On-chain intelligence platform Arkham has flagged a series of significant cryptocurrency transfers from wallets associated with asset management giant BlackRock to Coinbase Prime, the institutional arm of Coinbase. According to data circulated on Telegram and reported by outlets including Bitget and BingX, BlackRock received 2,607 BTC (worth approximately $177.56 million) and 28,391 ETH (worth about $59 million) from Coinbase Prime, putting the total reported movement above $236 million.
This alert follows a pattern of similar activity. On April 8, Arkham data relayed by BlockBeats showed BlackRock's spot Ethereum ETF (ETHA) and Bitcoin ETF (IBIT) wallets moving 8,513 ETH (~$19.14M) and 416.654 BTC (~$29.86M), respectively, into Coinbase Prime. This extends a months-long trend of the asset manager using the prime brokerage for large, ETF-related reallocations.
The reporting is based primarily on wallet labels from Arkham's entity pages for BlackRock and Coinbase Prime, and the evidence package did not include official statements from the involved firms or specific transaction hashes. However, the scale and repetition of these movements have drawn significant attention. Earlier in the year, similar Arkham data indicated a single transfer window where BlackRock moved 3,970 BTC and 82,813 ETH to Coinbase Prime, coinciding with notable ETF net outflows.
Analysts note that these flows underscore how institutional activity from spot Bitcoin and Ethereum ETFs is increasingly channeled through regulated prime brokers like Coinbase Prime, which offers segregated custody and block trading. Arkham has described such transfers as commonly preceding operational activities like ETF rebalancing, creations, or redemptions, rather than speculative trading. This on-chain trail is becoming a real-time barometer for institutional positioning in core crypto assets.
