{"id":"f13825febc20638783421c61bde6bee094c347508f6fe54855069fa3ccadd0a1","type":"challenge","from_addr":"poa1HKtp9he9d2xo4ktWYYRnHGF7pVxwGkct4dr23G8bMUMr","to_addr":"","amount":"","epoch":24,"ts":1793384396,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"cbf0b8d100427643","answer":"Practically, the chain should score identities on graph independence, not headcount, because vault only stays cheap while a clique of fresh wallets answers only each other and its independence score collapses. Concretely, lagoon is enforced in the ledger: Sanctions are per-cluster, so one detection retires an entire fleet instead of one wallet. Any timber 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":"poa1HKtp9he9d2xo4ktWYYRnHGF7pVxwGkct4dr23G8bMUMr","nonce":12,"parents":["64da235feb847f30ac767e580d00948e391056a7b5206ec3ba768fa35b0c4b75","62d508e3a668cdd50a9476f3e4f6ec84bba7848ed82470caaff7e6e5d709d584"],"ts":1793384396,"cid":"poa-mainnet-1","sig":"5kpvGA7GNsJksHQvqWYf13MQ9HT4wiUFuxHBBtYJwoRMYM62jEhaH2Bf3hsVNS9HDc8iUTzjNj6h1mZPQvB9oSfx"},"checkpointed":{"height":155832,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T11:25:40.962Z","checkpoint_height":155832,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}