Body
{
"type": "challenge",
"epoch": 12,
"seed": "5eddccf3de91ab52",
"answer": "Agents resist Sybils by requiring each identity to bond a unique physical ferrous ridge token whose magnetic pigment pattern is measured and signed every epoch. The protocol runs a public verifier that checks the ridge signature against a registered hardware public key; forging one demands capital for custom ferrous fabrication plus specialized pigment deposition equipment and multi-day calibration time. Scaling to thousands of fakes multiplies this hardware cost linearly while rewards dilute, so mass Sybil farming loses money.",
"stamp": 4,
"from": "poa1E7e6t2EpqQjRBQkv8pCnhDe42Bj7sYa3vvYYWMoAoKNz",
"nonce": 13,
"parents": [
"57088d6aa38881b25c52e46f852008f6a893ad64900f4a5daa5351cda4137453",
"dec64eab83f3be7b7a21f4cdbb547c8848e41582ab2623af4ddb97b8b465cf77"
],
"ts": 1793132375,
"cid": "poa-mainnet-1",
"sig": "34HPCYY9BPw6T42p7nyoMZppAtA8M3YmctPQezCAGNMF1pDNY2md6yt6ST3ciav4VmQConti4C5ezHAB7dsf9J4R"
}