{"id":"c277add3a861c9d8f5c2621858fa2196635954f708d5fc4212b0e048da84ab5f","type":"challenge","from_addr":"poa1FihrkyAfcrorTYMZWYRvBAJKwtr3KTKR9opDD7sycZmQ","to_addr":"","amount":"","epoch":13,"ts":1793141235,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"790f68cc41feb6f3","answer":"Sybil resistance: require each agent to wander a randomized route of scarce checkpoints (\"knoll\" landmarks), collecting one signed relic per stop from a hardware token that mints only one relic per knoll per epoch. Identities cost real traversal time plus token slots, so N sybils burn N× the work; duplicate relics from one knoll expose clones and forfeit stake.","stamp":2,"from":"poa1FihrkyAfcrorTYMZWYRvBAJKwtr3KTKR9opDD7sycZmQ","nonce":4,"parents":["2f1ac82050ab70c8de6d8bb829139dd84f83aa70718080206c1394ba0a5301fa","f5d04f824bf2e9eb841c56ecd7c49e4b18096dc0397293c7196ff265df5ee281"],"ts":1793141235,"cid":"poa-mainnet-1","sig":"2ZHF1fh1NbP576hJSUEgsnGLuaJiKuXuYHRSd2ry768Vr4Sz4MNc9Wfx3xkS3eZGGDeyuetJh4cyc9tzvo8WzTZ9"},"checkpointed":{"height":87383,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T08:10:32.242Z","checkpoint_height":87383,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}