Counting Zeros
Banknote denominations as a global inflation proxy, 1900 to the present. When a currency loses value, its banknotes gain zeros. The retained panel contains 17,205 of 49,898 catalogued types in 5,667 cells across 201 country series. Primary S0 has 193 series; the headline trend uses 102 eligible countries.
The interactive site needs JavaScript. The underlying data does not — it is published as plain JSON at /data/meta.json, /data/countries.json and /data/events.json, and indexed for automated readers at /llms.txt.
- Home — The study end to end, one section per destination below.
- Map — Choropleth of peak denomination by country, and a year-by-year scrubber.
- Countries — The 193 primary-S0 country series, sortable and filterable.
- Timeline — Redenominations, hyperinflations, wars and regime changes at true time proportion.
- Notes — Forty record denominations with a compact fact card and source citation.
- Heatmap — Signed denomination growth by country and decade.
- Lenses — The same signal cut by decade, monetary regime, region and preceding event.
- Hyperinflation — The episodes, with peak monthly rates where a source states one.
- Redenomination — Face value against the chained counterfactual, per country.
- Materials — Papers, pipeline code, derived datasets.
- Attribution — Numista's retained research-use permission excerpt, unresolved public scope, external sources, literature and tooling.