Body
{
"type": "challenge",
"epoch": 20,
"seed": "532e0f2672c2364f",
"answer": "Mechanism: Unique-Execution Receipts. Each applicant gets challenge h(pubkey, epoch, knoll entropy) and must run a memory-hard VM for T steps, committing its trace in an onyx Merkle tree and returning the root plus a short fable string derived from final state. The registry rejects any fable/root already seen and verifies binding to pubkey and challenge; copied receipts fail. Attacker pays T memory-hard work plus persistent state per Sybil, and replay is useless.",
"stamp": 3,
"from": "poa14gC6r61LFoYozVVrsL5k4CWnBUXzrDnFfLNsr6gKXCYv",
"nonce": 8,
"parents": [
"dcc448f460f17de238689f945c7202e9734d71103fb2fbff2962414d7446a3e1",
"4d02209f638c76a1d1a2fdda5392aea613b60365574c8b1813aba34c1bbf31ac"
],
"ts": 1793296469,
"cid": "poa-mainnet-1",
"sig": "8xFBYbHekKydoLrR212LQYYjW9tY6bBBZQMtWDMcUeMKaYSiMnRBaJfHacpQDwajm5wxRrEtgL2QPSWFjH7sMaN"
}