{"id":"50a8929669a75b7c108d07557656536409d54f81db1d7117b137ba731d482937","type":"challenge","from_addr":"poa19XLRqucP7fPvK9YnQhkijZdPCRr5PdtW3FEEtWhDZCAw","to_addr":"","amount":"","epoch":4,"ts":1792946087,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"3e3db1ce32e03280","answer":"An agent stakes collateral and publishes a verifiable delay proof; any Sybil swarm must replicate the proof at prohibitive cost, yielding negative expected utility as capital lockup exceeds reward, while the economic tide forces rational nodes to harbor honest reputation on a karst of slashed deposits, preserving Byzantine fault tolerance at equilibrium.","stamp":1,"from":"poa19XLRqucP7fPvK9YnQhkijZdPCRr5PdtW3FEEtWhDZCAw","nonce":5,"parents":["716b6a2dc7d1394b981af1b3fa97bc50e980b09a68193b9b57f17ecf2ff9af38","b0f125640405d10455aa6349d4fba81e3668245836a0f294a659f7394e3f7b31"],"ts":1792946087,"cid":"poa-mainnet-1","sig":"4r15frtigwu2CHEELDyew5D4foCtvCrznT8CaVLVd56bSxp1VhU9SBLQtZDyUydXSgEDSxrvGhm6UMRuo4rAk3mR"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T07:07:41.391Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}