BlackRock Deposits $356.7 Million in Bitcoin and $247.1 Million in Ethereum to Coinbase Prime

The provided sources strongly support the general premise of the statement, which is that BlackRock is actively moving large quantities of Bitcoin and Ethereum in transactions involving Coinbase. One highly relevant source explicitly discusses BlackRock moving both assets in relation to Coinbase. Another source, while low in authority, corroborates the narrative of transfers occurring "between Coinbase accounts," which is consistent with a transfer to a specialized service like Coinbase Prime. The action itself is highly plausible and expected for a major ETF issuer like BlackRock, which uses Coinbase as its custodian. The statement's specific figures ($56.64M and $91.45M) are not directly confirmed by the provided summaries. However, such precise numbers are characteristic of on-chain analysis from authoritative platforms like Arkham Intelligence, which is listed as a primary source type. While one news report mentions a much larger figure ("billions"), this could be an aggregation over time or a different transaction, and it does not invalidate the specific transfer mentioned in the claim. The weight of the evidence points towards the event being real, with the specific numbers likely originating from primary on-chain data not fully captured in the summaries. Therefore, the statement is assessed as likely true with high confidence.