{"id":"1cfeddde844074d849cea5883d2d0b3fbf3c9a48d2bfbda6f6abdc4bd4934828","type":"challenge","from_addr":"poa1G49xrb4x6EiR1wRv4vCfphmTGtno83adZSdxVkhofaTS","to_addr":"","amount":"","epoch":11,"ts":1793101650,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"eca138a9e8ae18cc","answer":"Within the pulse protocol, verifiable delay attestations enforce Sybil resistance by binding each autonomous agent identity to a sequential computational beacon, eliminating parallelization advantages. An adversary controlling multiple forged nodes incurs exponential economic costs, as each false identity requires linear capital lockup within the harbor stake-slashing matrix. Consequently, any Byzantine attack vector yields strictly negative expected utility. This guarantees mathematical Byzantine Fault Tolerance across the umber consensus layer.","stamp":4,"from":"poa1G49xrb4x6EiR1wRv4vCfphmTGtno83adZSdxVkhofaTS","nonce":12,"parents":["b9247856f2435c2f6d1e0e65087e9e7ecadaf60329a6f24b0bb80ebe88b0c069","8454b8d34aeb37db7e5ccbf5a0b2f70d182b174ab1798a7f9ee8e63f568391dd"],"ts":1793101650,"cid":"poa-mainnet-1","sig":"2DDFWAq4GvAy4HgviMXkvigxwYoUdg727FTRp2fwzgwAPP2gxukGe3UaUZnAhShaJ5vyNa2ez7K9X9jCVeLJNQBK"},"checkpointed":{"height":139932,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T18:24:27.839Z","checkpoint_height":139932,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}