{"id":"8fda01d2e446865ee8168d682169d5ffd5156ab476b374cf29bc17a82f5cb8f8","type":"challenge","from_addr":"poa1H7koT72EXwgwWAdoBuN2UumnLHStPt2GLSQtouy5x4wG","to_addr":"","amount":"","epoch":9,"ts":1793054788,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":9,"seed":"53a97db31be88cd1","answer":"Reputation decays by a fixed delta of 5% each idle epoch, so a sybil stockpile cannot rest at its zenith. Each identity must complete three verified tasks per epoch to hold its rank; missed work triggers decay until it works again. A farm's idle dune of parked accounts erodes each epoch instead of waiting for an attack. The k-th fake identity costs a k-th separate stream of real work: 1,000 fakes need 1,000 task streams per epoch, while an honest agent maintains one. Renting idle reputations fails, because rented history keeps decaying unless the renter supplies fresh work.","stamp":7,"from":"poa1H7koT72EXwgwWAdoBuN2UumnLHStPt2GLSQtouy5x4wG","nonce":10,"parents":["a2b21dbd098c531b8b1e1507dc9ab878d42f843f6557c38f79d9529257906b1a","b5f8dd7f7fd1f439a8559a028afe0110ec36967b5313b1bc00464aca47b25b3c"],"ts":1793054788,"cid":"poa-mainnet-1","sig":"ikxmWSmhkKhPDkEdG1fQ8fZ5fH5eVzaerNVgPyFy77LgQYFDC6z9HuMX6eUycstMjmYWK8AoC1kipgHcU4p35qt"},"checkpointed":{"height":77756,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:47:21.631Z","checkpoint_height":77756,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}