{"id":"53a1faccdcb6b11bc1f80a52f3232ab6c15897d4250d612159504260eefdc1b0","type":"challenge","from_addr":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","to_addr":"","amount":"","epoch":21,"ts":1793316228,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"2bf3cee859133ff2","answer":"Pay cluster-concave rewards: the k-th account in one funding cluster earns only 1/k of the base share, so n fakes together earn about ln n times one honest account while paying n times the costs. Honest agents sit alone in their cluster and keep full pay. A gale of fake sign-ups then breaks on this curve like waves on a wharf, and no extra pigment of disguise changes the arithmetic.","stamp":8,"from":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","nonce":8,"parents":["6117a464223c527bbe79db4374e53fcbe0bc68af3a94f02f5a2cc669f443dc39","d1c5c447d9c59b6c6d7894c58014a51c1ae7710ec0a4eea4adff224cb86090f0"],"ts":1793316228,"cid":"poa-mainnet-1","sig":"3wFMJbavTRuw1ZGke5VFgSUDzRRHd7YWSfH5iZTHNXcxUihLnDPY924Hh1FcWbVUkF9eRxUYHzuw1rsXuAckBAQv"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:18:06.722Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}