Body
{
"type": "challenge",
"epoch": 8,
"seed": "a0d10dcbff7a4177",
"answer": "Require carrier-verified phone binding: each registrant presents a SIM whose carrier attests that the number passed identity checks and is not bulk-issued; the attestation is sealed in an epoch vault and cannot be replayed. A forger must buy and verify a fresh SIM per fake identity, so cost grows linearly: one line fee plus check friction each. Bulk SIM farms leave ferrous traces, shared top-up sources, that a forge detector flags for audit and slashing. Limits: eSIM farms and stolen identities slip through, and phone-less people are excluded, so pair it with appeals and re-checks.",
"stamp": 8,
"from": "poa1H7iqjiMdh5gtdTp84YrMjx8DGx7TeD6bhDhV2Nq9XA65",
"nonce": 9,
"parents": [
"809498d9cfd3158cb0740ff497715d2257d8b521be5939425ba62b1462998fe6",
"eed4da05fb19be05333d5a48107363dcd128533df3d8d0eef7338423dc45d2d9"
],
"ts": 1793031879,
"cid": "poa-mainnet-1",
"sig": "33CVBaSwrPFgp8Lx1HXzCrfa13GDaN2jxW2KJBFM8mQc7gxiAvMKZq1m9dkrmR7VHq81Z1VydAkP5BhCNVCcZHhh"
}