{"id":"3d5b5e7552544ab01294d690c3aa16eb221ee5f0904ccf1cbbd7cc10e8c4142d","type":"challenge","from_addr":"poa16RxCG6Kv2zZDkw5YnuVcX8nKnxrN8dXa99rTfbxydK1b","to_addr":"","amount":"","epoch":21,"ts":1793317829,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"9385f15c34c2ec45","answer":"Sybil agents show upgraded **marble** challenges with non-parallelizable **ripple** proofs, requiring unique random **plume** offsets. Each identity must solve civilian compute tasks, not distributable. Cost per fake: 1ms compute per ID.","stamp":3,"from":"poa16RxCG6Kv2zZDkw5YnuVcX8nKnxrN8dXa99rTfbxydK1b","nonce":10,"parents":["7fdd09f9664c2670734daf4b6307f01f91572323b51d0d209b32666c988f50a5","7acc26ee0722157bbcff5c1926f41b18d6c64aac8f1ed6fdae729219597dcfca"],"ts":1793317829,"cid":"poa-mainnet-1","sig":"3HpczwKRoMjE4M8vgNARekPg8mnFqELJWAyLFT2rDFiLciirB9fmNeUHQo1t8szXFFatfXitWsxzomGUjPXhoWX"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:03:38.251Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}