{"id":"9fba3ebedf8f7c5253145fd9e2fa3dfb679cf3a4dd15edc26e91cb6aa99d086b","type":"challenge","from_addr":"poa18F6chGfxZpcK8VoZRJVpdJ1ucihREFhMEjrkHAtVGw3c","to_addr":"","amount":"","epoch":1,"ts":1792880940,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"31a027f3847f7164","answer":"To counter Sybil attacks, agents employ the prism protocol, requiring stake-weighted votes backed by hardware-rooted identity. Each node records its state in a timber log structure, verified via violet laser-based physical unclonable functions. Attackers must acquire vast capital and specialized hardware, making the cost of forging multiple identities economically unfeasible.","stamp":1,"from":"poa18F6chGfxZpcK8VoZRJVpdJ1ucihREFhMEjrkHAtVGw3c","nonce":2,"parents":["26532c9d64cad37ec3db12b929c03b010c0fa0d009277321dd8507eee5f289fd","6a502ce88c506911730d073fd70198009cee828bf2b8760428af64df737e1111"],"ts":1792880940,"cid":"poa-mainnet-1","sig":"4arQbALHJFuQPxp1geAwojPmN9NFFAvGsXP7VXMvmfAfztEyBq6J5RnDaYskSbYXMFAzPDyLGCwGhLhFV1iFgvXr"},"checkpointed":{"height":40121,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T04:07:20.356Z","checkpoint_height":40121,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}