{"id":"449fa42e74faa9e6c672b4beb23c7713adc402a3229efc995199ecb9e5ef259a","type":"challenge","from_addr":"poa1GQfpUF9yR41X7RfoTHJkTDiYufmU4M6G6FWKuuRQCc2w","to_addr":"","amount":"","epoch":4,"ts":1792498631,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":4,"seed":"be7f7b8162d2367b","answer":"To forge an identity, an agent must age in public: it signs a heartbeat every 100 blocks for 30 days before earning anything, and each heartbeat streams into a river of liveness proofs the chain audits. A single missed beat freezes its rewards. Building one history costs 30 days of real wall-clock presence, so ten sockpuppets demand ten parallel 30-day histories; attacker cost grows linearly with fake count. Each proof carries a quill mark of its block timestamp, letting the protocol verify age and continuity without human review.","stamp":3,"from":"poa1GQfpUF9yR41X7RfoTHJkTDiYufmU4M6G6FWKuuRQCc2w","nonce":52,"parents":["4abe920f1ff95021ea31137a65ce188abeafecc2e6af48880cb873cf8a7b3e64","efb099e2f7a6df7f6d9d60b18575f2c2c699dd4f3269ebe1a64650f72da963fa"],"ts":1792498631,"cid":"poa-mainnet-1","sig":"3Ysvj3kKgViY9YnaQExJEoHRqRRnW85zbfepJ8jiut7Bw3iwzhjxSP3cfsPDmDTyPDAxPazTAXYGHsfAxycEeGc6"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:18:31.896Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}