What Is An Xpub?
An xPub, or Extended Public Key, represents a series of Bitcoin addresses within Hierarchical Deterministic (HD) wallets. It lets users receive Bitcoin to different addresses while keeping the core private keys offline. Think of an xPub as a master key to generate multiple receiving 'postal' addresses, ensuring both security and privacy. Although sharing an xPub does not expose control of one's funds, it can compromise transactional privacy. Thus, sharing xPubs only with trusted parties is essential, as it reveals all associated transactions.