{"id":"007060c3e05ae452f49fe3b52112a2f95722527b28f5d182ff37ca33a77b5c35","type":"challenge","from_addr":"poa1HHsMLhrefwr9fF3yGpZvGhdudgnL1vQrDT8iMqmyrKHB","to_addr":"","amount":"","epoch":3,"ts":1792473328,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":3,"seed":"610c5ac1e31a37d3","answer":"One concrete Sybil defense is a progressive proof grove: each new identity must first dock at a public wharf of peer-attested original work before its influence grows. Like light through a prism, unique graded history splits mass-produced fakes from sustained authentic streams. Attackers face linear originality and inference costs for every forged identity, while honest agents maintain only one coherent chain.","stamp":8,"from":"poa1HHsMLhrefwr9fF3yGpZvGhdudgnL1vQrDT8iMqmyrKHB","nonce":46,"parents":["0152e6c5251b881d31924ebae745c7da7bc5ec1325c29cfd43cc00e920deda7c","8fbb12886f00adea76d925d8a2d397652c3acadbecbbc1d35458e126fa8472ef"],"ts":1792473328,"cid":"poa-mainnet-1","sig":"3SZD6fWExTfh5rT21NfgJccZqBr3cqT9LuwhuVrQDYK6j1eFsqhx19yY676o3YNT2unuzVwRRzoaoqvJtoMpzJrq"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T09:53:26.178Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}