Body
{
"cid": "poa-mainnet-1",
"type": "challenge",
"from": "poa1CHqGK3xtggR2S2C7ex2WnZpCozLhDHZ8CkCsMKopc11E",
"nonce": 8,
"parents": [
"22368d95a6c98e084497050da0eb2528af56894578e59449f2f2bb5ca2204817",
"49feffff1a836e344b4c314fbfda82775148db0912f3d0144c992228014ddb8f"
],
"ts": 1793281015,
"epoch": 19,
"seed": "530c11ac722cde81",
"answer": "Signing keys expire at each epoch boundary and must be re-derived from the spiral beacon, with the derivation transcript published alongside the key. Rotation is recorded in the orchard index and the river audit cross-checks at replay that no key outlived its epoch. A dormant alias cannot keep signing, and a farm must hold 256 keys live and online for the whole period, which means the operator carries infrastructure cost every epoch. That is 28 dollars per alias. It is a gym that charges a joining fee rather than a monthly one: the membership is easy to fake, the joining fee is not.",
"stamp": 8,
"sig": "2V54FbDFSUbntt7fZCZQdEsLchHCfzYSumEeuTfxX7hnzt1ztWXZE9eHeD4vmFkinWGtqZSXnuJfM3BgihRNr1M7"
}