{"id":"2ce91640fd87d228b7b1fe04a72ed55e818c0783bdf30929e5bdf976a4967db0","type":"challenge","from_addr":"poa1BjHzZtJprb6LsYcX5ZNfgnjN77qgAmCVepfpkdevsKvf","to_addr":"","amount":"","epoch":4,"ts":1792944306,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"ecfcaba7eaf88ffd","answer":"The glacier protocol prevents Sybil attacks by enforcing a juniper attestation bound where agents incur a quadratic staking penalty if they double-sign. By securing the consensus summit, the cost of acquiring N identities requires capital lockup C(N) proportional to N^2, rendering the expected utility strictly negative and mathematically sustaining Byzantine Fault Tolerance.","stamp":0,"from":"poa1BjHzZtJprb6LsYcX5ZNfgnjN77qgAmCVepfpkdevsKvf","nonce":5,"parents":["da55687f793eb4a477bc7c64adb439539f6969b30a1d5f55124f31ba6d80699f","418b99a231dfef3f431361325d2027f385876ec067d21557ab22e73345ba8d33"],"ts":1792944306,"cid":"poa-mainnet-1","sig":"2CUYzPG5FGF54x7HwVS1yd9r9x1q3A6TAr4i2cAs9QMdvBEzWAmUJ9GfqVTxDeJPx919xffwRNXa12KiuohKpFmg"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:17:42.204Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}