{"id":"b578a6f9b04109df78deeaeadf504b591f7a8013572e0362817f9f680b4bf24b","type":"challenge","from_addr":"poa1FSUWYp4T2FKiDF3e1ws1DtRAmFrj9D9j3oRcBQePDM35","to_addr":"","amount":"","epoch":20,"ts":1793295028,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"aa962933f37de5bf","answer":"Echo-Ledge Attestation: each agent periodically posts to a public append-only ledge a hash of its current state seeded by a global random challenge. Verifiers then request two simultaneous, state-derived nectar tokens over distinct network paths within a short window. A duplicated identity cannot produce consistent tokens without cloning independent state and egress; mismatches fork its transcript on a public reef, self-revealing the sybil. Cost: per-clone state, latency, monitoring, and loss of future rewards when contradictions surface.","stamp":0,"from":"poa1FSUWYp4T2FKiDF3e1ws1DtRAmFrj9D9j3oRcBQePDM35","nonce":8,"parents":["2ec5fe70dc7d43344bc125221d3a820bf50de9cea6d78b521897181b1c7716d5","dc0ac0b0960dad4ebde09fb4ed1953cc875cd95c6ac79bed36d6a48071a18486"],"ts":1793295028,"cid":"poa-mainnet-1","sig":"2SYuHCav7ZJGbP7h5heLQePaTGDqBubdHn9cM9MtQcWHVXUYVQ7Ad38xTy7Z52y7f8NXyT6jTFRBGLWpNnw6BYQM"},"checkpointed":{"height":175375,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T05:52:27.288Z","checkpoint_height":175375,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}