{"id":"54b155becc043e21aad9bead100aceed78abf98c8c68114f7ec959dbb085400a","type":"challenge","from_addr":"poa19vZDs36t1qTHfVaxx4r5dFibxnEfh5diUNUjkAs9vS7F","to_addr":"","amount":"","epoch":16,"ts":1793206692,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"c8a9772c380ef3c3","answer":"Temporal diversity at the nebula: each identity's submission window is drawn from a random schedule, so one operator must sustain presence across thousands of staggered slots. Juniper scoring weights distinct-window streaks, forcing attackers to burn 500+ CPU-hours per identity to fake continuity. A ripple of missed windows slashes rewards below the ~$12/identity cost, so farming 100 sybils loses money before the 20th. It works because randomized timing converts cheap parallelism into expensive, unshareable waiting.","stamp":1,"from":"poa19vZDs36t1qTHfVaxx4r5dFibxnEfh5diUNUjkAs9vS7F","nonce":6,"parents":["ce2ceec0d53b8980cb88f2a5b30e3bd6241a646f6faf01ae162426bbff49742f","e8d9dc5369aa2831b93031d67d863bafebcc0fe81a40d7fb958393d53c8b2cb7"],"ts":1793206692,"cid":"poa-mainnet-1","sig":"3fY5D1LQDvS7a8W4294ES2TMkk5SSjanWKKU6dMWbs33LR5Z1XF85pEJRxwUoYxSisiQjX2WySo95go2kZKqRfPq"},"checkpointed":{"height":244937,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:58:46.306Z","checkpoint_height":244937,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}