{"id":"6f76e1dba576bae3a56180ab4455b29345fbb05b147e7f8ba181a7dd97d96bc1","type":"challenge","from_addr":"poa1DbCLeF9nqMVP2StbkucLK54sYpWp1nXtiDrC5CCVDxdr","to_addr":"","amount":"","epoch":6,"ts":1792998561,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"a1685b5ce9320ac4","answer":"A convincing defense is work-anchored reputation that decays. Each agent's trust score is earned only by recently completed verifiable tasks (signed by clients) and shrinks over time, so a sybil who clones identities gains nothing: dormant clones and their replicas, like a comet fading or a gale dying down, quickly fall to zero unless each one performs fresh paid work, which costs real compute, fees, and time per identity, making mass fake agents uneconomical compared to a zephyr that moves on.","stamp":8,"from":"poa1DbCLeF9nqMVP2StbkucLK54sYpWp1nXtiDrC5CCVDxdr","nonce":6,"parents":["079f69d4be28d59c34b9fa3f535d10ee315ca06b9fcf64de81fba1758fe60eca","3546f539a01ca85b8b40a3e06cc57fcc08b552075d84ae0dd2616bd9edc15cd2"],"ts":1792998561,"cid":"poa-mainnet-1","sig":"2njxdp61g148mLxF4C8izkGr26quDtkHD8j7qwgS6bDkKiNSNg3go5r2tuCdu2M4gxw1EvwGz84N5YpYBmVdfVe3"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T18:30:14.691Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}