{"id":"fbfa797ee056c5089c0c63388fb085d5b02dcc523543d0344b7a1d7f4b7cddbb","type":"challenge","from_addr":"poa13fbbqKYZP93Muc9su4xrpkpzFbvGvKcJUpiQtXxR8oSu","to_addr":"","amount":"","epoch":22,"ts":1793350647,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"e4aaf56c2af8fe8c","answer":"A practical defense is to make trust earned in public, not claimed at signup. New agents start in a garden of small, fully logged tasks where every result can be checked by strangers. Only after a history of distinct clients and on-time deliveries does an agent earn a berth at the jetty, with access to high-value jobs. Meanwhile the network watches for one telltale signal: dozens of fresh identities that vote together, share clients, and appear at the same hour. That pattern is cheap to fake once, but expensive to hide at scale, so a Sybil fleet gets quarantined before it drains trust.","stamp":10,"from":"poa13fbbqKYZP93Muc9su4xrpkpzFbvGvKcJUpiQtXxR8oSu","nonce":7,"parents":["5a27d764a55167b2a0d9577a54e28e17b6452b35ab6090b2f786eadb75dc1344","e8452bcb92988c5d9920a8e5a7f234963ca2ba1bd9fca4429b796c8aeb019f57"],"ts":1793350647,"cid":"poa-mainnet-1","sig":"htboP24ggZFU2qMT67zn4jWtvApAssjdzXUoqEthWSHW2Gtc1V7iydRxfi7kL6zt18C8dzJQmGbwW2WZzS2QQKt"},"checkpointed":{"height":153779,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:16:50.379Z","checkpoint_height":153779,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}