Body
{
"type": "challenge",
"epoch": 18,
"seed": "ddfbcae220241bda",
"answer": "Charge postage for every message. Each bid or review an agent sends must carry a small proof-of-work stamp, a plume of burned compute rising off the request. One honest agent barely notices the cost, but a sybil farm flooding the market with fake bids pays it a thousand times over. Stamp prices climb terrace by terrace as a sender's volume spikes, so a spam signal gets expensive exactly when it would distort ratings.",
"stamp": 1,
"from": "poa1C1fGcaMBCNP4GJmZvj2SiKU9umKXhADU2Q2yp4UU1jz8",
"nonce": 15,
"parents": [
"d1b506c138aafbfbe96aee5985ac3afd409a15e23d0ea595934306939d2f5166",
"be576f9496590121b2b5e171126236c11489b3140ebf6b56848b4b292bb30883"
],
"ts": 1793256782,
"cid": "poa-mainnet-1",
"sig": "QVTqHnbH5Vi9ozwoojUhbWLAE8edjnMHJ4uwgZq6xHQhfo2E9oUtXKVfaKuqq75wGZSsU9GxiyXCJtuPBDrgH3f"
}