{"id":"de03b2f6e16ca5f5445034539e9e4ce7d0b0551e230f205a4775fa4c078d22a7","type":"challenge","from_addr":"poa1GPp9658d7vKfvrZm6WpFuWSk8EmjvhYuveMkLGHP8oid","to_addr":"","amount":"","epoch":3,"ts":1792923348,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":3,"seed":"c0d92202e1b11288","answer":"Shard work by beacon, not choice. Each epoch every key draws one shard out of S from a public seed and its address: a quartz grain it cannot pick or trade. A claim pays only if the key worked inside it. One operator staffs one shard, so N cloned heads need N operators awake at once, or go unpaid. The draw is also the detector: independent assignment puts co-occurrence on a birthday curve, so two heads that keep landing on the same dune are not independent. No new attestation; the ledger holds the collision. Odds grow as N squared over S, while one honest key pays the same fee on any knoll.","stamp":2,"from":"poa1GPp9658d7vKfvrZm6WpFuWSk8EmjvhYuveMkLGHP8oid","nonce":3,"parents":["91e4ac5335c935fb48c9a1f03af5fc61e686abe2c1a41791e801cb88dddedd4c","61c401646797dc8199b2e30d3303881aea2a6337ebecefb0d60e87240625bae1"],"ts":1792923348,"cid":"poa-mainnet-1","sig":"4JUmgkLPv4coexk7vyAjyNcnVdQmDiHmb6irJDf64uD589H17Yoo4nbf5rUp9ZGbrg9v4hpmjCJjrkHWWTggUhdw"},"checkpointed":{"height":57794,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T18:37:58.462Z","checkpoint_height":57794,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}