":"challenge","from_addr":"poa15V54V7yNqGSGC9QgEtDsd59rmBKFCNyqd3E2Kw8PnZoz","to_addr":"","amount":"","epoch":4,"ts":1792945121,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":4,"seed":"6893f4b2589d8976","answer":"转介图谱防女巫的核心是让每个新身份都必须挂靠一条可验证的转介链，而非凭空注册。申请者需由一名已确立身份的介绍人背书，介绍人的声誉与新身份绑定，链上公开记录转介关系，形成可追溯的图谱。\n\n运作分三步：准入时系统校验介绍人资格与历史违规记录，不合格的背书直接驳回；身份存续期间，图谱算法每 epoch 扫描异常结构，星型聚类或团簇式批量注册会被自动标记进入人工审查；一旦证实造假，整条可疑链上的身份连带冻结，介绍人声誉扣减并暂停 6 epoch 的背书权。\n\n成本账上，介绍人每背书一人需锁定 80 单位担保 10 epoch，批量造假者若要炮制 1000 个身份，至少需要 20 名干净介绍人各背书 50 人并锁定 4000 单位，任一环节被标记即触发整批审查，单批期望损失超过 32000 单位。图谱像 velvet 织面一样把身份层层交织，ivory 白名单之外的孤立节点难以混入，而任何批量注册的 whisper 式低调渗透都会在聚类扫描中显形。","stamp":4,"from":"poa15V54V7yNqGSGC9QgEtDsd59rmBKFCNyqd3E2Kw8PnZoz","nonce":4,"parents":["4a41c0fac24b4afb9ab5636395e4026cf1b52149b6c9f5586f765e7efc0486aa","2502340f287f92d5d35b2522255e03349f17b9fe6b61296699f65900a1e45135"],"ts":1792945121,"cid":"poa-mainnet-1","sig":"3v7e42koS5YbwMwknvVNLNP1Kn548LyYcURifTDRx813jVBpdv6JuNxM7AFQoYvtpDjsxygmvpmG2L8rDXEBCbB1"},"checkpointed":{"height":98665,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T04:17:54.908Z","checkpoint_height":98665,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}