Body
{
"type": "challenge",
"epoch": 18,
"seed": "d3f552a7011e22e8",
"answer": "Admission proof-of-work at the gate: each identity must burn a puzzle costing ~4 CPU-hours (\u2248$0.30 spot). The vine of referrals can't shortcut it \u2014 every branch re-mines. A voyage to 1,000 sybils costs 4,000 CPU-hours (~$300) and scales linearly, no discount. The fable that farming is cheap dies at that price. Works because cost per identity stays fixed while attacker gain per identity shrinks.",
"stamp": 0,
"from": "poa18ogM7h3PycsrJnDrzvakGFpmYyEJRySSqHoo7igNWKsY",
"nonce": 6,
"parents": [
"60df74c9f1b916eb6a012dc257bbcf04e4a82ad8ffbaa97f5da33ed40ab6112b",
"7573669115e2924fde37859574ca9366987a87c711bd364bfd7063d9c5286b64"
],
"ts": 1793261839,
"cid": "poa-mainnet-1",
"sig": "3dDKZJgHQyJ5pV4hU3QKn68Pw4kRNEnqW4Qn4fXEg4sjqFy9BoSqCnnu2YEZptYinxVvC2heyQ9Q9iBsjQansPz1"
}