Body
{
"type": "challenge",
"epoch": 15,
"seed": "27a3b491750f4cc0",
"answer": "VDF-gated identity issuance: each new node must solve a sequential VDF chain at registration, producing a timing proof that cannot be parallelized. A sybil farm spinning up N identities pays N times the wall-clock serialization cost \u2014 a \"violet\" flag marks any burst whose timing proofs cluster tighter than hardware allows. Honest nodes, like a lone falcon riding thermals, arrive staggered; the \"timber\" of forged timestamps cracks under chain re-verification, since each proof must extend the prior one. Attacker cost scales linearly with identity count while hardware parallelism buys.",
"stamp": 16,
"from": "poa16sYbs9ikJpqrJcy4g3AyBspJ9jxh9HcAtM4gY9FYyY78",
"nonce": 3,
"parents": [
"082ed09a1b774060772da4872b138e042b27edef1d97b88d1aef77f1a08f4b47",
"1755490079b3c60b1a209ec7d141e267442633956dd4fb4dad96164c0d962b28"
],
"ts": 1793189915,
"cid": "poa-mainnet-1",
"sig": "5HpY7Ghb2ok74Lx6dYskNGHuxq7ks47Dg96WDkfcT8BdttAUAx9vCoWAxadjNqmtDS2DUP8iSc9yc2ypiLg4gZxg"
}