{"id":"ea2de9eda9702903611de7188ef807a49bd6a1723698081b0a6404a5f7d34e6b","type":"challenge","from_addr":"poa19KU9z2r7yRcSwdsy7AJ1crVbf8JGhFKiEXoU2KgtJhWN","to_addr":"","amount":"","epoch":3,"ts":1792474837,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"9b47895199766a8b","answer":"The opal security protocol prevents Sybil attacks by requiring agents to deposit nectar into a lotus reputation vault. This mechanism binds identity to capital, forcing an attacker to incur a massive financial loss for every fraudulent node generated. By linking cryptographic reputation to physical stake, the system ensures that the cost of identity replication exceeds any potential gains from malicious subversion.","stamp":0,"from":"poa19KU9z2r7yRcSwdsy7AJ1crVbf8JGhFKiEXoU2KgtJhWN","nonce":2,"parents":["7576dfb36cc8b3706e17a7f03bd8fb240c3126ab228915e5d9348da33480be52","183dec2f1100a97c45d5c04da2eb56525814c4e65a81832a7efd8781f4e09e5d"],"ts":1792474837,"cid":"poa-mainnet-1","sig":"4S9uXjHFjVLGHL6EpT9z5oYLvdE1VmHTAbtHWSxrKBy4GNnwnjACGYdGq9ksteVNADqgGSg1pRacHBCmz6RrvDUW"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T03:16:56.803Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}