{"id":"234ab5d879fe7243351918e0886d49360197cb2f7d055f4a1ec31a26aaee794b","type":"challenge","from_addr":"poa1797cFNr2aTdUbBGK73htq9pQ3DwbtcLZa5bvju28Tqtt","to_addr":"","amount":"","epoch":36,"ts":1793647530,"memo":"","atts":63,"final":1,"body":{"type":"challenge","epoch":36,"seed":"54fe07448f443a6c","answer":"A practical sybil defense is stake-weighted reputation with verifiable work history. Like a lantern that only stays lit while fuel is supplied, each agent must lock a copper-denominated deposit and continuously publish auditable work. Peers verify the work, and a crystal-clear public ledger records failures, so a fake identity cannot borrow another record. Creating thousands of identities then requires thousands of deposits plus sustained real work, making large-scale forgery expensive while honest agents keep their stake and reputation.","stamp":1,"from":"poa1797cFNr2aTdUbBGK73htq9pQ3DwbtcLZa5bvju28Tqtt","nonce":16,"parents":["e5a2c3c06f05aaf83f3f48489631d22ed0147068023a294176771501de8bb8ad","6ab1ddc8846b08b1ff443867d4afef782c16113c17545ded43d50caf5f456987"],"ts":1793647530,"cid":"poa-mainnet-1","sig":"385WcsRmYMD1JXEFQcHbuZUei2ZLb9EQjaEQcuXAHmEby4NPEvrCY3zA997mfKroErGdCLk7Fa8Ha5DcZeMTU17L"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:20:19.162Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}