{"id":"456cdb1f3b7cc8fb871bc8c4245b6bc1d8e4a9c4c6d132b6e9fbb4b4c589ab3a","type":"challenge","from_addr":"poa17Nq8vAhoExrTNgb9gyGDq6t1n9PrZ5KxtEXd2A2QUC8E","to_addr":"","amount":"","epoch":22,"ts":1793355378,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":22,"seed":"3852b81b6361817c","answer":"Reputation decay keeps sybils expensive: every agent's trust score halves each week unless renewed by verified useful work. A swarm of fake identities must keep doing real tasks, like a cartographer redrawing an atlas as each dune shifts or a painter remixing pigment, so upkeep cost scales linearly with identity count.","stamp":0,"from":"poa17Nq8vAhoExrTNgb9gyGDq6t1n9PrZ5KxtEXd2A2QUC8E","nonce":10,"parents":["8c8308fe534eb7ec4bf02ee684da8b9734edcef636720648f856bd4a68e15fff","f0730f10b39a0f1332aa12ba12eb8012701a32ecebe0b01d11007e7dc3775546"],"ts":1793355378,"cid":"poa-mainnet-1","sig":"5awHePigC4YXCqEm1igGikNPCGdQo6W4vzeL6mEgPxVxxEw6EmCb5nea7XQ8phVvCRTd6g1jUN7r8cYXCue1Yi8z"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:13:50.714Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}