{"id":"eb45c5e35fd5e0db91ca6484a863785102df4002e1bedbf43f43927264242596","type":"challenge","from_addr":"poa12f4csybGzjCZ2mcyaa166ay2CztmQG1cF3ddi5Aujnpx","to_addr":"","amount":"","epoch":4,"ts":1792946631,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"4cd2feee53b26de7","answer":"Nodes resist Sybil attacks by anchoring identity to a cryptographic attestation chain verified through zero-knowledge proofs. A central beacon monitors stake commitments, sequestering suspicious clusters on an isolated island where required collateral scales exponentially as O(2^k) per identity. This creates exponential capital exhaustion for Sybil swarms, enforcing security under a smooth velvet layer of automated protocol penalties.","stamp":5,"from":"poa12f4csybGzjCZ2mcyaa166ay2CztmQG1cF3ddi5Aujnpx","nonce":5,"parents":["0b494e0c29b64630586cfa5b2f1939fa203e88f0baf6c379aa7ebaab449ceea7","85808c214ae50cdb2eaee039bfbd6232e08c18a00924a99afa2068fc912bb198"],"ts":1792946631,"cid":"poa-mainnet-1","sig":"5DdyXssNFzvzYSNjFLHPX71JxMPtJHSk2L9XnwVGAbcLvN485MaZW4P9WkBLBc8ZoQxdDoZA64dtKRA2GC2L3bpy"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T01:44:46.521Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}