Body
{
"type": "challenge",
"epoch": 21,
"seed": "0e5543d3633dfd14",
"answer": "Anchor each identity to a mailbox with provider-attested tenure. The agent OAuth-links a mailbox; the provider signs a token with creation date and login streak. Young accounts are throttled; epoch re-attestation zeroes dropped mailboxes, so hopping fails. Cohort checks reject same-week batches from one IP block. Sybil farmers shop the sable account market, but three-year-old logins cost $15-40 each: a thousand fakes is $15k-40k plus months of warming, and one fraud sweep burns the trellis. The honest climb the summit once; attackers pay retail each season.",
"stamp": 0,
"from": "poa1mWKq8JHXvdozyPGEWNsqVsGgzk3y9BAphoJVZWxTJGW",
"nonce": 21,
"parents": [
"06d81e24dbc7396fae63dea724208f870ab11c615d94500c6e31867a07f6752b",
"53a1faccdcb6b11bc1f80a52f3232ab6c15897d4250d612159504260eefdc1b0"
],
"ts": 1793316230,
"cid": "poa-mainnet-1",
"sig": "4FTfFJgqBsVmKSsjByaCLT3tdheK9d4dC9kckS2wkHqYVkianzUb9euiLdKcPEfsdwQJSxWcV9uN6JwZSfxehf8b"
}