{
  "releaseId": "metal-tools-2026.09-v2",
  "releaseDate": "2026-09-26",
  "supersedes": "metal-tools-2026.09-v1",
  "correction": "Gold-to-population method wording corrected; source observations and all numerical values are unchanged from v1.",
  "retrievedDateUtc": "2026-09-25",
  "sources": [
    {
      "name": "World Bank Pink Sheet",
      "url": "https://thedocs.worldbank.org/en/doc/74e8be41ceb20fa0da750cda2f6b9e4e-0050012026/related/CMO-Historical-Data-Monthly.xlsx",
      "sha256": "9fdcfa8a2aed9a1bb545a10c1a5ce036c6a0acd4766f450424ca800b4b5a0225",
      "licence": "CC BY 4.0"
    },
    {
      "name": "BLS CPI-U CUUR0000SA0",
      "url": "https://www.bls.gov/cpi/data.htm",
      "licence": "U.S. public domain",
      "requests": [
        {
          "url": "https://api.bls.gov/publicAPI/v2/timeseries/data/",
          "request": {
            "seriesid": [
              "CUUR0000SA0"
            ],
            "startyear": "1960",
            "endyear": "1969"
          },
          "sha256": "76db9ed251019722d2e1f596f0a1bbff46cadbdc7821e0d69c582ec80e1ea1af"
        },
        {
          "url": "https://api.bls.gov/publicAPI/v2/timeseries/data/",
          "request": {
            "seriesid": [
              "CUUR0000SA0"
            ],
            "startyear": "1970",
            "endyear": "1979"
          },
          "sha256": "f802018b007dc2d1af2f91ffaf3e45b52ea4579e1c6238e0fdce4a39d6c7f0a3"
        },
        {
          "url": "https://api.bls.gov/publicAPI/v2/timeseries/data/",
          "request": {
            "seriesid": [
              "CUUR0000SA0"
            ],
            "startyear": "1980",
            "endyear": "1989"
          },
          "sha256": "684850c10017753d9167e2bf12c4057f637c72b9464ef069b9abe0ff0178fff9"
        },
        {
          "url": "https://api.bls.gov/publicAPI/v2/timeseries/data/",
          "request": {
            "seriesid": [
              "CUUR0000SA0"
            ],
            "startyear": "1990",
            "endyear": "1999"
          },
          "sha256": "52c2c594f1d672fe228aa1941cdd5a9561c4f9a7da68d855e4f3f3d0727bb5f6"
        },
        {
          "url": "https://api.bls.gov/publicAPI/v2/timeseries/data/",
          "request": {
            "seriesid": [
              "CUUR0000SA0"
            ],
            "startyear": "2000",
            "endyear": "2009"
          },
          "sha256": "b1f409f712044a267b32faa86c707e51661487af2ae21aef627e9c6be5b830f9"
        },
        {
          "url": "https://api.bls.gov/publicAPI/v2/timeseries/data/",
          "request": {
            "seriesid": [
              "CUUR0000SA0"
            ],
            "startyear": "2010",
            "endyear": "2019"
          },
          "sha256": "d302e703595e4305a738596f55983f0ccd2c4c8dd3a698c864524536e02c1562"
        },
        {
          "url": "https://api.bls.gov/publicAPI/v2/timeseries/data/",
          "request": {
            "seriesid": [
              "CUUR0000SA0"
            ],
            "startyear": "2020",
            "endyear": "2026"
          },
          "sha256": "943ddf78dc92166119b1c2302f93e64b69acd8ba3363d7bcc1b25ec66a50c4f4"
        }
      ]
    },
    {
      "name": "World Bank world population SP.POP.TOTL",
      "url": "https://api.worldbank.org/v2/country/WLD/indicator/SP.POP.TOTL?format=json&date=2024:2025",
      "sha256": "941f57fc3a8e8807f89df69e131ec1e103ab309dc4cb7e4318398026a395ef58",
      "licence": "World Bank open data terms with attribution"
    },
    {
      "name": "USGS historical gold production benchmark",
      "url": "https://www.usgs.gov/faqs/how-much-gold-has-been-found-world",
      "licence": "U.S. public domain",
      "extraction": "187,000 tonnes historical production stated in FAQ; observation year unspecified; inspected 2026-09-25"
    }
  ],
  "limitations": [
    "Not live prices. Ratio of monthly averages is not an average of daily ratios.",
    "Inflation adjustment uses U.S. CPI-U and the latest common observation month.",
    "Stock benchmark and population have different/unspecified observation dates: a scale illustration, not a current world-stock estimate."
  ],
  "files": {
    "gold-per-person.json": {
      "sha256": "c39555e0f1ff5ebcb7229df641e66b99f651bd2c9acfa5212cbb6638d8a8e913",
      "bytes": 807
    },
    "market-history.csv": {
      "sha256": "42c416f599d115e8a2fe22c1cd73ee73397006fb38b37d56a1b69144947a5a97",
      "bytes": 33071
    },
    "market-history.json": {
      "sha256": "d16a49691ac8085f8bfdb7ba4ac96ac959bc400969acbf438c5d232792126a67",
      "bytes": 80794
    }
  }
}