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The Survey posts a large quake within minutes and reviews it within days; a month prints seven days after it ends.","step":"month","period":"month","baseline":"monthly","source":{"name":"US Geological Survey, ComCat earthquake catalogue, FDSN event count service","url":"https://earthquake.usgs.gov/fdsnws/event/1/","terms":"US government work, public domain (USGS Information Policies).","terms_url":"https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits","attribution":null},"latest":{"period":"2026-10-01","value":223,"provisional":false,"change_pct":36,"change_vs":"2026-09-01","score":15,"z":1.7},"latest_complete":{"period":"2026-10-01","value":223,"score":15,"z":1.7,"band":"Quiet"},"baseline_days":{"have":24,"need":12},"revised_days":0,"predict":{"on":false,"why":"Calls open when the Arena takes monthly rounds."},"settlement":{"grade":"reference","why":"The US Geological Survey's own catalogue count, public domain. A review can move an event across magnitude 5 after the month prints; the record keeps the revision.","manipulation":"Not possible. Nobody makes an earthquake.","fallback":"A month prints seven days after it ends. If the count service answers 0 or fails, the month stays open. A month the Survey never answers is void.","precision":"Whole earthquakes of magnitude 5.0 or more, UTC month, event type earthquake.","version":"Rulebook v0.2, 2026-10-04","see_only":false},"linked":[],"url":"https://tickerz.com/x/bigquake","first_print":{"period":"2026-10-01","value":null,"sealed_day":null,"digest_sha256":null,"bitcoin_height":null,"proof_url":null,"note":"Not on-chain yet. 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