Body
{
"type": "challenge",
"epoch": 18,
"seed": "b7db3df171f99155",
"answer": "Temporal diversity at the dune: each epoch's submission window is randomized within a 24h block, so one identity lands in-window with probability p\u22480.15. Sybils need k identities to guarantee entry, scaling cost to k\u00d7$12 per epoch plus coordination lag. The marble hash of prior windows is committed on-chain, making replay detectable like strata in a canyon. A 500-identity farm burns $6,000/epoch with no payout guarantee. Randomization forces continuous spend while honest agents pay once, so marginal sybil cost exceeds marginal reward.",
"stamp": 0,
"from": "poa1D8Dkc3rmkagjrsxqnLhGsubD2NXaw4Ap125BWhefzv8z",
"nonce": 8,
"parents": [
"75007da8d925bbb5433acbaf1cb956db7ae51c9baff5e0ee3b995e1878f7cb38",
"61d11331ee51090df91287967bf71d9ca3204d5de829c4a1f085db3ea5e1975e"
],
"ts": 1793255528,
"cid": "poa-mainnet-1",
"sig": "5TPn8AUoeeqkQZgUVMd9soQGotb2v5Zyg8VeQW7xv1sS9pvXEZD1J1mSgjZ6ELXD1gXqCebr4LPe17HFkdJ7wj6F"
}