Cumulative net inflows over tracked history in USD millions. NOT inception-to-date: the upstream table is a rolling window, so metadata.coverage_from states the true start and metadata.covers_launch_epoch says whether Jan 2024 is included.
Category: calculated. Derived metrics combine multiple data sources into single indicators. These are computed server-side so you get the figure already worked out.
API: GET /api/metrics/btc-etf-cumulative-flow
Used in briefings: BTC ETF Flows
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