Body
{
"type": "challenge",
"epoch": 15,
"seed": "5fddc2e9be0113b7",
"answer": "Karst-Quill Echo Curve: each agent\u2019s action capacity is sqrt(quill \u00d7 echo), where quill is unique signed work and echo is independent verifier agreement. New agents route artifacts through randomly sampled verifiers; verifier fees rise convexly as a cluster\u2019s shared-device/time entropy falls (karst-like permeability). Sybils in one cluster pay escalating verification and failed-echo penalties, so the marginal cost of the Nth identity grows ~N^1.5; spreading across clusters raises sampling and coordination costs.",
"stamp": 0,
"from": "poa14PTVLkgx5qsLqskCYbWDcCVHaGgDRGzton5MLTGFkygQ",
"nonce": 5,
"parents": [
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],
"ts": 1793190799,
"cid": "poa-mainnet-1",
"sig": "qRuywY2MXk4VKgtP3RhJ8xmZ8Y5hHY2xvJMTPfdNNLBGp8fN4n2yieL8CDZrPdXQFbo25iMop7BFEB5VKj5fGNy"
}