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      "claimKey": "observation:matcha:jade-leaf-barista-ceremonial:package-price:2026-08-28",
      "fields": {
        "seller": "Jade Leaf Matcha",
        "sellerUrl": "https://www.jadeleafmatcha.com/collections/pure-matcha/products/organic-barista-edition-ceremonial-matcha",
        "priceUsd": 18.39,
        "packageSize": "30 g",
        "normalizedUnitPriceUsd": 0.61,
        "normalizedUnitLabel": "per g",
        "note": "Observed sale price; the regular price displayed was $22.99."
      }
    }
  ],
  "changeEvents": [
    {
      "uuid": "dc0d3913-8319-4e0b-86d0-b1355608fb7a",
      "sourceKey": "food-evolution:event:matcha:market-entry:2014",
      "publicIri": "https://thefoodthatshapedus.com/food-evolution/matcha#event-market-entry-2014",
      "identityUuid": "c18cb4e8-ecd5-4173-a681-2d022fe2c2dc",
      "identitySlug": "matcha",
      "productFamilyUuid": "17570ccd-0ace-4530-994b-4c8cde64be0f",
      "eventType": "market-entry",
      "effectiveDate": "2014",
      "datePrecision": "year",
      "headline": "Jade Leaf established its United States matcha operation",
      "description": "Jade Leaf dates its United States outpost and direct relationships with Japanese tea producers to 2014.",
      "fromObservationUuid": null,
      "toObservationUuid": "e4e29d70-0219-4dbb-91c4-1eb2454d3804",
      "status": "confirmed",
      "evidenceIds": [
        "1a17ada6-5135-40ab-bce3-9ff07a1c26d0"
      ]
    }
  ],
  "evidence": [
    {
      "uuid": "c159f7b4-cdc4-42fd-8e99-942e21b8e58f",
      "publicIri": "https://thefoodthatshapedus.com/food-evolution/methodology#evidence-d26279afa128ad91",
      "sourceUrl": "https://aiya-america.com/retail/matcha-products/culinary-grade-matcha/",
      "title": "Organic Culinary Grade Matcha",
      "publisher": "Aiya America",
      "publicationOrObservationDate": "2026",
      "capturedAt": "2026-08-29",
      "evidenceType": "product-or-retailer-page",
      "rightsStatus": "metadata-only",
      "checksum": "sha256:b4f7685c8551790ac6c75b1ae91352af8fd429e8ddfc99dc0ff06f91b08bd42d",
      "supports": [
        "identity:matcha",
        "observation:matcha:aiya-organic-culinary:catalogue:2026-08-28",
        "observation:matcha:aiya-organic-culinary:formulation:2026-08-28",
        "observation:matcha:aiya-organic-culinary:package-price:2026-08-28",
        "observation:matcha:aiya-organic-culinary:availability:2026-08-28"
      ]
    },
    {
      "uuid": "9ffaa0c4-e299-4217-9eed-82dc045f3a58",
      "publicIri": "https://thefoodthatshapedus.com/food-evolution/methodology#evidence-d0024f58b10fcd46",
      "sourceUrl": "https://www.britannica.com/topic/matcha",
      "title": "Matcha",
      "publisher": "Encyclopaedia Britannica",
      "publicationOrObservationDate": "2026",
      "capturedAt": "2026-08-29",
      "evidenceType": "historical-source",
      "rightsStatus": "metadata-only",
      "checksum": "sha256:517dda9bed57c58a2d2ecc666828e92c1ba421915df32be2d0823516cb1f395d",
      "supports": [
        "identity:matcha"
      ]
    },
    {
      "uuid": "1de30bf4-b918-420e-9984-634502e41688",
      "publicIri": "https://thefoodthatshapedus.com/food-evolution/methodology#evidence-3e4759a03b91fae2",
      "sourceUrl": "https://ippodotea.com/collections/all/products/ikuyo-20",
      "title": "Ikuyo Matcha",
      "publisher": "Ippodo Tea",
      "publicationOrObservationDate": "2026",
      "capturedAt": "2026-08-29",
      "evidenceType": "product-or-retailer-page",
      "rightsStatus": "metadata-only",
      "checksum": "sha256:ca14a8859cc1e358e76f7b77adf632b17fab50fb8f59cf449a3b072e30adf850",
      "supports": [
        "identity:matcha",
        "observation:matcha:ippodo-ikuyo:catalogue:2026-08-28",
        "observation:matcha:ippodo-ikuyo:formulation:2026-08-28",
        "observation:matcha:ippodo-ikuyo:package-price:2026-08-28",
        "observation:matcha:ippodo-ikuyo:availability:2026-08-28"
      ]
    },
    {
      "uuid": "acba3777-2866-44a5-95a0-9f49910b20dd",
      "publicIri": "https://thefoodthatshapedus.com/food-evolution/methodology#evidence-87422a0b13f48856",
      "sourceUrl": "https://www.jadeleafmatcha.com/collections/pure-matcha/products/organic-barista-edition-ceremonial-matcha",
      "title": "Organic Ceremonial Matcha Barista Edition",
      "publisher": "Jade Leaf Matcha",
      "publicationOrObservationDate": "2026",
      "capturedAt": "2026-08-29",
      "evidenceType": "product-or-retailer-page",
      "rightsStatus": "metadata-only",
      "checksum": "sha256:fbf051c890ac5456032b21e0a809076834ba720ce9db1a6b0fbc142ae4edac59",
      "supports": [
        "identity:matcha",
        "observation:matcha:jade-leaf-barista-ceremonial:catalogue:2026-08-28",
        "observation:matcha:jade-leaf-barista-ceremonial:formulation:2026-08-28",
        "observation:matcha:jade-leaf-barista-ceremonial:package-price:2026-08-28",
        "observation:matcha:jade-leaf-barista-ceremonial:availability:2026-08-28"
      ]
    },
    {
      "uuid": "1a17ada6-5135-40ab-bce3-9ff07a1c26d0",
      "publicIri": "https://thefoodthatshapedus.com/food-evolution/methodology#evidence-c19a3ad7e9c1ff1f",
      "sourceUrl": "https://www.jadeleafmatcha.com/pages/our-story",
      "title": "Our Story",
      "publisher": "Jade Leaf Matcha",
      "publicationOrObservationDate": "2014",
      "capturedAt": "2026-08-29",
      "evidenceType": "official-company-history",
      "rightsStatus": "metadata-only",
      "checksum": "sha256:078d73796e27ba7f67fdabcb4509dcbcd9bb40eaed42b838def31c34e64140be",
      "supports": [
        "identity:matcha",
        "observation:matcha:jade-leaf-barista-ceremonial:historical-milestone:2014"
      ]
    },
    {
      "uuid": "83c0121a-af8f-4dac-8e54-8785aa4e1bd4",
      "publicIri": "https://thefoodthatshapedus.com/food-evolution/methodology#evidence-6911505343afad80",
      "sourceUrl": "https://www.o-cha.net/english/cup/pdf/8.pdf",
      "title": "History of Tea in Japan",
      "publisher": "O-CHA NET / World Green Tea Association",
      "publicationOrObservationDate": "2025",
      "capturedAt": "2026-08-29",
      "evidenceType": "historical-source",
      "rightsStatus": "metadata-only",
      "checksum": "sha256:748c653bd230217597ade39bde6ecc64014e8f6b26b4d32f2f8e2165efc7e7e9",
      "supports": [
        "identity:matcha"
      ]
    }
  ],
  "limitations": [
    "Missing years are gaps; no unchanged price, package, formulation, ownership, or availability is inferred.",
    "Observed prices exclude tax, shipping, subscriptions, bundles, and unrecorded promotions unless the observation states otherwise.",
    "Externally owned source material is represented by metadata, links, and checksums rather than republished captures.",
    "Traditional variation is not classified as fraud merely because a commercial formula differs."
  ]
}