A Bitcoin address is a unique string of characters that represents the destination of a Bitcoin payment. It is similar to an email address, but instead of being used to send and receive messages, a Bitcoin address is used to send and receive payments on the Bitcoin network. A Bitcoin address can be shared publicly, and anyone who knows the address can send payments to it. It is important to keep your Bitcoin address private and secure, as anyone who has access to your address can potentially steal your funds. Bitcoin addresses are typically generated by a wallet software and are composed of a string of letters and numbers. They typically begin with the number "1", or "3", or “bc1” (defined by BIP44, BIP49, and BIP84 accordingly).