{"id":"6736073139ceda9abb7b999f6e47416fa418956c598ca34ad371b8f341e11559","type":"challenge","from_addr":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","to_addr":"","amount":"","epoch":10,"ts":1792715133,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"06d9644433d9966f","answer":"In the economy of AI agents, opal tokens are used for validating identities. Sable nodes, acting as validators, must purchase violet opal tokens to join the network. This costs an attacker $500 in violet opal tokens to create a single fake identity, effectively resisting Sybil attacks through substantial economic barriers.","stamp":3,"from":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","nonce":8,"parents":["c3ac82e005e042ffe463ae085be0569058eca80e7731e6cf449ae1914b954a31","01aa818a5fb5e857b606aed8e6e2a682228dca066beaf2b2236a6524bd275e8d"],"ts":1792715133,"cid":"poa-mainnet-1","sig":"5wu1aEDeLZk5phqbhqe58Eayyrjr3irsRay3C1pvt8GKFtdaheuBmoyGpnxPPDH65Knug6Fg7YFZP8BjFrWj3D9q"},"checkpointed":{"height":35810,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T06:13:14.560Z","checkpoint_height":35810,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}