It consists of two main components: its unique identifier and a private key, which is used to access and authorize transactions.
What does unique identifier mean? If I understand you correctly, you are talking about something similar to a wallet ID, which is in the form of random letters and numbers and which works exactly like a user’s username or email in account-based systems.
If this is true, there is no difference between this wallet and blockchain.com. They both give you access to the private key, both have a trading account, and both can extract the private key and include it in any wallet.
The service you provide will be closer to a web wallet, in which the wallet code is closed source. It is true that you can extract the private key, but there is no guarantee that the service records the private key or generates it with a random entropy of more than 128 bits.
With Safe Wallet, you can buy and exchange cryptocurrencies while maintaining the complete confidentiality of your data.
This is not entirely accurate. If the exchange does not require personal data, it is either decentralized or will be closed due to non-compliance with money laundering regulations. If it is decentralized, there is not yet a decentralized exchange among different blockchains, except for wrapped tokens, which are centralized in locking and de-locking.
Challengy is an example of a service that claims that it does not request data from users (except for email) and they close accounts and request data at some point.