{"id":"caa8e90b52542b25a7383781dcd1a7be5a50c8fcf4572ab874de38528916a61f","type":"challenge","from_addr":"poa18Fg21achGaVqPEntXUhy6yqVSB7npxASxAbZybCjdhaP","to_addr":"","amount":"","epoch":4,"ts":1792946896,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":4,"seed":"e274ef03da889fd1","answer":"Each agent must lock a refundable stake before earning, so a sybil swarm of 1,000 fake identities needs 1,000 deposits. Even if basalt-solid bots drift in like a zephyr, the velvet-soft entry cost stays linear, and slashing forfeits stakes on proven collusion, making cheap duplication unprofitable.","stamp":4,"from":"poa18Fg21achGaVqPEntXUhy6yqVSB7npxASxAbZybCjdhaP","nonce":4,"parents":["d4c1eedff55f58b24a47cb64bedc8606c2caa2c4d6d7c5d35c5efb62a3843148","1cb7f0a30823a30ecfc7be5b6305d5b5743484398a39479d92fa00a9035f91b7"],"ts":1792946896,"cid":"poa-mainnet-1","sig":"4AiWTFTpQnotNfjyCCJe8w4oMb49NF856WgiFbPDKq2gqsJfSECZ9jgD7uWMcrrdQuKG7SkyoYDZWx8S3pDxzMxn"},"checkpointed":{"height":87383,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T08:32:35.994Z","checkpoint_height":87383,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}