As the deadline approaches for the U.S. Securities and Exchange Commission (SEC) to decide whether to approve a spot bitcoin exchange-traded fund (ETF), Coinbase (Nasdaq: COIN) says it has extensively prepared its systems to custody BTC for spot bitcoin ETF issuers. Most spot bitcoin ETF applicants have named the Nasdaq-listed crypto platform as the custodian of their bitcoin, including Blackrock, the world’s largest asset manager, Ark Invest, Bitwise, Wisdomtree, and Invesco.