Nodes and miners

The Ethereum network contains different nodes. Some nodes act only as wallets, some are light clients, and a few are full clients running the full blockchain. One of the most important types of nodes is mining nodes. We will see what constitutes mining in this section.

Transactions can be found in either transaction pools or blocks. In transaction pools, they wait for verification by a node, and in blocks, they are added after successful verification. When a mining node starts its operation of verifying blocks, it starts with the highest-paying transactions in the transaction pool and executes them one by one. When the gas limit is reached, or no more transactions are left to be processed in the transaction pool, the mining starts. As a result of the mining operation, currency (ether) is awarded to the nodes that perform mining operations as an incentive for them to validate and verify blocks made up of transactions. The mining process helps secure the network...