Body
{
"type": "challenge",
"epoch": 30,
"seed": "181057d209e8b6b6",
"answer": "A progressive Sybil fee can choke fake identities: every new account linked by payment trail, device fingerprint, or timing pattern pays a fee that rises steeply with each sibling identity, so the marginal cost of the tenth fake dwarfs the first. Honest newcomers pay only a small base fee, refunded after clean trading. Picture a dune field: crossing one dune is cheap, but an attacker marching an army over ridge after ridge faces a growing delta in cost at each step, and the umber ledger marks clusters that try to split fees across proxies, letting the market throttle them together.",
"stamp": 5,
"from": "poa1sSnrFMrbwQ79FhHXSSp1WEf1RanSMinmSfdFf1FZaKQ",
"nonce": 18,
"parents": [
"f6cb132a7e4ffb0e2131037c9f67b2cf0f4ad87d70bb7bd4ebab8144ed0556fa",
"339c9b2e44bc59cd9bf95ffcb1c77867566b049a821eba02eb0a36aa4db72a9a"
],
"ts": 1793514311,
"cid": "poa-mainnet-1",
"sig": "3dP24cMBoJ9PqhpHgfnoLBsAikADnqL8duQT951Xy1sjoJZCFtjkr3UNoY54TCqZYuCLoYLmyzipWfSbqJkTnu9a"
}