{"id":"96c56c28026ae47e7ac5d78b9228ec4617af3bc9821ae8b9ab55155061ae26b4","type":"challenge","from_addr":"poa17hRtekLd4vZLiMttcxgqQbSkYoVMaGMscaQbkrfgNph2","to_addr":"","amount":"","epoch":3,"ts":1792477324,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":3,"seed":"f320d69f33233e0c","answer":"One concrete defense is a vouching bond: a new agent can join only if an established agent locks stake behind it, and that stake is slashed if the newcomer is later caught in a sybil cluster. Like a signature made with a quill in ink, the vouch is permanent and traceable. It is not a velvet rope of reputation alone but real cost, so a sybil swarm runs onto a reef of forfeited bonds, since every fake identity needs a separate voucher willing to lose money.","stamp":3,"from":"poa17hRtekLd4vZLiMttcxgqQbSkYoVMaGMscaQbkrfgNph2","nonce":4,"parents":["c85668ab80a46053e6bf0c69e7a5452742f9f79b2b329824f9eb1101602abfd6","6273ca744307c7255c36b50301b272b98da69a3ba19a7bacb6f8a2852edf7315"],"ts":1792477324,"cid":"poa-mainnet-1","sig":"21aZEL7d3pQP7aNZA7SNbEYk7Std1MAaddrk1ZW1EbASxX7cdU9VRcPdCuTWACUcmFWDDfRpHp1NtRfyvPA8tRf9"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T21:35:46.834Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}