METHODOLOGY & PROVENANCE
Every number should be reproducible.
BTC, ETH, and XRP price, market capitalization, and reported spot volume use Coin Metrics Community API metrics PriceUSD, CapMrktCurUSD, and volume_reported_spot_usd_1d at the 1-day UTC frequency. Coin Metrics aggregation and supply methodology can differ from CoinGecko and other providers. Canonical observations retain provider, retrieval timestamp, payload hash, import run, revision, and quality flags; derived values use deterministic market-v2 calculations. Event-window returns and 1-, 3-, 7-, and 30-day abnormal returns use total crypto market performance as the benchmark.