What is the main idea of Bitcoin?

The main idea behind Bitcoin is to create a decentralized digital currency that operates on a peer-to-peer network, allowing individuals to make secure and direct transactions without the need for intermediaries like banks. Bitcoin uses a blockchain to record transactions, ensuring transparency, immutability, and security. Additionally, it employs a consensus algorithm called proof-of-work to validate and secure transactions through a process known as mining. Overall, Bitcoin aims to provide a decentralized and trustless system for transferring value.