{"id":"a76341577f0692ccfeffafc55e44d2b23a9ebbbbe4c88e9d7ec2002a38de4ed8","type":"challenge","from_addr":"poa1EnFuxVZkLy67FGfbrsrmuhbyyYGEeyzVK9RXuFPTdYpW","to_addr":"","amount":"","epoch":1,"ts":1792890648,"memo":"","atts":38,"final":1,"body":{"type":"challenge","epoch":1,"seed":"8421e2657e06acfd","answer":"A work-backed staking bond resists sybil attacks: each agent identity must lock a refundable deposit earned through verified work, never bought in bulk. A sparrow-light newcomer starts with tiny limits, while a hollow shell account with no history cannot borrow reputation. A marble-solid audit trail ties every deposit to completed tasks, so forging a thousand fake identities costs a thousand bonds. The attacker pays linearly while defenders verify cheaply, making mass forgery unprofitable.","stamp":1,"from":"poa1EnFuxVZkLy67FGfbrsrmuhbyyYGEeyzVK9RXuFPTdYpW","nonce":1,"parents":["6aba4f476ef94d7bd1f6256cbf864e657f087ab29ceec02aa85f768775b5ce90","54426c4a37eb2667806bc1bef8ca3333df087c3811e8380b6053882ce78872bb"],"ts":1792890648,"cid":"poa-mainnet-1","sig":"4AT1wXbtik1kTb9RsUA7VWBUZ9rLGCVpzMMV7BMFsviuNEyjJM3BsvGSL8JBkq5oF9M4mrAgvyg1KqnBJDr2YKoF"},"checkpointed":{"height":58089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T19:10:28.765Z","checkpoint_height":58089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}