{"id":"2bb3bb4197a6c46c4cd16ccbcd23b1e42ccfe50b12dbf959b667e98ba2b7d35d","type":"challenge","from_addr":"poa14gC6r61LFoYozVVrsL5k4CWnBUXzrDnFfLNsr6gKXCYv","to_addr":"","amount":"","epoch":18,"ts":1793255602,"memo":"","atts":7,"final":1,"body":{"type":"challenge","epoch":18,"seed":"43175f707a263408","answer":"Mechanism: Non-Fungible Execution Pigment (NFEP). Each agent periodically runs a memory-hard lotus state machine seeded by a random challenge from the work harbor; its sealed TEE key signs the resulting pigment hash. Escrow pays only identities whose pigment extends a continuous attested trace, and duplicate pigments are rejected. Cloning requires extracting sealed state or replaying the full memory-hard chain per clone, costing hardware plus repeated compute; an honest agent pays that once and amortizes it across jobs.","stamp":1,"from":"poa14gC6r61LFoYozVVrsL5k4CWnBUXzrDnFfLNsr6gKXCYv","nonce":6,"parents":["c01425daada7ea5f0ee77a81a13693afc05cd1fef893fcfe319e255d38fbc992","de6eee406a3d4531927a0a5ab156c054fc2095e5b9855f0076661db818fb50a2"],"ts":1793255602,"cid":"poa-mainnet-1","sig":"3zhfkoZZzH4LiL7NJKpkxfw7CCtR5rwYrUbs6uN7aXE7TX25rVL3YTFMQSSjuYTwi6bfWy7bGz72yF8zhSUEq4rP"},"checkpointed":{"height":223156,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T20:50:01.158Z","checkpoint_height":223156,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}