{
  "dataset": "apple-giftcard-kaitori-rate-history-all",
  "title": "アップルギフトカード買取率の推移（記録している全サイト）",
  "source": "ギフトカード総研 (kaitoringo.com)",
  "credit": "ギフトカード総研調べ",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "homepage": "https://kaitoringo.com/datasets/",
  "citationPolicy": "出典（ギフトカード総研調べ / kaitoringo.com）を明記のうえ引用・参照を歓迎します。",
  "unit": "percent",
  "definition": "当サイトが推移を記録しているアップルギフトカード買取サイトの、ベース換金率（初回買取率）の日ごとの最小・最大・最後の値。",
  "basisNote": "ベース率＝LINE登録・友だち追加・キャンペーンの上乗せを含まない、誰でも受けられる率。",
  "brand": "Apple Gift Card",
  "series": {
    "core9": {
      "label": "比較表の9サイト",
      "siteCount": 9,
      "granularity": "1時間ごとの値",
      "since": "2026-07-15",
      "source": "https://kaitoringo.com/data/history.json"
    },
    "group21": {
      "label": "グループ計測",
      "siteCount": 21,
      "granularity": "1日ごとの値",
      "since": "2026-08-25",
      "source": "https://kaitoringo.com/data/group_rates.json"
    }
  },
  "doNotMix": "2つの系統は母集団も取得の間隔も違う。全体をまとめて平均しないこと。平均を出す場合は series ごとに分けること。",
  "siteCount": 30,
  "dayCount": 50,
  "asOf": "2026-09-02T23:07:01+09:00",
  "fields": {
    "series": "どちらの系統で測ったか（core9 / group21）",
    "key": "サイトの識別子（/sites/<key>/ に対応）",
    "name": "サイト名",
    "daily[].d": "記録日（JST）",
    "daily[].min": "その日の最小値（％）",
    "daily[].max": "その日の最大値（％）",
    "daily[].last": "その日の最後に確認した値（％）"
  },
  "notes": [
    "記録していないサイトは入っていない。台帳に載せている買取サイトのすべてではない。",
    "系列の識別子・電話番号・ドメイン登録日は配布に含めない。"
  ],
  "sites": [
    {
      "series": "core9",
      "key": "gifchan",
      "name": "ギフトチェンジ",
      "daily": [
        {
          "d": "2026-07-15",
          "min": 90.5,
          "max": 90.5,
          "last": 90.5
        },
        {
          "d": "2026-07-16",
          "min": 90.5,
          "max": 90.5,
          "last": 90.5
        },
        {
          "d": "2026-07-17",
          "min": 90.5,
          "max": 90.5,
          "last": 90.5
        },
        {
          "d": "2026-07-18",
          "min": 86.5,
          "max": 90.5,
          "last": 86.5
        },
        {
          "d": "2026-07-19",
          "min": 86.5,
          "max": 86.5,
          "last": 86.5
        },
        {
          "d": "2026-07-20",
          "min": 86.5,
          "max": 86.5,
          "last": 86.5
        },
        {
          "d": "2026-07-21",
          "min": 86.5,
          "max": 86.5,
          "last": 86.5
        },
        {
          "d": "2026-07-22",
          "min": 86.5,
          "max": 94.5,
          "last": 94.5
        },
        {
          "d": "2026-07-23",
          "min": 89.5,
          "max": 94.5,
          "last": 89.5
        },
        {
          "d": "2026-07-24",
          "min": 89.5,
          "max": 89.5,
          "last": 89.5
        },
        {
          "d": "2026-07-25",
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          "max": 89.5,
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        },
        {
          "d": "2026-07-26",
          "min": 89.5,
          "max": 89.5,
          "last": 89.5
        },
        {
          "d": "2026-07-27",
          "min": 87.5,
          "max": 92.5,
          "last": 87.5
        },
        {
          "d": "2026-07-28",
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        {
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        {
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        {
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      ]
    },
    {
      "series": "core9",
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      "name": "買取ベイビー",
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        {
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        {
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    },
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