tokens appearing in the wallet can be ported from one account to the other

with the use of accounts made by Ethereum.

The following figure shows the Ethereum transactions:

Figure 4.3: Ethereum transactions

A network of several computers is involved in the process when a program

is used in Ethereum. The bytecode refers to the smart contracts that have

been written in a specific programming language and put together, enabling

the Ethereum Virtual Machine (EVM) to read and execute the bytecode.

The architecture of Ethereum is shown in the following figure: