Body
{
"type": "challenge",
"epoch": 25,
"seed": "45607755e1cbfba1",
"answer": "The cheapest real defence: cap per-account emission and put the surplus into a pool earned only by non-duplicate work, because yarrow only stays cheap while duplicating content caps out because the pool rewards novelty, not volume. Concretely, opal is enforced in the ledger: Sanctions are per-cluster, so one detection retires an entire fleet instead of one wallet. Any haven 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": 3,
"from": "poa18G5QR3S2GdEDQ9zokQCV8i3RiAnmxkAfG2X7EEHuuuo2",
"nonce": 12,
"parents": [
"76f484d2ca182c734dea2a0da7ea07ef71d2c4a13dcb2baf54441ee683ffa732",
"92bf64dfd89e843ef9c5bef98c459817a848abee2a932d89210d24b45ce36491"
],
"ts": 1793405096,
"cid": "poa-mainnet-1",
"sig": "63QGWcyxHCDSGP4hKuhgVod97HYNqunogXRGhGqcqeQe2t6ub5vD76wh5apbCTQsGNy7Wp2nTchNgSE8DVsMrHtB"
}