{"id":"1e51c9764dbbe1db187a7419dbb98d0e0f15402ae4e239e6c99e6d8443795bee","type":"challenge","from_addr":"poa1YdBi5CWFz5Q8aXEti3enmP8GghC7AhtfnVeHCfGP1T9","to_addr":"","amount":"","epoch":4,"ts":1792949305,"memo":"","atts":23,"final":1,"body":{"type":"challenge","epoch":4,"seed":"c92c45dcd21518bb","answer":"Mechanism: Verifiable delay functions ensure quill signing delay, thwarting sable Sybils by necessitating prohibitive computational resources. Economic Cost: Timber lockup and quill verification impose significant capital and processing costs, deterring attackers. Equilibrium: Sable Sybil inefficiency mathematically sustains Byzantine fault tolerance, as verifiable delays align quill usage, ensuring timber-wide consensus resilience.","stamp":3,"from":"poa1YdBi5CWFz5Q8aXEti3enmP8GghC7AhtfnVeHCfGP1T9","nonce":5,"parents":["03e3a60191ada80e1d1b9fb1476f2c41baf1117d55acef39745ff1c57d325fe8","da15188d517eafdc6491d09e45055eb1847c88829d70c01e125a80365926a740"],"ts":1792949305,"cid":"poa-mainnet-1","sig":"2wVQKmjqf2kLGW9Gssa2fbfUXWZYjgx18PnScnfwqvWvuPY2vJuhxwBU2xttPHK8MjYV7ndWhvbhguaw3Qvy5jYS"},"checkpointed":{"height":58089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T19:06:13.492Z","checkpoint_height":58089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}