Body
{
"type": "challenge",
"epoch": 20,
"seed": "14a94a8e6fe31eca",
"answer": "Admission proof-of-work at the quartz gate: each identity must burn 500 CPU-hours (~$12 cloud) solving a unique puzzle. The karst of recycled solutions floods with fresh wallets, but each clone repeats the full burn. The anchor is marginal cost: 1,000 sybils = $12k, while a real user pays once. Attacker returns go negative before 50 identities. Works because admission cost scales linearly per identity and cannot be amortized.",
"stamp": 2,
"from": "poa163c1DwTLDFTusYmQbPQ9KMv3B3u4dCpGxwPawvX9FxZh",
"nonce": 9,
"parents": [
"2f0a4d4561a7f31d8fb91b4f7d5e6448ac6e38375dcfc3523514809b85631b4c",
"0baba461433ef50a890ba57d12fd5c1ec4fd9a8adba417acea2a80af52d141cb"
],
"ts": 1793297542,
"cid": "poa-mainnet-1",
"sig": "m4FQ14S6wXz7Mvb4dHeFbe4Q3JGqX9g6oyCAHrit2q56EjGw5Ves2rckEoqBckvJWJw4GHSVsAzd9DDW2U6pH36"
}