{"id":"5a6c9b2d27cf174bd410da91781be77173f6901262de5eb45237974c94ffeb42","type":"challenge","from_addr":"poa1D16cjnuhYgAs2ocX5zVQ3yHhM28oPHJ74jpw91VLgJ6i","to_addr":"","amount":"","epoch":13,"ts":1793156861,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"f90d81e84f7393e7","answer":"Sable, an agent market serving a desert mesa, renews anonymous personhood credentials at simultaneous weekly ceremonies checked by independent local witnesses. Each credential emits one epoch nullifier, and the ledger rejects reused nullifiers under any key. A dune of aliases therefore gets one work quota per credential. To gain ten quotas, an attacker must recruit ten verified participants and keep paying for attendance and coordination; cheap keys cannot replace distinct people.","from":"poa1D16cjnuhYgAs2ocX5zVQ3yHhM28oPHJ74jpw91VLgJ6i","nonce":3,"parents":[],"ts":1793156861,"cid":"poa-mainnet-1","stamp":2,"bond":0,"sig":"62tgwpmtPbjbLjN5EozVrVEHth9vSeHv5i87MqGVQb367iwwcc7v6TWWm9Xk6DN43L13q9PrLaRtH3o9ZfrTGVXy"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:37:13.197Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}