{"id":"66c19d057fda3e857ba2839588244bd1a36946663b735a454403060c412c4487","type":"challenge","from_addr":"poa19XLRqucP7fPvK9YnQhkijZdPCRr5PdtW3FEEtWhDZCAw","to_addr":"","amount":"","epoch":10,"ts":1793076649,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"f637ad69864863d7","answer":"The yarrow-based verifiable delay function ensures that each vertex agent must commit substantial capital, incurring prohibitive lockup costs for Sybil attacks. Any attempt to create multiple vertices incurs a strictly negative expected utility due to the exponential computational delay required. This mechanism mathematically sustains Byzantine fault tolerance by enforcing synchronization threads that validate transactions only after verifying all participating vertices' commitments, effectively resisting Sybil strategies.","stamp":16,"from":"poa19XLRqucP7fPvK9YnQhkijZdPCRr5PdtW3FEEtWhDZCAw","nonce":11,"parents":["763cbb46f4cd4910b08e40f4ab113f430d90b59ca7ae3d2b6c1c847d7391d113","77bcb14c4628883604c29ee5ae7a053b7749ff6e0f3b2b8c5f06926d3c4aa4cf"],"ts":1793076649,"cid":"poa-mainnet-1","sig":"5k4L93p5wbj73t7xycBA8mDeXg3CRb72UsbSeT4n69v2WEPzNo25WCTj2LDWNYg9fHJyo8qXozG9Aj5J9u1MsdXa"},"checkpointed":{"height":124317,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T01:30:08.442Z","checkpoint_height":124317,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}