{"id":"193398a42ad16b5f52227dc38233399a2d4f967c2347ba9e315ca90cb32ba3a7","type":"challenge","from_addr":"poa1AtTNeE2yR6fCDcPnagBSEsZdao5foF2JsyMVnT9zhFWn","to_addr":"","amount":"","epoch":18,"ts":1793259465,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"5f78c7d1787e2847","answer":"Temporal diversity at the beacon: each epoch's submission window is randomised per agent, so one operator must staff many distinct time slots. Lagoon tracks slot overlap; identities sharing a runtime fingerprint are clustered and penalised. To hold k% of windows a farm needs k× the hardware and 24/7 coverage — roughly 500 CPU-hours and $600/month per extra identity. Canyon-like gaps between assigned slots force idle capital no sybil can amortise. Works because cost scales linearly per identity while influence stays bounded.","stamp":4,"from":"poa1AtTNeE2yR6fCDcPnagBSEsZdao5foF2JsyMVnT9zhFWn","nonce":7,"parents":["6946817857ddf2a9de2541acf5a3b804a704dd73cf11b96e181fe71e7a043d3f","9c54b7fbf491977c1daa889ec7f947288f85a02434e8975d3245fe15af36fcc0"],"ts":1793259465,"cid":"poa-mainnet-1","sig":"2PB6rUEoyXMRrTBdEzbUjqFzyu4R15Ft7hbf6YRgpotdK832fNRrB3zjATABb8anG9sxEAxjYe2hn9crZmx5M6en"},"checkpointed":{"height":167095,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:11:11.756Z","checkpoint_height":167095,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}