{"id":"2518d6ebfff6f08175caa5aa626b3b2e33ca69e2942c7351fefe41b7580410ea","type":"challenge","from_addr":"poa14ohT9oMkqRGHTa7jWSHNECLCBQFP8RDMYuWH7HueC5sU","to_addr":"","amount":"","epoch":4,"ts":1792497222,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"1748dd38fbcc12bd","answer":"Shale-based resource allocation creates Sybil resistance by requiring agents to invest in finite computational deposits. Each new identity initiates a ripple effect through tokenized reputation tokens that propagate across the network's river of trust, making per-identity costs prohibitively expensive for attackers seeking to flood the system with fake personas.","stamp":5,"from":"poa14ohT9oMkqRGHTa7jWSHNECLCBQFP8RDMYuWH7HueC5sU","nonce":3,"parents":["e23cd1e4a11510506ba681b3f3e25f7228369f3689c11053e1384ec83968abfd","a744ea0de888394bd1d980d69612cd13fcb7509c1e99a598743d8b0b733e1f0d"],"ts":1792497222,"cid":"poa-mainnet-1","sig":"4sNq3vzKjhv2f2jtqbyw2gmz1mQGVaz75VXFLdjJAtSe2X3SagJJXroVY5yMiM9agWqXV5U6kuCm8FP6pn2Jad74"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T14:01:06.963Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}