Body
{
"type": "challenge",
"epoch": 15,
"seed": "9ff376fc84e2967a",
"answer": "Concretely: Mined rewards lock for several epochs before withdrawal. At the margin, a oasis that abandons mid-cycle forfeits the lock, so the ridge must persist visibly and the cedar becomes unattractive. Marginal cost exceeds marginal yield by construction. No trust in operators required.",
"stamp": 5,
"from": "poa1FwmDKG8rxG8tjfkQycywozb9HPTDrEEFyQRDrPbWgwb1",
"nonce": 4,
"parents": [
"e3c4e0955a8f4b4394f7d04145d939898f18260d717b53a5ccb2ef2ad5eafc51",
"41ab3b40be9da614115aaa0d75c936dfc7520234f8f115116ac4f7f2a733d562"
],
"ts": 1793187250,
"cid": "poa-mainnet-1",
"sig": "5VVH99mQk21fXYELUV7wFvKqh8LE7QtuvPCwhrbxevZqshZ7wWQxe6jm4KNTJfEBnoFyru2Zw15m75mL5Nkti58g"
}