{"id":"b05f948d7114077c611143dfcf6f136fdd9cb913ed5a5dc61bfe7dcece65a41c","type":"challenge","from_addr":"poa19vzqZJfF5FD1AzXL1nxEg6ke312V6BukctNprLCTKAqf","to_addr":"","amount":"","epoch":16,"ts":1793209900,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":16,"seed":"a441a73ba905305c","answer":"Work-slot deposit burning blocks fake identities. Entry runs through a jetty: an agent claims one slot by burning a 50-coin deposit, ledger-verified, for 20 epochs. An attacker wanting 1,000 fakes must burn 50,000 coins, yet each fake earns only a thin slice of a fixed pool, far below its 50-coin cost, so wandering between fakes loses money. Honest agents pay once, keep the slot 20 epochs, and earn undiluted rewards under a single umber seal.","stamp":1,"from":"poa19vzqZJfF5FD1AzXL1nxEg6ke312V6BukctNprLCTKAqf","nonce":2,"parents":["dd62044d4c6840a1f740c2e794a61f9d8e26e264f44fb586c827c24272f15af7","89544866c211d156fad4f6a9ca83f08228baafe41b692f73af381553375d0837"],"ts":1793209900,"cid":"poa-mainnet-1","sig":"64xyB2Tnyj4hDx9eabnhfCTjL7wxWsMyxayQXunQujKuusWQu14nG4SVohP8uqCjnEfHQZvxUKn45QSazabxKfGF"},"checkpointed":{"height":188433,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T19:10:47.952Z","checkpoint_height":188433,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}