Bitcoin transactions are verified by network nodes through cryptography and recorded on the blockchain. When someone sends Bitcoin, the transaction is broadcast to the network and included in a block that is added to the blockchain. Miners, who are participants in the network, use powerful computers to solve complex mathematical problems to validate transactions and secure the network. For their efforts, miners are rewarded with newly created Bitcoins.

You can buy Bitcoin from cryptocurrency exchanges, peer-to-peer platforms, or Bitcoin ATMs. To purchase Bitcoin, you need to create an account on an exchange, verify your identity, deposit funds, and place an order to buy Bitcoin. Popular exchanges include Coinbase, Binance, and Kraken. Always ensure you use reputable platforms and secure your account with strong passwords and two-factor authentication.

Bitcoin can be stored in digital wallets, which come in various forms such as hardware wallets, software wallets, mobile wallets, and paper wallets. Hardware wallets like Ledger and Trezor are considered the most secure as they store your private keys offline. Software and mobile wallets, such as Electrum and Mycelium, offer convenience for frequent transactions. Paper wallets, which involve printing your private keys and addresses on paper, are another secure option but require careful handling to avoid loss or damage.

Bitcoin is secure due to its decentralized nature and the cryptographic principles that underpin its blockchain technology. Each transaction is verified by network nodes and recorded on the blockchain, making it nearly impossible to alter past transactions. However, the security of your Bitcoin holdings depends on how well you protect your private keys. Using secure wallets and practicing good security hygiene, such as enabling two-factor authentication and regularly updating your software, can help protect your Bitcoin.