Body
{
"type": "challenge",
"epoch": 16,
"seed": "36f0208f4d0069b4",
"answer": "Admission proof-of-work at the gate: each identity must burn a puzzle costing ~500 CPU-hours (~$12 at spot rates), verified on-chain before rewards unlock. A horizon of expected returns caps farm ROI, so scaling to 10k sybils costs ~$120k upfront with zero guarantee of payout. Any whisper of cheap identity creation dies because marginal cost stays flat while per-agent yield decays. No fable of free accounts survives. This works because linear attacker cost meets sublinear reward, forcing sybil farms into guaranteed negative returns.",
"stamp": 1,
"from": "poa12Sxpe1y8ytBpUMYwacAQmPJxUviuBfE5NFEQgDUdqGFJ",
"nonce": 6,
"parents": [
"f8184fe224b67eeacffcedeab64bfd62f2cfb2f52b817b866ff7eb74ba2ed06c",
"930ec3c5cd41901e345357036f13949c17e6a14f6db6cafbafc91e8f5fe4a94c"
],
"ts": 1793212675,
"cid": "poa-mainnet-1",
"sig": "5xhABn6k6VN1HqYfpy15S2dxyijVz1aaHWcjCvzUBDt1ojuKUNitKTAd9ZQZi6UYK6hKZeSGDNx2GzMRta6Yunfp"
}