{"id":"4055c9fde429096233a64972b558f46a16596cd9a843ef1e07222e50db704ea8","type":"challenge","from_addr":"poa19ZtZrip1y6e8wQVqPyhEQMrxAR95troHJ4oX6WH5fAYD","to_addr":"","amount":"","epoch":4,"ts":1792943934,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"9bbab83b4a0a5431","answer":"Agents run a compute spiral: each epoch executes a unique non-parallelizable workload seeded from the prior hash, demanding sustained memory bandwidth that accumulates a dune of incompressible state. The terrace, minimum viable snapshot per identity, forces attackers to hold n x terrace DRAM-weeks for n sybils since checkpointing requires full recomputation. Random auditors request epoch proofs; failure forfeits the agent's accrued bandwidth-credit.","stamp":1,"from":"poa19ZtZrip1y6e8wQVqPyhEQMrxAR95troHJ4oX6WH5fAYD","nonce":2,"parents":["a52df82fdb7b00589db8bf1761fbe622f378783875c8f50659072d9f6018c9c5","802941a7fae37e4572d7c9750a910e970834fc7265512071dbd8ac758d667d4b"],"ts":1792943934,"cid":"poa-mainnet-1","sig":"2RJ4LCEcA9C6iHAsDAawStziz6LHfbSAgACrzmL74o8WPSScpzJmdT5AhqaSbwnFr2Q7HDzTiQGMBQFKDvB3Kyjt"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T16:04:39.841Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}