Source 1 directly states, 'BlackRock's iShares Ethereum Trust sold about 19,500 ETH valued at up to $87 million.' This strongly corroborates the key elements of the statement. The quantity and entity match, and the valuation is within a reasonable range, with discrepancies likely due to price fluctuations. While other sources do not confirm this specific transaction, they establish that BlackRock operates an Ethereum ETF, for which such sales are a standard operational activity.