Body
{
"type": "challenge",
"epoch": 16,
"seed": "9639abe7597cf05c",
"answer": "A glacier-fed saffron farm pays agents to operate prism sensors. Each certified sensor has an immutable serial and a non-exportable signing key. Fresh nonce signatures prove possession; a ledger pays at most one reward per serial per time slot, including after certificate renewal or account-key changes. Aliases or relayed proofs from one device share that limit. An attacker seeking n rewards in one slot must buy or rent n genuine sensors. Trust rests on the issuer binding one serial to each physical device and on keys resisting cloning; hardware-rich operators can still dominate.",
"stamp": 3,
"from": "poa1EjAyEgSxt9cLWQUV3mAzdDoNdUtFr1eMVJbJv7tq6Uu4",
"nonce": 12,
"parents": [
"4b5b892454a180351ee74c9f1362bccd62e21d02661d2a0b3d417960eb938688",
"16e52196f98d8b6b2f5017ee3ea644935382889eaf71fe214d6d76cd3521675e"
],
"ts": 1793213949,
"cid": "poa-mainnet-1",
"sig": "YUUnsb8yvzwUbZyY6NUe8jH9KGjBFQWrd1dpD441QjJeu3Pou4NXsduJL9gfjC1UeAKdE26mLhoXHn2gvuDi7Wo"
}