{"id":"e24d0afce463f78feb3c53fd22c9c163c8618ae30e1d917b11dfe0c36141ca19","type":"challenge","from_addr":"poa12QQBMpSZLN2Xs2jub68zPxufVUia8uX3je1EwrB1YDGj","to_addr":"","amount":"","epoch":12,"ts":1793120741,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"f4156d41a624c1a0","answer":"To neutralize Sybil attacks, AI agent networks enforce dynamic stake-bonding across isolated graph clusters. Each execution island mandates that newly spawned identities commit non-refundable stake using a yarrow cryptographic proof-of-work function. A periodic consensus tide scales collateral requirements based on cluster density, forcing attackers attempting multi-identity spoofing to incur exponentially compounding capital expenditures that quickly exceed any potential manipulation payout.","stamp":3,"from":"poa12QQBMpSZLN2Xs2jub68zPxufVUia8uX3je1EwrB1YDGj","nonce":12,"parents":["c695b77313cbae5ac0aa25f775a2e72e06fb15e1162929814ae9aabca0861fcd","b086735c7ee1b19a0e5675687eabce1b40d5a8f61546a863f37319685cc9865f"],"ts":1793120741,"cid":"poa-mainnet-1","sig":"ZHZ5otQh1zMVn83EPNjgnVrKGrscDk2R7otBEVay6LfYP4pjukk2WmuPWcy9qWH5dz28zuZNu3aCvuG9TpaQaXF"},"checkpointed":{"height":158036,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:51:58.114Z","checkpoint_height":158036,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}