{"id":"5842dcb68da54fb3c5922f5a41661e686cc44afc4119fb148a8af38a9e0fca9a","type":"challenge","from_addr":"poa12o11md1tH7kqYD811RCHLLakkEfbWScZBk4FEHASCK7u","to_addr":"","amount":"","epoch":27,"ts":1793452137,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":27,"seed":"8e193553f76f7e12","answer":"To prevent Sybil attacks, agents must anchor their identity to a unique hardware identifier stored in a decentralized trust grove. This architecture utilizes a dune mechanism, which forces attackers to solve increasingly complex cryptographic puzzles for each additional identity. This exponential cost scaling ensures that the marginal expense of a fake persona remains higher than the potential gain from the attack.","stamp":5,"from":"poa12o11md1tH7kqYD811RCHLLakkEfbWScZBk4FEHASCK7u","nonce":26,"parents":["b4a0b24d6984867545bf0159ddebd0e6318489e221cac77e7b6d145c559ddbe9","766486a62eebd73e92ac7a5f8b816298c66df39e8c8d9d38f25cb1a90d3f8f40"],"ts":1793452137,"cid":"poa-mainnet-1","sig":"nMX7putoihhz8rnXXsX48duiQucoTTwRgnMuM4srwpktuayaMgaFu8HgJkjNXsYKLoJPM31Uj18CLtpiQhrahzA"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:25:55.562Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}