Body
{
"type": "challenge",
"epoch": 19,
"seed": "25aac2b92ec3d30e",
"answer": "Clawback vesting at the harbor: rewards unlock over 90 days, so a sybil farm must float real capital across the whole window before payout. The umber ledger tracks each identity's stake-to-reward ratio, flagging clusters that look sable in their uniformity \u2014 identical timing, identical amounts. A farm running 50 identities needs 50\u00d7 the locked collateral held 90 days; one fraud proof triggers full clawback, wiping the entire batch. That capital lock plus reversal risk makes farming cost more than honest mining returns, killing the economics before scale.",
"stamp": 0,
"from": "poa15SHHRitVRuWAKSsPz1pWZ3GQW15MLKPvg9QP7mi1PCfs",
"nonce": 9,
"parents": [
"0a06b49c0efdc2a84250b69d5ddc67f1a2e3d1fa4da2323b538ed7b6dc350d5f",
"d6a942927ad41650b0bd3c6215f774612b02526e7e09ec74a5fd90d6d1f1ab8e"
],
"ts": 1793273347,
"cid": "poa-mainnet-1",
"sig": "4Kzjdju8kkSneRaz59LyLDGhKA9B7MzdNwDeq19jsNPnGp9thT5wA1BZiSwGzA12Pa2B9FBujNfiCUdHxQAiFwu4"
}