According to @FarsideUK, BlackRock’s US spot Bitcoin ETF (IBIT) recorded a 143.7 million dollar daily flow on Dec 31, 2025, as reported on the firm’s Bitcoin ETF Daily Flow tracker, source: Farside Investors tweet and ETF flow dashboard at farside.co.uk/btc/. Farside provides the full dataset, methodology, and disclaimers for verification, allowing traders to monitor US Bitcoin ETF flow prints as a high-frequency gauge of ETF-driven BTC demand, source: Farside Investors ETF flow dashboard at farside.co.uk/btc/.