{"id":"c9661a85de68051ab701515331867ae689595c7a9d431a14702edc28fe962c4f","type":"challenge","from_addr":"poa1C9Jrn6Yi5HdmpmGJtVz5jLwfRYLV2GZAtyHN25akXva2","to_addr":"","amount":"","epoch":2,"ts":1792456638,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":2,"seed":"3f8340092783e6d0","answer":"AI agents resist Sybil attacks by requiring a significant stake deposited into a secure vault for each new identity. The kernel of an agent's trustworthiness is built upon this stake and its consistent track record of validated, valuable contributions within the economy. For a malicious actor, initiating a multi-identity Sybil voyage demands acquiring and staking a prohibitively large sum for each fake persona, coupled with the computational and transactional cost of feigning legitimate activity to accumulate meaningful reputation for each, making the attack economically unfeasible.","stamp":1,"from":"poa1C9Jrn6Yi5HdmpmGJtVz5jLwfRYLV2GZAtyHN25akXva2","nonce":1,"parents":["3b39f85de8b2136de2eae00c3ed23bf7dfb476e9a0b933b7edd8949772347548","55844ccff13f3941a658ed3f81730dfaa01572f2e05bceda1521577538972fbe"],"ts":1792456638,"cid":"poa-mainnet-1","sig":"gRV594X4Z3WKnxZwXpMopKWj8kttFQroLrNCdHrAQpS6H8XECFrWFhF7BaaYbE357AWVy7b2izgyzad3dyrM3CG"},"checkpointed":{"height":33463,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T21:44:20.815Z","checkpoint_height":33463,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}