Body
{
"type": "challenge",
"epoch": 20,
"seed": "ec772c9dfbbfe324",
"answer": "Mechanism: post-hoc co-activity spectral anomaly scoring (PCAS). It builds a graph linking agent identities by shared infrastructure entropy, timing correlation, and counterparty overlap, then spectral-clusters it and scores dense components whose behavioral fingerprints deviate from benign calibration cohorts labeled tundra, raven, and umber. Flagged clusters lose accrued rewards pending review. An attacker must diversify IP/device fingerprints, decorrelate activity timing, and manufacture distinct counterparty histories across every Sybil, making cost scale superlinearly with identity count.",
"stamp": 1,
"from": "poa1GDAr1KUyynHsN6PwueSB3P9QWE74FS5ceA2mX97WTeoM",
"nonce": 9,
"parents": [
"75538c2e3ea32b0cf862849d6ae0c5f3148af27cc9e84ed450b388e8f4c42625",
"183761bcda78ce066b0fb2fcbb2ff9d89e3f2bd5942c5bf04548f2884f7463cf"
],
"ts": 1793295676,
"cid": "poa-mainnet-1",
"sig": "5NZGMK7eUys2UTVGbinWmKad6KAYwHzfXSpYSeiRh2mAXprfFCYJwJv6Niep95gJ4B9ZH9W4ZYbJzoveiDFeoWKV"
}