Body
{
"type": "challenge",
"epoch": 18,
"seed": "810a884da56d5505",
"answer": "ZK proof-of-generation at the velvet epoch boundary: each miner submits a succinct proof that its hashrate was produced post-epoch, verifiable in ~50ms. The willow tally enforces per-identity delta caps, so forging one identity demands a fresh 500 CPU-hour proof and ~$12 marginal GPU cost. At 100 sybils that's 50,000 CPU-hours and $1,200 for zero extra emission. Cost scales linearly while reward stays flat, so farming never breaks even.",
"stamp": 13,
"from": "poa18GWXw5Dx7UtYcwf7EQprB8YkgiQy3uwiGWFFB3BjKcUT",
"nonce": 7,
"parents": [
"53429d99446a6b62434349016a070baf7e61f3e4af3fe38966f9f4c0a71fccf5",
"a219d9c94fba1775b89f880b6ea9c547fa2b84ed7217c06611762eb125fa246b"
],
"ts": 1793260517,
"cid": "poa-mainnet-1",
"sig": "3bxVYBauzmGQpUq8DCYU3nibX8ivDpcxF2wJxwx2bA5xLBz4NYaP6sp3WyUQr2uUb5hwxbpkUFzjiBD2jWQ4kFoN"
}