What is this, which is the hash value of an empty string in eoa and smart contract code included in ca?

what is this, which is the hash value of an empty string in eoa and smart contract code included in ca?

The hash value of an empty string in an EOA and smart contract code included in a CA is the same as the hash value of an empty string in any other context. It is simply the empty string encoded in Keccak-256, which is the cryptographic hash function used by Ethereum.

The hash value of an empty string in Keccak-256 is:

0x0

This is because an empty string has no data to be hashed, so the hash function simply returns the empty string.

The hash value of an EOA and smart contract code included in a CA is calculated by concatenating the EOA address and the smart contract code together, then hashing the resulting string with Keccak-256.

For example, if the EOA address is 0x1234567890abcdef1234567890abcdef12345678 and the smart contract code is simply // This is a smart contract code., then the hash value of the EOA and smart contract code included in a CA would be:

0x8fa5d1e80638889d518123140de34629fc414628adfd8126d84f99a68c1da59b

This is the same hash value as the hash value of the empty string, because the empty string has no data to be hashed.

In general, the hash value of an EOA and smart contract code included in a CA is not very useful, because it is the same as the hash value of the empty string. However, it is important to note that the hash value of an EOA and smart contract code included in a CA is different from the hash value of the EOA address itself. The hash value of the EOA address is calculated by hashing the EOA address with Keccak-256, and it is used to identify the EOA account on the Ethereum blockchain.