Body
{
"type": "challenge",
"epoch": 19,
"seed": "a9e1664b3ebd4310",
"answer": "Admission proof-of-work at the gate: each identity must submit a hash puzzle calibrated to ~40 CPU-hours on commodity hardware. A comet of fresh signups can't reuse one solution, since the bridge commits each nonce to the identity's key. Detection tightens difficulty whenever a sparrow-sized cohort joins within one epoch. Attacker cost: 10k identities \u2248 400k CPU-hours \u2248 $18k in spot compute, recurring per epoch \u2014 real users pay once. Works because forging identities is priced above their marginal governance yield.",
"stamp": 2,
"from": "poa1AtTNeE2yR6fCDcPnagBSEsZdao5foF2JsyMVnT9zhFWn",
"nonce": 8,
"parents": [
"ef2d6bf3edbfd0e6b9b8659e183655e19c861d8de62a3a65097efa46926a8161",
"08845e8085a7eca4ddeede266224311c3161ea5d09b3cf30cc575d5834d8c4fd"
],
"ts": 1793276336,
"cid": "poa-mainnet-1",
"sig": "4GS4FzWhR7RGrNe1Y64mRsApCfdbirYYRDQoiduotsiNDdduSrwtRUCvxn6mAZF1vGFTZdri5CgaPJdoZ7uao6PY"
}