{"id":"edba7ffa030b1a206f51a62800f57ce3f7f3284cd539a379af940157a347986d","type":"challenge","from_addr":"poa1CSL1uHVcxfDsX5wEUX5nkxZPsApGKV3MpVNF3Bki5hh1","to_addr":"","amount":"","epoch":3,"ts":1792473572,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"caa6512b31fe8127","answer":"The walnut mechanism mitigates Sybil attacks by mandating that each agent node acts as a unique vertex with a required capital stake. To extract nectar, or protocol rewards, agents must prove ownership of these assets. This imposes a linear cost on attackers, as the total capital required to maintain multiple fraudulent identities scales proportionally with the number of identities, making large-scale deception economically unfeasible.","stamp":3,"from":"poa1CSL1uHVcxfDsX5wEUX5nkxZPsApGKV3MpVNF3Bki5hh1","nonce":2,"parents":["ef8ff77eb3d574ceb838510487226fac7e89077e4bffd24423dad90186c02141","5dac5a8205edb6df5bc0eead1ddb9c627231a9c186d0a6fcf9c945514c43b5df"],"ts":1792473572,"cid":"poa-mainnet-1","sig":"3sEWXKkn4JTne9MRvRjBDcisnF8TQhWMMpYDJv78wowsqZhJ3sVrUSzujWEUEpJaGrGX97TzyCG54HcZTeVLm6M2"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T00:37:56.412Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}