Your questions about SoFi Hong Kong are answered here

A VA ETF (e.g. Crypto ETF) is an exchange-traded fund that seeks to replicate or track the price performance of one or more underlying virtual assets (e.g., Bitcoin or Ethereum).

• A VA ETF may hold the underlying Virtual Assets directly, through regulated custodians, or via other permitted structures.
• You benefit from price movements of the spot VA market.
• Like traditional ETF, VA ETF is listed and traded on exchanges. It allows investors to indirectly invest in the highly volatile virtual asset market through traditional securities accounts, without the need to open their own virtual asset wallets or deal with complex custodial issues.