Premise: I’m still learning here so I apologize if my question is too basic.
Let's suppose that someone is developing a digital market for equity shares using blockchain (because it could save huge costs to the whole banking industry by removing the need for big Back-office departments).
Question #1: The equity shares would (probably) be represented by ERC-20 token contracts on the Ethereum blockchain, right?
Question #1.1: ERC-721 (Non-Fungible Tokens) cannot be used because one equity token is fungible with another equity token issued by the same company, right?
Question #2: Using ERC-20, would the tokens issued by each different company have a different name and symbol? For instance, Apple tokens would be "AAPL", Google tokens would be "GOOGL", Coca-Cola tokens would be "KO" and so on... Right?
Question #3: If indeed each company has a different token, how does a user on a block explorer or other trading platform know that AAPL, GOOGL, KO all represent equity shares in some company and not some cryptocurrency or some utility token? In other terms, how do I know that AAPL, GOOGL and KO belong to the same asset class?
Question #4: If I'm correct (that it's not possible to distinguish different types of tokens on a same block explorer), then does it mean that a separate platform needs to be created for the exclusive trade of AAPL, GOOGL, KO and other equity tokens?