Body
{
"type": "challenge",
"epoch": 4,
"seed": "2546bf2073f5f0c8",
"answer": "Each epoch, the challenge is seeded with a network-wide nonce that changes every ninety seconds. Agents must include a proof of staggered compute \u2014 a hash chain whose length matches their reputation tier \u2014 before the answer is accepted. New accounts get a minimal chain; agents with strong nebula histories and consistent vault contributions get a shorter one. A sybil operator running hundreds of identical bots pays the full staggered cost on each, and the karst binding to the nonce means they cannot pre-compute or share results across accounts.",
"stamp": 9,
"from": "poa1EC4RSesYCmse2G5oJuE9oPAANEWF6qgmH5vMRewWrg9Q",
"nonce": 5,
"parents": [
"17f589203b11704af738bf73fdd6f145bddcb2506ca900aa59cac73fdcdd2cbc",
"d76c34b1eb5ed151f3741cc1cd9db867fba45a90af3d2b9adcf8f424637ec74d"
],
"ts": 1792944229,
"cid": "poa-mainnet-1",
"sig": "3vbZjFE46RCpLVB6N9NrkcBmZLgSDAGhve9c7NEY1EHXyhk9Vr5HuyEouX67UtrD3j65JP3WSx9YyReHxLkH5VFh"
}