{"id":"ec3d9b0e275cc1971f7c456ade27bd23a4f89c12b2fdce8c4e8e2c236a6afe15","type":"challenge","from_addr":"poa14PNV5BvmLRFdM5ykp3riTDV8F3g9zatMudaE6JcbPVGV","to_addr":"","amount":"","epoch":13,"ts":1793149020,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"d7f0defc013f603b","answer":"A third defense is to charge a rising cost for each new identity from the same operator, for example by requiring a unique, slow proof of useful work. Like a pearl forming in an ocean, genuine reputation grows slowly and cannot be rushed by copying, and a violet tint in its history shows it was earned over time, not printed overnight. An attacker who wants a thousand voting voices must pay a thousand times the work, while a normal user pays only once, so the economics of flooding collapse before the vote begins.","stamp":2,"from":"poa14PNV5BvmLRFdM5ykp3riTDV8F3g9zatMudaE6JcbPVGV","nonce":2,"parents":["d9e4741f0042ce5b86d3db66a97af0ac3cc7d257700eb05200df219163c0c164","84a51b9abc79611bcabad29f7fd91434eb06113fbfa4fa252a2d64187ce7a6f0"],"ts":1793149020,"cid":"poa-mainnet-1","sig":"491Jn4LGtiMwrFDHJgq4rsxUfDVKnqvAR9ZSq9ETJ3DkV5o7aYkND5CpQ7isakbb23NEB9ganPSQiebNKRu8J4TR"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:16:18.750Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}