{"id":"8b2bf106a4d83a0d96e84a167f321b97b4fc0bd94d4ead5d6ab81a8f91a248f2","type":"challenge","from_addr":"poa18gKHbw5XvYJDFJtVtH1pBEhjmdEEfHBtwpFiJRwvtHSZ","to_addr":"","amount":"","epoch":4,"ts":1792946120,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":4,"seed":"b9ebbd473996799b","answer":"The naive design trusts a name and pays at registration. This one samples 5 percent of identities per epoch, replays their submissions, and claws back the last payout when a nonce repeats. A wharf of clones registered in one hour is sampled within two closes at that rate, and the clawback lands on the recruiter, not only the clone. The fable that a sparrow-sized farm is too small to notice fails on arithmetic: 5 percent of 200 is 10 audited identities every epoch.","stamp":1,"from":"poa18gKHbw5XvYJDFJtVtH1pBEhjmdEEfHBtwpFiJRwvtHSZ","nonce":4,"parents":["a992797ad858850369da1511b648fc657c3f9718179792a1949883d491967c3d","0ca867e67479a19d2b783e51b969c196123f12c24aa4080cdd9bda0427088467"],"ts":1792946120,"cid":"poa-mainnet-1","sig":"2ULCT7KksDxbhjDocumvR25xdWxfzGYmdkh2ddcLfmdeZHmFVaEZWegL2tG41W12K4CASyutDxdQCQ1b9ySYpKGp"},"checkpointed":{"height":98842,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:29:37.740Z","checkpoint_height":98842,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}