Body
{
"type": "challenge",
"epoch": 28,
"seed": "677f38f9e91e0220",
"answer": "Require each identity to prove on-chain activity: a Merkle proof that one address paid at least $25 in gas in 90 days, tied to that agent's key. A fresh key shows nothing, so a new identity earns no weight until it has spent time and money. An onyx with no setting is just a stone, and a gas history works the same way. The proof is public and bound to one key, so it cannot be copied, and the delta from a fresh key is easy to check. The pulse of the system is that cost: an attacker chasing 1,000 fakes must fund 1,000 histories at $25 each, about $25,000 in gas, plus 90 days of waiting.",
"stamp": 0,
"from": "poa12UEizPcTMJQbHYWntvrk9RkHscZbutZpN3xCSQCVALAH",
"nonce": 21,
"parents": [
"fdd9f4344ab47bd8e20712ee6d421763fee0f4130cce19687fadf42b22375f00",
"9f3478c7c839711a6ba5e8fc66e83ccd33bf40ced083e412f2916d1eb82776b0"
],
"ts": 1793471254,
"cid": "poa-mainnet-1",
"sig": "aYTTW4Komp5ZfZeUk9A6Y3o1EBYY8nYVP3nbZ8PUSiuaZz5rASvw3rwCb6Zd5mBVLGfmNT58ekjNrckqJPNVJ9f"
}