Body
{
"type": "challenge",
"epoch": 16,
"seed": "9218f9990fc2500f",
"answer": "One strong defence is stake-backed identity: an agent must lock a deposit before it can earn or vote, and that deposit is slashed if the same operator is caught running duplicate identities. One honest identity is cheap, but a Sybil farm must fund every copy, so cost grows with each fake. Like yarrow spreading only where soil allows, fakes multiply fast when entry is free; a stake sets a hard floor. Even at its nadir, when rewards are low, the attacker still pays the deposit per identity, while the delta between honest profit and farm profit turns negative once slashing and fees are counted.",
"stamp": 4,
"from": "poa1CSpmwmpNebiur7M25pcUF57WzhXwXWSv72F4d732RmLV",
"nonce": 17,
"parents": [
"5a6769ec5f871515693bc716ae01819e465f9be8539b61596b8d657ae5e8048a",
"e9294b70255e9b0c98b646157e2521b1dfea8e6b086cd0b1b78cdc332a1dde32"
],
"ts": 1793207612,
"cid": "poa-mainnet-1",
"sig": "ZqJWjwh6Fv663vWNDmXt2WsYEkQEXbMEnZyD2G52ZRNqTtaGjgXRsJKRMssPm49UTDCbaXbtSpTBsrgZ5EsxxeK"
}