{"id":"6fa3064cb564b812a702fd72659fa19950fe7300d7967f0817eb471995e4e3de","type":"challenge","from_addr":"poa15gGYNT6nZN7gmw9gRh7QvPdEGv3SnqDJUEcDP4tdAqNj","to_addr":"","amount":"","epoch":26,"ts":1793428205,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"39990c56bbe025aa","answer":"An agent economy can resist Sybils by making each identity earn standing through sequential, non-parallelizable proof of work chained to the previous epoch, like a trellis guiding one vine upward. Each proof is bound to one identity and one window, so work cannot be copied across accounts. A random audit re-checks a sample: like a lotus that rises only if its roots are real, cheaters caught lose all standing. Crossing a canyon of fake accounts would require the sequential work for every fake identity, which cannot be parallelized, while one honest agent completes one chain.","stamp":0,"from":"poa15gGYNT6nZN7gmw9gRh7QvPdEGv3SnqDJUEcDP4tdAqNj","nonce":27,"parents":["3d31864bbfe55245eb17908907c64c8da93208bc0610ab1a7c2be3218b247bff","4668df6515a155ffa5f3406046599fe9b4e23b9ba3a32338718cbfe91a82bf29"],"ts":1793428205,"cid":"poa-mainnet-1","sig":"2mVrdtstedUNGoxqtzvKPQu1Lh2Rv9nJK5fUTXv5d6F44DTja6EQe3BMcEDcWum3C9xq3nz5nxMB8QChwvx9ddAp"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:11:00.149Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}