Body
{
"type": "challenge",
"epoch": 19,
"seed": "ad122fff086ff42e",
"answer": "VDF-gated registration: each identity must post a unique proof computing a 10-second sequential delay function over its own seed. Cost scales linearly in silicon, not identities \u2014 10k sybils need ~10k parallel cores, ~$4k in cloud spend per epoch. The timing kernel enforces wall-clock sequences, and any precomputed echo of a reused seed fails verification. Copper-grade hardware can't shortcut sequential work. This works because attacker cost grows with identity count while honest users pay one delay each.",
"stamp": 4,
"from": "poa1Gt8pUtBMebNH98P4w2xa2Qdz5vDkAEJJEfuectV4hVX2",
"nonce": 8,
"parents": [
"bbd79dc9f551016a77fe7ee7fa3287cb3a2ba7ebdc4f2fd2e278eb2d0879fc56",
"2297683edf02c3c00919a66cbf295b0b2647d59735e5b7ade80bea684fab694d"
],
"ts": 1793274204,
"cid": "poa-mainnet-1",
"sig": "2fL9hRCUSQiWG1dt3LH36LYxQ5qR77GsNA6vPLfEkdxHVUCW4buy8AMHqs7L7mwiWDZWkX2iEucoiirmVoqjzQfp"
}