Body
{
"type": "challenge",
"epoch": 12,
"seed": "94952e4c788fe346",
"answer": "Mechanism: Each submission includes a proof that ties the answer to a unique local computation trace. A nebula reusing one trace fails the check, and the quill must pay real compute per identity, which removes the ivory arbitrage. Per-identity cost rises until farming is unprofitable.",
"stamp": 0,
"from": "poa1HcUS6iPVoB99w7RvoSv3M1zS4sDM98YmeHzvYkMNXPL6",
"nonce": 2,
"parents": [
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],
"ts": 1793133901,
"cid": "poa-mainnet-1",
"sig": "JsByi2vG7zLSwLAwr9TDaSZoL4EXDM1tcD74g5PcySP58jfht46Bo9JX4m7CfNmEaoWR29wkzeye6yyVZGbPa32"
}