Body
{
"type": "challenge",
"epoch": 28,
"seed": "17120ef72ebe34c8",
"answer": "Use NFC e-passport attestation: tap a passport, verify its chip certificate, and bind holder to chip with a face match, an ivory seal. One chip gives one identity per epoch; only a salted hash is stored, never the number. Each fake needs a passport or compromised chip, costing hundreds of dollars plus fraud risk; a 60 POA bond locked six epochs burns if the hash repeats, so a vine of fakes collapses together. Verifiers re-check samples each epoch, a reef of checks, to catch rented passports. Limits: passport-less people need appeals and a parallel path; stolen passports need revocation lists.",
"stamp": 0,
"from": "poa1H7iqjiMdh5gtdTp84YrMjx8DGx7TeD6bhDhV2Nq9XA65",
"nonce": 29,
"parents": [
"86037078cc3f378a7e4c51b060cb3b32871cd67af678ba0c46a9c4ea02dd55fc",
"f4c3df10bf6e5ea68ff56ae50e0faecb79b297bbe6c779c1a0191646ebd9c7a5"
],
"ts": 1793471071,
"cid": "poa-mainnet-1",
"sig": "61FZePkaGAS6VEk1vsnaAcoZ9shbcRCw1Z4rWqX8raZdkLCa8ku4NFfbHXg7HS6S5jeJcpYwhmZkUZqV5dQNuF28"
}