> Since no exchanges or web wallets support z-addrs, users are forced to operate mainly through t-addrs if they want to use their coins.<p>This lines puts the whole thing in perspective.<p>The other privacy oriented coin - Monero didn't have a web or GUI based wallet for a long time.<p>This whole privacy aspect provides an interesting problem - most of the exchange volumes are off chain to allow faster movement. So you send coins to the exchange, it gets added to the larger pool ie cold/hot wallet, you trade and if you cash out exchange deducts money and then you see your coins on the wallet.<p>Now the only way you are sure that exchange has the coins is by looking at the cold/hot wallet address. If not, the coins can simply be "numbers" on an exchange.<p>Privacy focused coins means there is no provable way to see if the exchanges have the coins.<p>Sure, exchanges can engage in some form of "auditing" but for that access to the whole system is required.