The fervor surrounding Bitcoin continues as US Bitcoin (BTC) spot Exchange Traded Funds (ETFs) have achieved a significant milestone. According to data reported by Unfolded, citing Yahoo Finance, these ETFs have surpassed a cumulative trading volume of $1 trillion. This impressive feat was accomplished just 18 months after their initial launch, highlighting the growing institutional and retail interest in accessing Bitcoin through regulated investment vehicles. The availability of spot ETFs has provided a more accessible and potentially less volatile avenue for investors to gain exposure to the leading cryptocurrency. This milestone signals a maturing market and increased adoption of Bitcoin within mainstream finance. ```