Complex sentence: Bitcoins are created by a process called mining, in which computer network participants, i.e. users who provide their computing power, verify and record payments into a public ledger in exchange for transaction fees and newly minted bitcoins.
Split into simpler sentences: Bitcoins are created as a reward for payment processing work in which users who offer their computing power verify and record payments into a public ledger. Called mining, individuals engage in this activity in exchange for transaction fees and newly minted bitcoins.