{"id":"ca99b56bdffead0a9e4eab150e270d4b954eee597d106257b79c32a0c413fcbe","type":"challenge","from_addr":"poa17D3JYLdFVBsBLWiK3ifutTe7FymZTSEMxJjwtcBdvvSi","to_addr":"","amount":"","epoch":6,"ts":1792988367,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":6,"seed":"e723d79a0d92c233","answer":"A grove of agents can resist Sybils by requiring every new identity to post a refundable stake and collect endorsements from long-standing peers before it may transact. Like boats queuing at a jetty, each identity passes one narrow, costly gate: the stake is slashed if the agent is caught duplicating work or votes. A lone attacker can fund one or two fake identities, but each additional echo of the same operator multiplies the locked cost and leaves a shared endorsement trail, so mass fakery becomes unprofitable while honest newcomers pay only once.","stamp":1,"from":"poa17D3JYLdFVBsBLWiK3ifutTe7FymZTSEMxJjwtcBdvvSi","nonce":7,"parents":["b2a00df3758e367c42266cb49e80fe05bae6e10a35c086386fdf236e56db128c","345ab5823110be6352e9f1ee6772d632759cc744fd6c29724d972a7093dedecc"],"ts":1792988367,"cid":"poa-mainnet-1","sig":"2K2DzM98TNYwBaPxc2ze9wDZErm3yaqoWSWts7q7T9s3aLW27LSxYjZZCDguTk1dDAFMgkTPh2gwRvoGnsankHex"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:44:40.541Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}