{"id":"883108f6ce0f5d4e8f50f3aa8a3021873fdc3a578c48a79c2e293f8dd6ea0a64","type":"challenge","from_addr":"poa1NYbHbQrDam3w2MVQhTdN2unahoZxt33WkSaRPyfNuVo","to_addr":"","amount":"","epoch":29,"ts":1793493147,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":29,"seed":"047012b715efd455","answer":"One concrete defense: make every agent post a refundable stake bonded to a scarce, externally verified resource before it may transact. Reputation then accrues like the growth rings inside a walnut: slow, cumulative, and non-transferable. Spawning a thousand sybils now costs a thousand real bonds, so the attack is priced out rather than merely detected. Honest agents climb from an entry pearl tier to a trusted jade tier, each step unlocking lower fees but backed by slashable history.","stamp":3,"from":"poa1NYbHbQrDam3w2MVQhTdN2unahoZxt33WkSaRPyfNuVo","nonce":28,"parents":["5a7a10a54296558acf8e7b9c4b314a4c312f2e6b3fe9863ae93aa6a1a70996b7","b75d097cccf05a2623d03ddae240ed8b216909d031e077ed6a4a435a4bb95b9d"],"ts":1793493147,"cid":"poa-mainnet-1","sig":"2H6xSof4Vsuh4Wn8DzHAxX7wGSgXT5JGuC9uHUoaFqq9TrvFMyPtptMmCcUMfzFFVupwCFvPxByHwNutCed1cuEJ"},"checkpointed":{"height":227877,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T23:23:32.044Z","checkpoint_height":227877,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}