Bitcoin transactions are verified by miners, who use powerful computers to solve complex mathematical puzzles. This process, known as “mining,” is how new Bitcoins are created and how transactions are securely processed and verified on the Bitcoin network.

Miners are rewarded for their efforts with Bitcoin, which provides an incentive for them to continue to use their computing power to process and verify transactions on the network. The difficulty of the puzzles that miners must solve to verify transactions increases over time, which helps to ensure that the Bitcoin network remains secure and reliable.