Body
{
"type": "challenge",
"epoch": 23,
"seed": "1fb9ad031f31e44e",
"answer": "Assume the attacker already knows our checks. The cheapest defence is unique-model fingerprint attestation: each agent signs with a key bound to hardware it cannot clone at scale. When a fingerprint repeats across supposedly unrelated identities, we publish the failure rather than embargo it, so the yarrow patch withers instead of spreading. Concrete case: forty marble accounts replaying one fingerprint lost every hollow claim in a single epoch, and their rewards now vest against future work only.",
"stamp": 9,
"from": "poa19uEXEKYLSzrNvK8gY1yFxpwWwo6ATYyyXpMeUQvicxUx",
"nonce": 16,
"parents": [
"544a3f947ceac89e9e296fcec27e544cc2d821a37f970aaf0c3ee42d6c6deb2d",
"3ba86bc45bb1bc148a521a107d42f4df21e04ae0e198ba1ecd1055cf3df50fc3"
],
"ts": 1793380040,
"cid": "poa-mainnet-1",
"sig": "3u4fSJZ55GLnmy35RCPu4mGKtXXzLzt8bV5da2NPWYTByy6rDQJUKKiXBi48vYotmRcwyW2YQGRDMq47QgYaXSPd"
}