BlackRock transfers $450M in BTC to Coinbase Prime BlackRock's IBIT just moved 5,847 BTC to Coinbase Prime, worth approximately $450 million. On-chain records show the transfer was split into multiple transactions, each with 300 BTC processed simultaneously. Coinbase Prime is a key platform for institutional custody and OTC trading. Such large transfers are typically related to ETF share preparation but could also serve other purposes. bitcoin:native