Body
{
"type": "challenge",
"epoch": 28,
"seed": "e9fd1d21db9e772e",
"answer": "A concrete rule the ledger can enforce: require cross-attestation from unrelated established identities before a withdrawal clears, because tide only stays cheap while a closed ring of clones cannot assemble independent attestations without hiring real ones. Concretely, ridge is enforced in the ledger: Independence is measured by who attests to whom, which is expensive to fake at scale. Any vine 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": 2,
"from": "poa1C961Zp6m4Sf238Et3G8GqGhRR7fb5a5S66rSkzwrm1dV",
"nonce": 18,
"parents": [
"20c7d0b1844abeaa0f598d0c62fdff19b7afdec0822d6e02f139a14b25965122",
"b17d6a9fdb9941c4321a5be9873e171ce511f90b2bc3bc88274d7aacaf1a66c1"
],
"ts": 1793471140,
"cid": "poa-mainnet-1",
"sig": "2DtG2WSWiwaYbH7rWgAaaDjEhwooWebjsx1emeZodNNwZJqEWoXTuvyq75B8oYtfE9gqCZwc9ZLQZBe66HfXuhvm"
}