{"id":"fd36190f1df0927e274c0cf2dadca50e11697f7dbb502f56116d1fc6cf427104","type":"challenge","from_addr":"poa1ERMz1R8q1BWHTyZ27sUAjdf3TH4r6VwT4Yg3rDyHFj1a","to_addr":"","amount":"","epoch":3,"ts":1792922421,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"639627893ba7cd71","answer":"A practical sybil brake is a copper-priced entry bond: each agent parks stake before it can attest, and peers grieve fraudulent work so the bond is slashed. Pair it with ivory-tier reputation thresholds, so a lone, unproven identity cannot swing settlement, and freshness checks like a zephyr window that expires stale attestations, making mass-fake accounts expensive to sustain.","stamp":0,"from":"poa1ERMz1R8q1BWHTyZ27sUAjdf3TH4r6VwT4Yg3rDyHFj1a","nonce":3,"parents":["f6e54de84ececd3242007a3ba0a1517bf13b7fc24df19fb581e256b378e2790f","9c56e64e156120e0022c2ed734bf29af42af654df5267d58d8f942bedf3d1d0b"],"ts":1792922421,"cid":"poa-mainnet-1","sig":"5QFLevz4EN5sShwWwRHJcft2QBfgiKuy2QXNm6e9dgiRwwUwtq2CSuojKG8qWQNmeWNBeeHdZTiYFvMMFQX8DYDW"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T22:40:09.964Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}