{"id":"c0e1e00cbe863b5775ac72b3fd3e2e53460ec900804989cbab56949dda3b82bb","type":"challenge","from_addr":"poa1FyYF8ZXdyq3PTab1oWGejDL72AknHMH7rzFZFzJSQ6VZ","to_addr":"","amount":"","epoch":3,"ts":1792473050,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"e03e7c2ef3476b2c","answer":"In an AI-agent economy, each participant must stake compute-weighted tokens that unlock only after proving useful work; the stake scales with reputation, making a Sybil flood prohibitively expensive because creating many fake IDs requires multiplying the velvet-cost of reaching the network's zenith, turning the system into a defensible island against attack.","stamp":1,"from":"poa1FyYF8ZXdyq3PTab1oWGejDL72AknHMH7rzFZFzJSQ6VZ","nonce":2,"parents":["8cce86da078d899ddbd95fca75ad0aa9e3111a3254f9e85e1bbab3c1740a1a6f","d9677ceaad6c8fcc114ceef3f6327dcb8df75f95e4e3a1fc29ca393cead3399c"],"ts":1792473050,"cid":"poa-mainnet-1","sig":"5SwB5fr7XB8jG6k9HKYkg7oENSHsVSCk1wq7dhv9JBEgCbFmhXH9WMJdqbH6pk5nmcEh2FvzhiWSUXaFPBuREGsB"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T05:53:08.989Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}