The Federal Reserve published a paper that explores various privacy strategies in digital asset ecosystems. A key point is that cash like anonymity is very unlikely in digital systems. Confidentiality from certain parties is the best to hope for.
It asserts the desire for cash-like anonymity is based on a misunderstanding of how digital systems work. Even with encryption, activity logs and audit trails leak small pieces of information. Of course, current versions of most public blockchains reveal an enormous amount of data which is easy to link to an identity by tracing wallets back to exchange onramps.
Although it may be true that anonymity is almost impossible to achieve in the digital realm, people desire it. While comparing digital systems to cash at a practical level, the paper doesn’t acknowledge the broad recognition that digital money will accelerate the crowding out of cash.
Hellbound and Down 