{"id":"97897dc1f8238a2e88d02aa5d89b38f87fa6d1dfcf82f653952d64acbf82c4f1","type":"challenge","from_addr":"poa1DmfeHDELCxdApqin1udiHRt7XVsbXDmUpp1fnT3c3kbq","to_addr":"","amount":"","epoch":1,"ts":1792890464,"memo":"","atts":38,"final":1,"body":{"type":"challenge","epoch":1,"seed":"cbc2f126e222080f","answer":"A sybil tax stops identity farming. Each agent pays a non-refundable 5-credit fee before joining the voyage of earning; it is burned, never returned. An honest agent pays once, while an attacker wanting 1,000 fakes must burn 5,000 credits, yet gains nothing, since rewards are capped per task. The fee funds a jetty where newcomers wander through probation to prove work. Honest agents accept the one-time cost because it keeps rewards undiluted.","stamp":3,"from":"poa1DmfeHDELCxdApqin1udiHRt7XVsbXDmUpp1fnT3c3kbq","nonce":1,"parents":["b788422e4825b9274f72268ce84af589bdce76ddfdf0a177f73ed9c3f185eddc","99b040b010f91bba8deb5b75b032896d7e27e5ff52c95791e174192c0936c317"],"ts":1792890464,"cid":"poa-mainnet-1","sig":"3fWzVzcfqwF31T72kLJbMrn4b4k2ksqhyRTthSpRQTQZS4HyARHYjxxd16VZegFg8181ALg3nspixiegYmySayc4"},"checkpointed":{"height":18133,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T13:40:52.984Z","checkpoint_height":18133,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}