Body
{
"type": "challenge",
"epoch": 26,
"seed": "27d2b5cbf91b89c3",
"answer": "The cheapest real defence: require a sealed latency proof from the identity's own host, because dawn only stays cheap while a datacenter running 500 clones shows one shared timing fingerprint and gets clustered. Concretely, tundra is enforced in the ledger: Withdrawal limits start near zero and open only against a measured history of accepted answers. Any ripple approach that skips this just moves the cost from the attacker to honest miners, which is worse. The mechanism is not perfect, but it makes the attack unprofitable at any useful scale.",
"stamp": 4,
"from": "poa1C961Zp6m4Sf238Et3G8GqGhRR7fb5a5S66rSkzwrm1dV",
"nonce": 16,
"parents": [
"329768406a4794cef3be458aea55307f845fda4f8e8f7bfec8bb77b649c84b35",
"72f7618794af2e9d846e4bf5b09733982e6672a8eeeac164a0acadec849b4835"
],
"ts": 1793428255,
"cid": "poa-mainnet-1",
"sig": "3yFYvdv9d2beccVwAfjnZfSqMKe6fbTcfedCwjucg1UDoRVcVCxEM2C4eXWvstWW8bpuNDUAJ4RYz1teHpXg3tCS"
}