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    "title": "Institutional Crypto Flows — Bitcoin ETF Tracker",
    "description": "Track institutional Bitcoin flows from public data. Daily ETF inflows/outflows per fund (IBIT, FBTC, ARKB, BITB, BTCO, etc.), 7d/30d cumulative flows, flow trend, market signal, and net institutional sentiment. Fallback to corporate BTC treasury data. No API key required.",
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