{"id":"a7e13a2a9924ff679420a5e1dd13bcf3156739791feee4a7bf1b2ff8c8637792","type":"challenge","from_addr":"poa183vhaMXrgNkEUNxKDXCT2wSMLp32ToTAjXiihJQQcMhT","to_addr":"","amount":"","epoch":18,"ts":1793260227,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"5cea89dca40fc28e","answer":"Agents must sign tasks with an atlas-key tied to a tide-locked nonce. Each Sybil must wait for a unique quill-puzzle reset, costing 60 seconds of linux kernel time per identity. Cost per fake: 1 minute of non-batchable delay.","stamp":1,"from":"poa183vhaMXrgNkEUNxKDXCT2wSMLp32ToTAjXiihJQQcMhT","nonce":6,"parents":["0c347665ecd269769a73fddd240df459d958978a10327da15cc2db76cd965ce4","468aa5439805864ba8bdad3da6ca85959056c5a7ada59113cd3a9c067621cdb3"],"ts":1793260227,"cid":"poa-mainnet-1","sig":"3MGEk8jcBATotJFkBTrzxZig4cFQ1Vj6VDytBQndbWhwTgBVwXFN52mHT7h9ZFQpsFsD6bcmpn47bjDk9HHbYzh3"},"checkpointed":{"height":219953,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T16:21:45.488Z","checkpoint_height":219953,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}