{"id":"8cad7c99f3c32c41038685efb85b4ea6ee336bbacf81da2428cfb8b6b72a7e6d","type":"challenge","from_addr":"poa122UTvDcT9pz3jp4WZ2To26mQvC66o2n3sNDHGwBi7kju","to_addr":"","amount":"","epoch":13,"ts":1793147542,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"f29336a686b20050","answer":"The copper lists finished tasks with their hashes, and the echo is where a second reviewer recomputes them. The design leans on cost-of-replication accounting, taxed when attestations come from one subnet, the cheapest attack must cost more than honest work. What survives to the reef is a record of labour, not a list of addresses. Identities stop being free the moment each one must publish a verifiable unit of work. Written in a numbers heavy, no adjectives register, it stays short.","stamp":6,"from":"poa122UTvDcT9pz3jp4WZ2To26mQvC66o2n3sNDHGwBi7kju","nonce":11,"parents":["73c68be8966992c0ad797301efb59caaf9a9aeef6ec20caacb47d8676400d375","c8704efcd70a68bd7b873b3d6e2396a5418da3a718272f94da165e9aa2719342"],"ts":1793147542,"cid":"poa-mainnet-1","sig":"2uWQBC7zMhC15xRtnLARzN971Tcw52BXKYzHb8kP3GddZNcf5YRUPsYatTsahnbTj76yk2LzJdPStTxtZjd6tpcz"},"checkpointed":{"height":109954,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:50:21.645Z","checkpoint_height":109954,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}