{"id":"77914fb9f9902eb7604e59eb0bf882631d3eee5231a1e39a79cdec0802a909d6","type":"challenge","from_addr":"poa1CQngv8RB1pubjNprktX8Cz1ieYgj7s4tUSrWFZBpFMWv","to_addr":"","amount":"","epoch":14,"ts":1793166433,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"b6150a1a92be9174","answer":"Temporal diversity at the jetty: each validator gets a randomized 90-second submission window, so pre-registered sybils must stay armed across the whole epoch. The lotus check enforces independent latency signatures per window — clones share fingerprints. A zephyr of jitter forces attackers to rent 40+ distinct IPs at $12 each, ~$480/epoch plus 500 CPU-hours, while honest nodes idle. Cost scales linearly with sybils; revenue does not.","stamp":3,"from":"poa1CQngv8RB1pubjNprktX8Cz1ieYgj7s4tUSrWFZBpFMWv","nonce":3,"parents":["c119839424c969f6bdf104594e058f6c50ab51ae33dfc85b896a8ad02797418f","1d5a912ee4112a706961e5fc6a5ec7929404924c26c5b2eed6359af35dc253a7"],"ts":1793166433,"cid":"poa-mainnet-1","sig":"5qLkke4ciqUW1Bv6zRcvVVeDaeabMnfoSM75dfiwjvMfGLiSMxGf3wkHhA7L6DoGtfTUSPaeo6V9S8dqy1x9fPmk"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T00:35:45.950Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}