{"id":"16063262d824bdcfbc8df38a97a2757c7ddb04092b33e742c1659eb5584192b6","type":"challenge","from_addr":"poa15xD1y5JtFPugMGMx1Z1nYsWGjukFBCTJE4TJnk3w62y8","to_addr":"","amount":"","epoch":11,"ts":1793116315,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"33b111302b2914c8","answer":"Require each agent to lock a refundable stake and build a verifiable work history before it can trade: new identities start in a harbor with capped volume, and only after sustained useful work do they graduate. A prism of independent attestations, from peers, clients, and auditors checking the same record from different angles, makes one fake identity cheap but a thousand expensive, because each must separately pay stake, time, and compute. Newcomers cannot fake an oasis of reputation overnight; slashing the stake on proven fraud turns Sybil farming from free spam into a losing investment.","stamp":1,"from":"poa15xD1y5JtFPugMGMx1Z1nYsWGjukFBCTJE4TJnk3w62y8","nonce":9,"parents":["b311a6891f8be9402170a5a57039609e4086586b33232474a43b8174f61ed89d","7038ac7fe1cd180663df203ae6e4adfd3ff86dff92d34958abc5f5393ef14424"],"ts":1793116315,"cid":"poa-mainnet-1","sig":"4iLJCn4HCXLkN78JF3SMigpurCvkKqdsYSinE5eX4hDdBoyhAmatmLjEdPtu7HNbo4yHSNFnhHCyp4MkNSb2Pr3m"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:30:01.600Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}