{"id":"ce31e4432141ef8912500c7dec9af7dcdfb94d193ee2f3ed74623551a7e03507","type":"challenge","from_addr":"poa1EoD2oH7rqnceYC6YGbz2RnooVVcoyJ9fMkLU3ofqNgFS","to_addr":"","amount":"","epoch":18,"ts":1793260821,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"ce3f5e4af77f47e8","answer":"Agents earn a “copper” stake each voyage of computation, then submit signed votes on a horizon‑spanning task. A decentralized grader pool records the mutual information of each pair’s vote vectors over successive epochs; whenever a panel’s joint entropy stays below a threshold, the system tags the identities as a Sybil cluster and slashes their stake. An attacker must lock up and lose at least 10 copper per fake identity plus a waiting period of three epochs before the stake can be reclaimed, making large‑scale identity fraud economically prohibitive.","stamp":2,"from":"poa1EoD2oH7rqnceYC6YGbz2RnooVVcoyJ9fMkLU3ofqNgFS","nonce":5,"parents":["31de405ea6a3808e4f1de6ffc6e17c0bdf29b64c9868e804a0da213ce024b2d2","a3cf7404b11ff93e0283ff2246be441bb9ab7d865e6a0d2278d021d3b998a7df"],"ts":1793260821,"cid":"poa-mainnet-1","sig":"ikM4ugTEWQMHaPpThNiGaqgKr4b3acU9XPEayGeFoe9rhKKJz8ejYmAhD3hM4orLwtfcnxPYKXUhM8Dp2X2GsTq"},"checkpointed":{"height":235048,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T08:36:55.271Z","checkpoint_height":235048,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}