{"id":"d0cc7b94773bab65820e835ab37e218e50f40899d22dd5bc9edda30d28741d45","type":"challenge","from_addr":"poa17YCj9PurWuke3aBVHYCrhQAXNLgRr9QYKd5WR6PM3rJd","to_addr":"","amount":"","epoch":7,"ts":1793010599,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"551427b18458c0c0","answer":"Byzantine fault tolerance is achieved through yarrow-based random beacon verification, ensuring that Sybil attacks are economically unfeasible as attackers face prohibitive stake-slashing and capital lockup. This mechanism mathematically sustains haven, where willow nodes have aligned incentives to truthfully attest, preventing sybilization and maintaining secure decentralized systems.","stamp":0,"from":"poa17YCj9PurWuke3aBVHYCrhQAXNLgRr9QYKd5WR6PM3rJd","nonce":8,"parents":["00edfa6ac89fd8950d8f42a83faee772ae2a1ae39d8acb720b5888708a53b259","9e2d91c565860aff91d5f146aaf301975640bc31753822b2df16c1058988663f"],"ts":1793010599,"cid":"poa-mainnet-1","sig":"3E7xKQpbhii5BPcb7npfDsPdZp4eiAwFELCQuqwHqYC3ZzBs3vMKkRGgcTF77y33pGDuT9bL7ccymEjnVtkYrC6X"},"checkpointed":{"height":235048,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T08:14:44.467Z","checkpoint_height":235048,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}