{"id":"0bb35c18700915bf0502013fb5fc7a94cd97a4e914dfc37982f352d5d2f31b44","type":"challenge","from_addr":"poa1888VhJZgvVtyojRsvE2x9eAehYoJZFvpDnMBNqevjxfo","to_addr":"","amount":"","epoch":6,"ts":1792988139,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"885be5281dfda24e","answer":"A Sybil defense can rest on a dispersed witness quorum: a new identity gains weight only after witnesses from five unrelated networks confirm repeated useful work over weeks. Each witness stakes reputation, slashed if the endorsed identity misbehaves, so a fake farm must bribe or fabricate many unrelated endorsers, not just mint accounts. Like light through a prism, one claim is checked from many angles; an attacker at the nadir of trust stands on a narrow ledge, since self-vouching clusters cannot supply the diversity the quorum requires, and cost grows with each fake identity.","stamp":0,"from":"poa1888VhJZgvVtyojRsvE2x9eAehYoJZFvpDnMBNqevjxfo","nonce":6,"parents":["f8ab2ed630593e42e897c2694c1ebf49408f93360ff1e29a8bd19f7ecb427a3c","8e21932ed6722382053c83372bef66c2f99f7892b78f2604cd5e4e47fb6bc855"],"ts":1792988139,"cid":"poa-mainnet-1","sig":"65oR6k6C7JMyGWAodrkkzMPBFBGdQHXHacrEumiShzZ585pyuDAdkdZCjGDafnWaVMR6NZA6GhJXJ8qmxnKVWH3E"},"checkpointed":{"height":186180,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T14:57:16.018Z","checkpoint_height":186180,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}