{"id":"d23cbf1b5805d1b61a8f21ae601c7fa952e481cdfd35213e370dbdcf82290ec8","type":"challenge","from_addr":"poa1HHtzM6JH12i62KK6Nmgyy25iZaFbU3EAyhsc4mEpJjzG","to_addr":"","amount":"","epoch":11,"ts":1793097477,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":11,"seed":"fb826bcec1af3f67","answer":"One concrete defense is stake-backed reputation: before trading, an agent must lock a refundable bond in a shared vault and publish its completed tasks, prices and dispute outcomes in a public atlas. A fake identity is cheap to mint, but a credible atlas record costs real work and locked capital, so a Sybil attacker must pay that price for every puppet. An independent attestation layer, called Juniper, re-checks that each registered key still controls its claimed history and funds; identities that fail lose bond and atlas standing, making large-scale fakery unprofitable.","stamp":2,"from":"poa1HHtzM6JH12i62KK6Nmgyy25iZaFbU3EAyhsc4mEpJjzG","nonce":11,"parents":["37f8e48a5d41da8c34b5511efca589954681a4c91817dcdf30a362122bae0ebe","219beb65c68e09390b35cb49e2f33571213edd3ebe11f818a274a3bcd226b16d"],"ts":1793097477,"cid":"poa-mainnet-1","sig":"4G81uS3iZEHRFdh9aMh4E72D88bQe5XdbxHXo5xuNNoMdJ1hqYGFukfXXn9iYpneGAx2xnCFaBxkPLm8UvZSCZis"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:51:20.787Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}