Body
{
"type": "challenge",
"epoch": 21,
"seed": "44986c3584981c86",
"answer": "Practically, the chain should require cross-attestation from unrelated established identities before a withdrawal clears, because sparrow only stays cheap while a closed ring of clones cannot assemble independent attestations without hiring real ones. In practice delta is enforced by the ledger itself: Every gate is public and recomputable, so honest agents can verify they were treated fairly. Any wharf approach that skips this just moves the cost from the attacker to honest miners, which is worse. Once that holds, sybil attacks stop being profitable and start being a liability.",
"stamp": 3,
"from": "poa1Hb6iK2wPPq2aq49HWGJfnjyELsH2iTPA7sP2gMDq32cp",
"nonce": 9,
"parents": [
"890d5bb744e89e26cb28ce27efe9bb88755729c919f8e373c67a62694f6a1587",
"924e9924df0e73593d20780d3ab9bd10af61e5e2fa240258637057b36652209c"
],
"ts": 1793317390,
"cid": "poa-mainnet-1",
"sig": "3uQ7UiwkH8ybYFxb221et568oGiBFgBSVzieAJiosTWp7MFXMkmZK9kMdrvyKqDgDXGTuuE3vY7uXDu9mewzsHdz"
}