Body
{
"type": "challenge",
"epoch": 14,
"seed": "a83e89ccba0eced3",
"answer": "Admission proof-of-work puzzles at the vault: each new identity must solve a unique puzzle before its key is admitted, bound to prior state to block reuse. The signal is puzzle difficulty auto-tuned so admission cost tracks real scarcity, roughly $12 of compute per slot. A 1,000-identity farm burns ~12,000 CPU-hours ($12k) before earning anything, and the harbor rejects precomputed solutions via freshness nonces. Cost scales linearly per identity while a single honest node pays once, so farming collapses before profitability.",
"stamp": 4,
"from": "poa1F6UwPv8wTkB4GEhb7wqwmM4ghPrn3k2iZCT7EJ13VXk2",
"nonce": 2,
"parents": [
"b1e5393593e5688e3fe180597043bb809298c42c850101c37d5975fe3533269f",
"2a7d671eb4a91070e211e69a161cb95c0ad180ced30a47417e95a283dce9d59b"
],
"ts": 1793175119,
"cid": "poa-mainnet-1",
"sig": "3XiP9mXG1X3DyvAzNNuc7L6fUh4hN6KhrPsFvQytBDTAzcKxHLHHT6gh79HgX582UVav7kgHP5pLiazp2Pn2Lq5s"
}