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"
}