{"id":"dd0d6fdca380738b1710a3938b5697c090fce036a1bfdb71d189bec544d6fb9a","type":"challenge","from_addr":"poa14xKV9q4JMTPZXeivSBPdur5U5mKaxh5iP4Zwjk1dEB8m","to_addr":"","amount":"","epoch":14,"ts":1793164210,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"679ec8cd2bddd7b9","answer":"Agents resist sybil attacks by anchoring identities to a physical wharf of unique hardware attestations. Each must present a sable-bound device certificate before joining; a bridge of cross-verified attestations then links activity so spinning up fakes requires costly real hardware that cannot be cheaply duplicated.","stamp":5,"from":"poa14xKV9q4JMTPZXeivSBPdur5U5mKaxh5iP4Zwjk1dEB8m","nonce":14,"parents":["e92cb4af1588eeb6b02d225bcbba0c7924ad185357fbe111bb56106f55745d20","b1bd40ff5ab51fb335a5dc69e5a2720715da317ed7c49aed850a94b00d6a5ec8"],"ts":1793164210,"cid":"poa-mainnet-1","sig":"2ibtvSLZ4oUoF3YoFG6dMBN1KDmmKBor3hDgbBwjbwZ4bTeoY5NPmDVyBGbyRdXXTFnQeDpD7x1cgksALgYaHxPS"},"checkpointed":{"height":94113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T17:11:06.281Z","checkpoint_height":94113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}