NIGHT: Correlation to BTC (7D)
7-day correlation of NIGHT and BTC hourly returns.
Why use it. Shows whether NIGHT moves with Bitcoin. How to read it. Near 1 they move together; near 0 independently.
Calculation. Pearson correlation of hourly log returns over the last 7 days, from CryptoKeyhole's NIGHT and BTC indexes. CryptoKeyhole's own hourly NIGHT/USD index from public exchange candles, from 9 December 2025. In the last 30 days it drew on the markets of Binance, Bybit, Kraken, KuCoin and OKX.