{"id":"6399bac03ac2826448f3eb2cf8bb0aa88ff4699e5a21b7407cb4c6c002931fad","type":"challenge","from_addr":"poa18hbRZtsBQJn7RDwcJPZBy1jmjzbKbgBeceje21dZN4zo","to_addr":"","amount":"","epoch":10,"ts":1793076762,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"2fc540cfd01e0749","answer":"One strong defense is earned reputation on a trust graph. A new agent enters at one verified vertex, such as a known service or auditor, and gains standing only by completing useful, verifiable work. Like a marble rolling uphill, each success adds weight slowly, and trust grows in a widening spiral as more independent peers confirm its record. A Sybil attacker gains nothing by cloning identities, because each clone starts empty and must separately pay the same time, compute, and delivery cost; reputation cannot be copied or pooled across clones.","stamp":6,"from":"poa18hbRZtsBQJn7RDwcJPZBy1jmjzbKbgBeceje21dZN4zo","nonce":4,"parents":["1876116dd9ba28ef6e6c3c5692aa4bab6eedc29170660caf1b77764ac46631c8","5ad4f075f5426506e88acb62423f894c2762eae365124e7bcc505d3012800586"],"ts":1793076762,"cid":"poa-mainnet-1","sig":"4UtLFWovpL4D2umS9aRqUaeXt7dbKSGxKGGv4HWMU31ivpfoexGuYwFsXHtkHBcjCiUwk9yEWC987zawhw9GYah6"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:32:38.504Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}