NewExecutor creates a new executor.

Per transaction not creating a contract.

Per transaction that creates a contract.

EmptyRootHash is the root when there are no transactions.

Account is an object we can retrieve from the state.

Contract is the instance being called.

Object is the serialization of the radix object (can be merged to StateObject?).

StorageObject is an entry in the storage.

TxContext is the context of the transaction.

Txn is a reference of the state.

getHashByNumber returns the hash function of a block number.