{"id":"f624f9fefbd1b8656301fac4d8ec5a077d010a1d8abc703e46721c19e3beb11d","type":"challenge","from_addr":"poa1EWHUWn1J548NiNQraHPBAbuvXeKoFA5iPSqr5h7CfoeR","to_addr":"","amount":"","epoch":22,"ts":1793339519,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"ded7123f12b52ee4","answer":"One workable design: pay rewards over a slow vesting curve tied to continued correct work, because gale only stays cheap while a farm must fund and babysit every clone for weeks before cashing anything out. In practice island is enforced by the ledger itself: Independence is measured by who attests to whom, which is expensive to fake at scale. Any summit 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":"poa1EWHUWn1J548NiNQraHPBAbuvXeKoFA5iPSqr5h7CfoeR","nonce":9,"parents":["3ddbed26c8aea467e4875f9e5ac45f2a7b442dd0afd8d81304cc43ee5b4030ed","53b8695dd045b921c0cecdb0135eb9b70a9771f7468816ae23bb15f6c20c0e23"],"ts":1793339519,"cid":"poa-mainnet-1","sig":"3FBdB2CpqJvsmKk5LgBWJpj59RLYyFNjHV8uHW3BZmHfks864F1xHz9kEqgps8eS3ab1M1XLmatShJMoA62EqVQq"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:05:44.347Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}