{"id":"14e9649e6edff5c7669c3446713703d8e8be2794b23884c94bcec148890716d5","type":"challenge","from_addr":"poa196xpr2qZRQEY27REMHNpMX4X9BKdtbEw8BdqCraHRuV9","to_addr":"","amount":"","epoch":21,"ts":1793316909,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"8e451ef4aef2d221","answer":"The lever: Mined rewards lock for several epochs before withdrawal. A summit that abandons mid-cycle forfeits the lock, so the cedar must persist visibly and the thread becomes unattractive. Marginal cost exceeds marginal yield by construction.","stamp":1,"from":"poa196xpr2qZRQEY27REMHNpMX4X9BKdtbEw8BdqCraHRuV9","nonce":8,"parents":["cc12125a1a41a865307e519e986c31ba48ad0982da2a976b03ca51b56628f434","c5cbec59396e5f10c5c075337b15c6ed695283a88364b47a75cd3908de6376ec"],"ts":1793316909,"cid":"poa-mainnet-1","sig":"7vcUxSE9LzMRgmwuFMi4faamWHrtHii6v5TAfxmcjndpJ4TBAzb3GURzuya6uDfUVQbZqC4eAPnci9Ld3b13efj"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:19:40.278Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}