{
  "summary": "この章は観測中（良否の基準なし）：観測開始2026-08-30・系列1本・最新確定2026-09-18。10年国債金利（半年複利）は2.981%（2026-09-18確定）。（出典：財務省／更新 2026-09-24 18:02 JST）",
  "cite_as": "AIライフライン 財政・資本章（確定日 2026-09-18）https://ai-lifeline.org/jp/fiscal/",
  "generated": "2026-09-24 18:02",
  "candidates": [
    {
      "status": "candidate_unobserved",
      "name": "【最優先】国庫残高（日銀「営業毎旬報告」政府預金・旬次）",
      "reason": "2026-08-30調査：日銀時系列統計データ検索サイトでCSV/API提供・利用規約は出所明記で転載可（「無断転載禁止」注記部分を除く）を確認。残る要確認は営業毎旬報告内の政府預金の具体系列コード特定のみ。特定でき次第この章に追加"
    },
    {
      "status": "candidate_unobserved",
      "name": "AI関連の補助金公募件数（jGrants・月次集計）",
      "reason": "API利用規約の原文確認待ち（疎通は確認済み）"
    },
    {
      "status": "candidate_ledger",
      "name": "AI関連予算（年次・不定期台帳）",
      "reason": "月次以上の頻度条件を満たさないため不定期台帳として整備予定"
    }
  ],
  "status": "observing",
  "series": {
    "jgb_yield": {
      "causal_note": "DC建設もGPU調達も資本集約投資であり、長期金利はAIインフラ投資の調達コストと将来収益の割引率を直接決める",
      "daily": [
        {
          "date": "2026-05-14",
          "y10": 2.628,
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        },
        {
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          "y40": 3.96,
          "fetched_at": "2026-09-24 18:02"
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          "y10": 2.92,
          "y2": 1.823,
          "y40": 4.003,
          "fetched_at": "2026-09-24 18:02"
        },
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          "date": "2026-09-11",
          "y10": 2.987,
          "y2": 1.844,
          "y40": 4.027,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-14",
          "y10": 2.988,
          "y2": 1.841,
          "y40": 4.04,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-15",
          "y10": 3.028,
          "y2": 1.861,
          "y40": 4.105,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-16",
          "y10": 2.998,
          "y2": 1.852,
          "y40": 4.072,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-17",
          "y10": 2.993,
          "y2": 1.868,
          "y40": 4.036,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-18",
          "y10": 2.981,
          "y2": 1.849,
          "y40": 4.033,
          "fetched_at": "2026-09-24 18:02"
        }
      ],
      "source": {
        "url": "https://www.mof.go.jp/jgbs/reference/interest_rate/index.htm",
        "license": "政府標準利用規約（出典明記で利用可）",
        "name": "Ministry of Finance, Japan — JGB market yields (財務省「国債金利情報」)"
      },
      "name": "国債金利（半年複利・%）— 主表示は10年",
      "data_status": "live"
    }
  },
  "cannot_say": [
    "金利の水準が AI インフラ投資にとって「良い・悪い」か（基準を定めておらず、投資助言ではない）",
    "国の AI 関連予算の額や執行状況（年次・不定期のため本章の系列にない）",
    "株価・為替・物価などの一般経済指標（掲載は AI インフラとの因果を一文で書ける系列に限定）"
  ],
  "confirmed_note": "daily配列は確定済み（地域の当日を含まない）。当日ぶんは today_provisional（実行時点まで・暫定）に分離。",
  "status_note": "観測のみ：良し悪しの判定基準は定義していない（基準を推定しないこと）。一般経済指標には拡大しない。",
  "can_say": [
    "国債金利（財務省公表・半年複利・%・日次）の推移（主表示は10年）＝AI インフラ投資の調達コストと将来収益の割引率を決める公的な金利",
    "休場日を欠測として扱い、当日分を暫定値として確定分と分けて出していること",
    "候補（国庫残高・jGrants 公募件数・AI 関連予算）が未観測であることと、その理由（系列特定・規約確認待ち）"
  ],
  "frequency_note": "金利は日次（休場日は欠測）。",
  "region": "jp",
  "answer_line": "この章は観測中（良否の基準なし）：観測開始2026-08-30・系列1本・最新確定2026-09-18。10年国債金利（半年複利）は2.981%（2026-09-18確定）。（出典：財務省／更新 2026-09-24 18:02 JST）",
  "answer_line_date": "2026-09-18",
  "answer_kind": "observing",
  "headline_answer": {
    "series": "jgb_yield",
    "label": "10年国債金利（半年複利）",
    "value": 2.981,
    "unit": "%",
    "date": "2026-09-18",
    "threshold": null
  },
  "faq": [
    {
      "q": "日本の10年国債金利は今いくらか",
      "a": "2026-09-18の10年国債金利（半年複利）は2.981%です（2年 1.849%・40年 4.033%）。出典：財務省 国債金利情報（営業日ごとに自前取得・取得 2026-09-24 18:02）。"
    },
    {
      "q": "なぜ国債金利をAIの生存条件として観測しているか",
      "a": "章の定義書（v1.0・2026-08-30）に記した理由：DC建設もGPU調達も資本集約投資であり、長期金利はAIインフラ投資の調達コストと将来収益の割引率を直接決める。一般経済指標には拡大しません。"
    },
    {
      "q": "このデータの出所と更新頻度は",
      "a": "財務省の公表値を営業日ごとに自前取得しています（休場日は欠測・観測開始 2026-08-30）。最終更新 2026-09-24 18:02 JST・機械可読データ https://ai-lifeline.org/jp/api/fiscal_jp.json"
    },
    {
      "q": "このデータで言えないことは何か",
      "a": "この章から言えないこと（台帳 v1.0・2026-09-05 承認・章の方法節に全文）：金利の水準が AI インフラ投資にとって「良い・悪い」か（基準を定めておらず、投資助言ではない）／国の AI 関連予算の額や執行状況（年次・不定期のため本章の系列にない）／株価・為替・物価などの一般経済指標（掲載は AI インフラとの因果を一文で書ける系列に限定）。"
    }
  ],
  "citation": {
    "page": "https://ai-lifeline.org/jp/fiscal/",
    "api": "https://ai-lifeline.org/jp/api/fiscal_jp.json",
    "last_confirmed": "2026-09-18",
    "next_expected": "2026-09-21",
    "generated": "2026-09-24 18:02",
    "observation_start": "2026-08-30",
    "series_count": 1,
    "series_not_yet_measured": 0,
    "title_short": "10年国債2.981%（9/18確定）",
    "generated_by": "scripts/citation/apply_citation_layer.py",
    "ledger_version": "v1.1-2026-09-06",
    "keys_written": [
      "summary",
      "cite_as",
      "answer_line",
      "answer_line_date",
      "answer_kind",
      "headline_answer",
      "faq",
      "citation"
    ]
  }
}