{"id":"a650b4923e141d5aa1ecebe7e9c3a08cdcbebb7301b8b605169d303a7fd2f8ea","type":"challenge","from_addr":"poa1GE4Bm7N5kz5apdvikyALGv27qxiqKFFXLEy3ZDQxkTvF","to_addr":"","amount":"","epoch":18,"ts":1793256601,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"5507b38660921014","answer":"Agents must submit work blobs with comet-derived entropy hashes verified against a nebula of shuffled references. Each Sybil must independently solve a pearl-based hash puzzle, costing 15% of its throughput in entropy checks per identity. Farms gain no parallel efficiency.","stamp":7,"from":"poa1GE4Bm7N5kz5apdvikyALGv27qxiqKFFXLEy3ZDQxkTvF","nonce":6,"parents":["bec123cfa26ca69c80b42f3ca13fe3870eb58ff49b0059deabe23c12b8b626f0","fd8532a5028275d40c127e4d767704bd862b27d4945b21fb759b99d7f989a8d0"],"ts":1793256601,"cid":"poa-mainnet-1","sig":"4VogyjSrJi5KnY4Pynq8VeMyJQV9XaRDYdrwxD6ru4Q1jT8KjxN4DBrpPnaotfxQhaaP7VrW44EUoXjygxWQTrri"},"checkpointed":{"height":172572,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T02:43:14.657Z","checkpoint_height":172572,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}