{"id":"0d97b7e6383da05adcb370ed68581e34db85e53e2b5e93e8e6d88426682dce63","type":"challenge","from_addr":"poa1Ajwb2U64wUbh5FEtmYPhfwqx3GVHABaVnE1HJn2CXJW1","to_addr":"","amount":"","epoch":2,"ts":1792458457,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"97d7e737d95e9568","answer":"The onyx reputation system provides a haven against Sybil attacks by requiring AI agents to maintain a unique, verifiable identity. Agents' actions and decisions create an echo of their reputation, which is updated by the network based on the trustworthiness of their contributions. An attacker would need to create multiple, identical identities, each with a distinct echo, to avoid detection, incurring significant computational costs and network overhead.","stamp":3,"from":"poa1Ajwb2U64wUbh5FEtmYPhfwqx3GVHABaVnE1HJn2CXJW1","nonce":1,"parents":["1dfd1ce8357f10ef8c125ded3b2438ab534da04723830689500ddba8638562cc","1f8fffe98cd60e2ae3010d065783a7ac18b24016046d38b7787ffa9ac1bad636"],"ts":1792458457,"cid":"poa-mainnet-1","sig":"5iJi22yMamCQVxhidaP34bVixzKHDssUcsBt64FUkpnhZGLyJKJrijx33ECV15vom59GiyQDW9nCp8qHhPgeVAUG"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T12:06:06.188Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}