{
    "id": "MAC-047",
    "category": "MAC",
    "title": "加密可研究資產覆蓋",
    "question": "哪些幣的歷史足以支持可靠比較？",
    "chart": "table",
    "metric": "共同有效歷史日數（日）",
    "secondary": "首日、缺日及價格／市值完整率",
    "x": "資產",
    "y": "共同有效歷史日數（日）",
    "panels": [
        "主圖：共同有效歷史日數（日），依資產排列",
        "輔圖：首日、缺日及價格／市值完整率",
        "明細：加密可研究資產覆蓋的資料列、觀測日期與缺值狀態"
    ],
    "filters": [
        "國家／資產／貨幣",
        "資料日期與觀測頻率",
        "最低歷史及共同窗口"
    ],
    "apis": [
        "EOD",
        "MARKETCAP",
        "EXCHANGE"
    ],
    "calculation": "以CC代碼清單核對價格和市值範圍，區分新上市、長缺口及只有當前名稱的資產。",
    "caveat": "當前清單不是歷史全市場，不能證明已排除存續者偏差。 各資產需對齊貨幣、交易日與時區；宏觀修訂值不代表當時已知數據。",
    "data_class": "衍生",
    "complexity": "中",
    "audience": "專業",
    "reach": 4,
    "frequency": 5,
    "decision": 6,
    "clarity": 9,
    "sample_labels": [
        "歷史充足",
        "新資產",
        "市值不足",
        "價格有缺口"
    ],
    "cadence": "依原始資料發布頻率；市場序列日更",
    "category_name": "宏觀、外匯與加密資產",
    "score": 53.0,
    "requires_user_input": false,
    "requires_extra_plan": false,
    "source_urls": [
        "https://eodhd.com/financial-apis/api-for-historical-data-and-volumes",
        "https://eodhd.com/financial-apis/historical-market-capitalization-api",
        "https://eodhd.com/financial-apis/exchanges-api-list-of-tickers-and-trading-hours"
    ],
    "rank": 915,
    "stage": "P4",
    "svg_file": "mockups/0915-MAC-047.svg",
    "demo_fingerprint": "0643fe8adbb8e4ce",
    "collection": "catalogue",
    "sample_annotation": {
        "sample": true,
        "as_of": "2026-10-16",
        "notice": "Charts and tables for this report are generated, deterministic synthetic sample observations for educational layout and unit demonstration only. No provider, market data or analysis engine is called, and nothing here is a statement about real securities.",
        "notice_zh": "此報告的圖表與數據為確定性生成的合成示例數據，僅供教育及版面展示；並無連接任何資料供應商或實際分析引擎，不代表任何真實證券的表現。",
        "default_filters": {
            "symbol": "0700.HK",
            "period": "1Y",
            "benchmark": "HSI"
        },
        "filters": {
            "symbol": [
                "0700.HK",
                "0005.HK",
                "AAPL.US",
                "MSFT.US",
                "SPY.US",
                "BTC-USD.CC"
            ],
            "period": [
                "1Y",
                "3Y",
                "5Y"
            ],
            "benchmark": [
                "HSI",
                "SPX",
                "BTC"
            ]
        },
        "library": {
            "version": "2026-10-19",
            "source": "https://chatgpt.com/share/6ad67223-c610-83e8-adb2-33aaf792e584",
            "sample": true
        }
    }
}