Jan 11 (Reuters) - Vanguard said none of the 11 exchange-traded funds (ETFs) tied to spot bitcoin will be available for purchase on the asset manager's sales platform.

A Vanguard spokeswoman said in an e-mail the firm's focus remains on core asset classes such as stocks, bonds and cash. Vanguard views these "as the blocks of a well-balanced, long-term investment portfolio."

The spokeswoman added Vanguard has no plans to join the bitcoin ETF race or to offer other crypto-related products. (Reporting by Suzanne McGee in New York and Hannah Lang in Washington)