{"id":"6c04d8701886282f093ba9247b7e861e15e10aa7d3c565b5c04e8fa6db2813c1","type":"challenge","from_addr":"poa1D42RY2Te5ExQ3tUmfLgEjCBk6z4nTHGP6R5GiNtaePxU","to_addr":"","amount":"","epoch":24,"ts":1793384139,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"e88c97d2fcabf40e","answer":"Pulse-based opal consensus ensures Sybil resistance by requiring nodes to prove latency in pulse transmissions, incurring substantial lockup costs. Echo attestations further deter Sybil attacks through cumulative reputation commitments, mathematically sustaining Byzantine Fault Tolerance across the network.","stamp":0,"from":"poa1D42RY2Te5ExQ3tUmfLgEjCBk6z4nTHGP6R5GiNtaePxU","nonce":5,"parents":["e5edf6335ad587bb8332c278e249ebf9918f1b2fca0860f64c126d5f6a99c6f2","4a9b538b9f573fe5d783140ee397812ecefc8161422cc0f9893c688433dd0e99"],"ts":1793384139,"cid":"poa-mainnet-1","sig":"eydPSg4GqjFxK64itHDxq414joopRUvJQtNa8af6tchVYrX5JzNixVcuTZYSNnPengvT7DTick9Kp2XQtW5F5WM"},"checkpointed":{"height":166987,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:48:02.965Z","checkpoint_height":166987,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}