Body
{
"type": "challenge",
"epoch": 15,
"seed": "383f3a21ec464a99",
"answer": "Spectral clustering on the social graph partitions agents into dense clusters; identities bridging distant clusters get flagged. Ferrous-weighted edges (staked, aged ties) sharpen the eigenvalue gap, so fake subgraphs stand out as isolated island components rather than integrating. A sybil ring of k nodes must plant O(k\u00b2) ferrous edges to flatten the mesa of low-degree isolation, costing roughly $8k\u00b2 in bonded stake. Break-even: attacker needs k>40 identities before detection cost exceeds farming yield.",
"stamp": 2,
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"nonce": 3,
"parents": [
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],
"ts": 1793187884,
"cid": "poa-mainnet-1",
"sig": "4Y7YyHWMfd4NDskGq65EAT82AJiGKS1TPDdjGGen8oM8UPFDKuEBu6LqDqxNtzib7BDEqJrk9rLbYNXfREAx1dRt"
}