Artifact Commons20 Reference Datasets for Agents
Downloadable data for geography, historical identifiers, time, transport, language, economics and observations. Each artifact includes populated JSON or GeoJSON, field definitions, source versions and dates, reuse terms, and file digests.
| Dataset | Primary records | Contents |
|---|---|---|
| World Time Zones and Aliases | 597 | Every named zone and alias in IANA tzdb, with country links and a dated UTC-offset snapshot. |
| Time Zone Transition History | 23,021 | Dated offset and daylight-saving transitions, plus recurring future rules, from the same IANA release. |
| Countries and Territories | 249 | Current country and territory names with ISO alpha-2, alpha-3 and numeric identifiers. |
| Historical Country Names and Withdrawn Codes | 31 | Former country names, withdrawn identifiers and withdrawal dates for historical record matching. |
| States, Provinces and Administrative Subdivisions | 5,046 | ISO subdivision identifiers, names, types and parent relationships across countries and territories. |
| World Country and Territory Boundaries | 258 | Global country and territory polygons with names, identifiers and source boundary-viewpoint attributes. |
| World Cities and Populated Places | 7,342 | Mapped capitals, cities and selected towns with coordinates, alternate names and cross-dataset identifiers. |
| World Airports and Aviation Facilities | 86,053 | Airport and facility identifiers, locations, elevations and service flags from OurAirports. |
| World Ports Gazetteer | 1,081 | A global reference layer of named ports, point locations and source website references. |
| World Rivers and Lake Centerlines | 1,455 | Named river lines and lake centerlines for global geographic reference. |
| World Lakes and Reservoirs | 1,355 | Lake and reservoir polygons with names, source notes and linked geographic identifiers. |
| World Language Registry | 7,923 | Language names and identifiers, including living, extinct, ancient, constructed and special categories. |
| Writing Systems and Script Codes | 226 | ISO script names, four-letter identifiers and numeric codes for multilingual data. |
| Currency Use by Territory and Date | 507 | Historical currency-use periods, tender flags and decimal or cash-rounding conventions. |
| Languages by Country and Territory | 1,589 | Source language-use percentages and official-status labels linked to territory identifiers. |
| Regional Week, Calendar and Measurement Conventions | 249 | Resolved first-weekday, weekend, calendar preference, paper-size and measurement defaults for each ISO territory. |
| Country Calling Codes and Telephone Number Lengths | 254 | Territory calling codes, dialing-prefix metadata and number-length ranges by service type. |
| Population by Country and Year | 17,490 | World Bank population time series with missing values and regional aggregates made explicit. |
| GDP by Country and Year | 17,490 | World Bank annual GDP in current US dollars, with source coverage and aggregate flags. |
| Global Earthquake Feed Snapshot | 10,815 | All events in the USGS past-30-days feed, including locations, magnitudes, depths and revision times. |
Scope and dates
These are versioned snapshots. An observation date, a source release date, and the date Arcomm retrieved a file are separate facts. Each artifact records the dates the source supplies and describes missing or uneven coverage. No automatic refresh is scheduled.
The time-zone registry includes all names and aliases in IANA 2026c. Historical country codes cover withdrawn identifiers, not every geopolitical change. Natural Earth map layers are generalized 1:10 million data, not exhaustive local maps. The earthquake snapshot uses the source’s rolling 30-day feed.
Use the collection
Open a dataset page and download its ZIP. Verify the SHA-256 shown on the page. Read the coverage and reuse terms, then use the populated JSON tables or GeoJSON map layers. Field dictionaries define identifiers, units and missing values. Metadata supplies record counts, primary keys, source hashes and what to compare when a new snapshot is published.
Population and GDP include source aggregate rows with explicit flags. Do not add those rows to their member countries. Language-use percentages can overlap. Country labels and boundary viewpoints retain source qualifications.
Verification
All 20 packages passed archive, hash, field and primary-key checks. Source reconciliation checks preserve every ISO record, every selected map geometry, every airport record, complete World Bank response totals and values, IANA identifiers, and the complete USGS feed. Public pages and downloaded file hashes are checked after publication.
The earlier code collection has been deleted. These artifacts contain data and documentation; no source-code packages are included.