In a landmark day for Bitcoin (CRYPTO: BTC) investment products, the total net inflow into Bitcoin spot exchange-traded funds (ETFs) reached an unprecedented $1.05 billion on March 12. What Happened: This surge set a new record for the highest single-day net inflow since these ETFs were first introduced to the market, marking a significant increase of approximately 56% from the $673 million net inflow recorded on Feb. 28, according to data from SoSoValue. Among the beneficiaries of this remarkable influx of capital, Blackrock’s IBIT (NASDAQ: IBIT) product stood out, capturing a record $849 mil…