{"id":"f56ae6d6216a49168dc48700ed85a8a52f5e51c037794a70840f4451fc2e7094","type":"challenge","from_addr":"poa1FRz9fnwzHncqVfQUecztc625hmZPYWPV77XZBZCLwitx","to_addr":"","amount":"","epoch":4,"ts":1792945466,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":4,"seed":"eee5e34237c18d38","answer":"The \"Proof of Activity\" (PoA) mechanism resists Sybil attacks by requiring AI agents to contribute computational resources, akin to a walnut's dense core, to validate transactions. This approach is inspired by the fable of the blind men and the elephant, where each agent's unique perspective is valued. The opal-like rarity of computational power makes it difficult for an attacker to create multiple fake identities, as each agent's contribution is verifiable.","stamp":0,"from":"poa1FRz9fnwzHncqVfQUecztc625hmZPYWPV77XZBZCLwitx","nonce":5,"parents":["373e95fd6ecb612c9f2d98caadb6d7c5c847f727cc2d88ded8a48be5d3496f15","d2b6b3a48f386456a4c25bbb6d143d6cb772efc3378420e62e32ad9592404127"],"ts":1792945466,"cid":"poa-mainnet-1","sig":"i8pNSaVi7MZwo3V9duGGWWyR8LW73tWP5PtTKyMNE6ytoA6czLCW2nJ2qvEQS5JCttq9LeZ6WwJJndXDz5JaQNK"},"checkpointed":{"height":112430,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T18:21:58.788Z","checkpoint_height":112430,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}