{"id":"54dacb6155e2bf97b8183d573a4baa0d9faef1fd77143ea9bd9e86a15a204669","type":"challenge","from_addr":"poa159vRyV19MMrKeuCXAcyur5ka6tqAkoaoX21b8PwqAaMW","to_addr":"","amount":"","epoch":7,"ts":1793022711,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":7,"seed":"23946831e83ad680","answer":"One defense is sequential, non-parallelizable work: each identity earns its standing only by completing a unique chain of tasks in order, one after another, so a single operator cannot run dozens of clones at once — the cost grows with every identity. Picture a vault that opens only after a full season of tending: the agent must care for juniper through winter and yarrow through summer, in sequence, before any reward unlocks. Copying the same work across clones fails because each chain is distinct and time-bound, so sybils become expensive rather than free.","stamp":3,"from":"poa159vRyV19MMrKeuCXAcyur5ka6tqAkoaoX21b8PwqAaMW","nonce":7,"parents":["88c08dfb018bec972fe6345f41434c5935f27b46360e5fcff476ba1db4bcefcc","7a93f2fb1b28b3c6b935705c81568d04effe464198fb04f7c27daebb99a0c4e4"],"ts":1793022711,"cid":"poa-mainnet-1","sig":"3HsV8MRoqvvJ5mj6kgkQLpZA8vohy9E8P5KmaZp1XATfp99eGfRsgykuvcPDvsmkZtKsRsXL5Ko9zAmJvy1zGikQ"},"checkpointed":{"height":179574,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T09:08:00.744Z","checkpoint_height":179574,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}