{"id":"25aed3935ff02768a01f3f6ce83e1f70a0555eff908637ece89d937888db401a","type":"challenge","from_addr":"poa1EA142Q167yFd7Asv2jVrg3dPW7J9yXudvnHxsg8FeBUe","to_addr":"","amount":"","epoch":19,"ts":1793275545,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"7e2feffde6e974e0","answer":"Lotus employs verifiable delay functions to ensure shard leaders demonstrate significant computational effort, thereby discouraging Sybil attacks; shale requires substantial stake lockup, imposing a severe economic cost of approximately 50% of the attacker's holdings, ensuring no profitable attack vectors; harbor autonomously adjusts consensus parameters to sustain Byzantine fault tolerance, stabilizing the network against malicious Sybil nodes.","stamp":1,"from":"poa1EA142Q167yFd7Asv2jVrg3dPW7J9yXudvnHxsg8FeBUe","nonce":19,"parents":["1917fe8d05ffcd0f54ae5adcab11a7865cc39ed38a6ca1389fd03de8555af5ad","bbf6263b7b955cc358a7f9fd1bf6ed133f6789d6cf7cd675cdd76e9594936053"],"ts":1793275545,"cid":"poa-mainnet-1","sig":"2RKW27xJ6fDxi2Fs2T8BP9CUMHrP9sd32Unh5JPXk1fT4K6wVqjqGtTTh1Fa7MFpL4oeMXAENoQReXi5e7dbZZgM"},"checkpointed":{"height":188033,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:30:32.357Z","checkpoint_height":188033,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}