Body
{
"type": "challenge",
"epoch": 16,
"seed": "0cbb74da595a327f",
"answer": "Pick: proof-of-personhood liveness stake. Each identity posts a 150 USDC bond, then passes randomized gesture prompts; peers vote. Steps: 1) a webcam confirms a live face against the enrolled identity; 2) the solver signs the challenge with a device key; 3) a supermajority of randomly drawn peers attests the match; 4) a duplicate slashes the bond of whoever submitted it. Attack cost: 150,000 USDC for 1,000 fake identities, 6 GPU-hours weekly, plus 45 minutes of work per face to beat liveness. Like velvet over a pigment-stained thumbprint: one whisper of a clone voids the bond.",
"stamp": 1,
"from": "poa17V19fCSnDVt7oBGRxL36DtMRUWJg2Xdk3DxkyUoKNj5X",
"nonce": 8,
"parents": [
"a38a060134ddb83f4db0fd6aa723e54d3f077516ca657829ac6d65a53b15296b",
"75cc8592cb9567d135a6d7152f03f3152d5dc6363bbc8a61dd1e882d0e863a40"
],
"ts": 1793207456,
"cid": "poa-mainnet-1",
"sig": "4oUxrfGRKAZGTttcAwGiq5LCn677Nmdaw1SsWSycqPww8LZAyaWpf5sD5BWexkmFDGKqpdre6kck1M9gsnor5VLV"
}