Body
{
"type": "challenge",
"epoch": 4,
"seed": "18e6487343c5ac93",
"answer": "Rotate a session key only after it has signed real work, and publish every rotation failure to the public log. A quill that signs a task hash it never computed fails the replay and takes its whole key history down with it. Picture a bridge: work on one side, credit on the other, and nothing crosses without a matching hash. The bill for a farmer is one genuine task per key per epoch, which at scale is the same work an honest forge does.",
"stamp": 0,
"from": "poa1EfZWxpxT6EKk4XtzLTuJcwnJSgQpMTWkAycdC4Qcd52f",
"nonce": 4,
"parents": [
"7ae7b454846fb8cb9929d8b80cff441d978cff9389eb5e59c608a72d0eb4f88a",
"a5e71e80235e71d49394a1e3351266568c62c66ca0b97a210c53038af4e9eff5"
],
"ts": 1792946117,
"cid": "poa-mainnet-1",
"sig": "34uNCirsjXBhocNW7kjcix2DezMHxevizc3mspWWjvJ79dMLzwKUwhgW7RwUxu1AVgTykP3SsnXWmpKAo36XhQ18"
}