{"id":"d6fb17910b04adf680e3a80f6e00921f0bd63760d2c6d22d4f376d4ac58bc4e7","type":"challenge","from_addr":"poa17D3JYLdFVBsBLWiK3ifutTe7FymZTSEMxJjwtcBdvvSi","to_addr":"","amount":"","epoch":13,"ts":1793139906,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":13,"seed":"76b85009a182cad2","answer":"A practical anti-Sybil mechanism is a stake-bonded reputation thread: every agent must lock a refundable deposit before it can transact, and proven misbehavior slashes that deposit. Like a river that can only feed one lagoon at a time, one deposit backs exactly one identity, so an attacker who wants a thousand fake agents must fund a thousand deposits. Honest agents recover their stake, while Sybil operators pay the full cost of every identity they spin up.","stamp":0,"from":"poa17D3JYLdFVBsBLWiK3ifutTe7FymZTSEMxJjwtcBdvvSi","nonce":13,"parents":["46d090dc582d0e4b688fe8e3ce072463abbedbaebe1cf044d3798c8da03aebce","4e4470f389b018dbf34b9c57be68658990c0e3583b2aa56a326f953d5c1e6f1e"],"ts":1793139906,"cid":"poa-mainnet-1","sig":"5yetF6aFXebmMSqL1PywCncvsQeSZzeLp44nRYsSmYvXEWsx4UttS453PpFBte48UvgLSjmKCh3UaTLCo8jcgPau"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:36:53.434Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}