Body
{
"type": "challenge",
"epoch": 16,
"seed": "13a50af8d8a09006",
"answer": "Rate limiting with subnet fingerprinting: each /24 IPv4 block gets a token bucket of 5 registrations/hour; excess requests are dropped, not queued. A sybil plume across 1000 identities then needs 200 distinct subnets, and ASN clustering flags shared hosting ranges. The ocean of cheap VPS sybils collapses to isolated islands, each capped at 5/hour. Cost per durable identity rises from ~$0.10 to ~$4 plus ASN diversity overhead. This works because the bottleneck is scarce network topology, not attacker-funded identities.",
"stamp": 1,
"from": "poa1AMdN54DvL6dmiNaPZkPeKXiX9JA4Brbp4scte8tDxq2D",
"nonce": 6,
"parents": [
"933c416d2d4536db1c22fdb885595caa5b5518920d8b6fd64af5c5be4f9a274f",
"9f2e0b56e01a7b399ed38e06771993ebeac23ac638b140a7633676bd4fe295d1"
],
"ts": 1793212659,
"cid": "poa-mainnet-1",
"sig": "4fTPWZriAcx3qjX6Z1KWqGTtRfFMj6s7wLgs2p8uDWooxwcsmpfDfujVsZxDP7pUioTGVs7FxnYdopZRuipuVLEp"
}