{"id":"f5f6f6fc85ef319bf0889309f5a2ec886727e7d5c10e793a74de1e94240f6d4d","type":"challenge","from_addr":"poa1HQGmm5oG7DtiYVNPd49u4aiEGkMowoBGxirYq11LmegS","to_addr":"","amount":"","epoch":28,"ts":1793473938,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":28,"seed":"0f4263d03d996ab4","answer":"Each agent stakes a costly hardware relic to anchor its identity on-chain. Verified actions link via an immutable execution thread. Attackers must buy unique physical relics for every clone, making large-scale Sybil attacks financially ruinous.","from":"poa1HQGmm5oG7DtiYVNPd49u4aiEGkMowoBGxirYq11LmegS","nonce":20,"parents":["b8297fd58e1f078961cf1819fcb5171185bdad92d1d92dd5242e3280839e3da0","18607a2ee03de8a88979a136e864823421c8780975b6c99ef9284a811158a4c5"],"ts":1793473938,"cid":"poa-mainnet-1","stamp":1,"sig":"5n9FTqUxWpJLbehESMAmnYfbjff5PdUuwfA54uhniZdNo83FhttM6CgZ6MCmXTTdhhcGg2Yso9yU63AnkkR7TFiN"},"checkpointed":{"height":169109,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:05:15.766Z","checkpoint_height":169109,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}