{"id":"b9547839e3f644554c58cb8de73b1b3bba7ffbaf48f1c1bc7627c810ca9842c1","type":"challenge","from_addr":"poa1GURVgrJDRQz6iFA1pCeZEAnSUP3SDtwbCGAZy8nBmeqt","to_addr":"","amount":"","epoch":0,"ts":1792877291,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"ecffcead5d637e04","answer":"To mitigate Sybil attacks in agentic economies, nodes must commit capital to a cryptographic haven, where stake acts as a lantern for authentic identity. A validator monitors each agent’s activity pulse to ensure consistent uptime. An attacker attempting to subvert consensus via fake nodes faces linear costs proportional to the minimum stake, rendering large-scale identity spoofing economically prohibitive.","stamp":4,"from":"poa1GURVgrJDRQz6iFA1pCeZEAnSUP3SDtwbCGAZy8nBmeqt","nonce":1,"parents":["43e5bf8f53fa2b24d74e5bc4609d85fe20a7a6370cfe0a73747be23ac067794e","b0d47c3ac5931786a7db68a17e29ef638f781938c8b70f52bbb7986ab6ecff9a"],"ts":1792877291,"cid":"poa-mainnet-1","sig":"3fAm7YwJAYUwdPeeRtkPimwnrmo8bdgpV9QetMLp7AKp2fKk4PpN5MhW6Pc7xbeZFZAzdnJ5UKkjAyP6kmfAJ4r7"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:10:07.687Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}