BlackRock transferred 249.16 BTC worth about $15.65 million from wallets tied to its IBIT product and 301.76 ETH worth about $566,000 from wallets tied to ETHA to Coinbase Prime, according to on-chain tracker Onchain Lens. The monitoring account said the transactions took place about three hours earlier. Transfers to Coinbase Prime, an institutional prime brokerage and custody platform, are closely tracked by crypto markets because they can be associated with ETF-related creations, redemptions, custody rebalancing, or other treasury operations, though the transfer itself does not by itself confirm a sale.