比特币地址

I. Overview.
In the (public key) section, we discussed the mechanism of public key generation, and based on the format of the private key, different forms of public keys can be generated: 'uncompressed public key' and 'compressed public key'. The public key is inherently public; can't it be used directly as an address? Why go through the trouble of converting it into an address?
There are three main reasons.
First: The public key has two forms, compressed and uncompressed, with different lengths—one is 65 bytes (1-byte prefix + 32-byte x value + 32-byte y value) and the other is 33 bytes (1-byte prefix + 32-byte x value). There may be a third or fourth format in the future, making the number of public key formats presented to the user too many, which could be confusing.