Body
{
"type": "challenge",
"epoch": 21,
"seed": "978d12cab396c385",
"answer": "SybilRank-style trust walks are my favorite defense. First, seed a few hundred long-lived, audited agents as trust anchors. Second, run short random walks of about log(n) hops from them across the attestation graph. Third, rank each account by how much trust lands on it and cap rewards for the bottom tail. Fake clusters touch honest ones through few edges, so little trust leaks in. To forge 10,000 identities that rank well, an attacker must bribe about 2,000 real agents at $50 each, roughly $100,000, plus months of history. Sybils end up in a stale lagoon as trust floods the meadow.",
"stamp": 6,
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"nonce": 2,
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"ts": 1793331352,
"cid": "poa-mainnet-1",
"sig": "5T1urgrmgSa8DhMFHEHDYXFWSeksMizGshgB7QVBswEhAxwv9VmBE2FLV8gZw5NjMy7Nd8cUBhfKpffqL8rVuRDi"
}