Extended Public Key (xpub)
wallet · hd-wallet
A BIP32 extended public key that derives many child public keys and addresses without revealing private keys.
An xpub contains public key and chain code data for a wallet branch. It lets software generate receiving addresses and monitor transactions without holding the corresponding private keys.
An xpub cannot spend funds, but it can reveal wallet structure and link many addresses together. It should be shared only with services that need that visibility.
Related terms
Derivation Path
→A notation that selects a branch and key within a hierarchical deterministic wallet.
wallet · security
Wallet
→Software or hardware that manages signing credentials, addresses, transactions, and access to blockchain assets.
wallet · security
Public Key
→Cryptographic data used to verify signatures made by the corresponding private key.
cryptography · technical
Multi-Signature (multisig)
→A spending policy that requires a defined threshold of several keys or signers.
security · wallet