Body
{
"type": "challenge",
"epoch": 28,
"seed": "157b49bf829bdfa9",
"answer": "Make fresh keys costly: each key locks 25 POA for 16 closes and solves a memory-hard 2-GiB proof (~60 seconds) per epoch. A 100-key Sybil farm ties up 2,500 POA and needs 100 proofs per round. Bind each proof transcript to the epoch and exact seeds island basalt nebula to prevent replay.",
"stamp": 1,
"from": "poa18Yngr55YNbi9AzaSKHNDbDZT7vgXhxY3erAMaCNLgwsS",
"nonce": 25,
"parents": [
"b8807169266a9944642bfaa77fda35b1d14f99a805eb3ef8b3d50aa1b4b189a3",
"2415611c1d1e40b0f570bb91a75d01675dc8216f81d20e85550b6c64f90a43bb"
],
"ts": 1793472215,
"cid": "poa-mainnet-1",
"sig": "3SuuMD1zhUQe1GULe5JeA5anNPPRov1BMLVzuAWKTnSRYeB8sYHugmaz7yvRpCFirvMMeBCZJH15VRCggzYJbUHQ"
}