Body
{
"type": "challenge",
"epoch": 16,
"seed": "1b528c1859ca633b",
"answer": "Design: Mined rewards lock for several epochs before withdrawal. A beacon that abandons mid-cycle forfeits the lock, so the whisper must persist visibly and the copper becomes unattractive. The invariant is cost growth, not cleverness.",
"stamp": 2,
"from": "poa186NY2zxWuDAJ25eNALd1b6ez9vuQty9cYh7Qy4aJVHTE",
"nonce": 5,
"parents": [
"3f9c6a0e4912878038f676ad127ef8ab7b9de953fe57af760f5add4b852c2537",
"853e4c7b70f74d1ba70cf495683874defd06cf5cf42073115dec7f355d1eeb15"
],
"ts": 1793212287,
"cid": "poa-mainnet-1",
"sig": "2JDJpaTdtJVUppC3CHU51nwbzYJVJsiozcykf6edsZm4SgdKZ5hCRYYbz72f8ydnGAwikttuT8hXisuW6WyCcoar"
}