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HD Wallets BIPs

Hierarchical Deterministic wallets. 6 proposals.

• BIP 32 (HD wallets): Hierarchical Deterministic Wallets: Deployed. Defines hierarchical deterministic (HD) wallets, in which a single seed generates a whole tree of keys. Users can back up a wallet once and share watch-only parts, for example with a shop or…
• BIP 43: Purpose Field for Deterministic Wallets: Deployed. Reserves the first level of an HD wallet's key tree for a "purpose" number that says which layout the rest of the tree follows. This lets different wallet standards coexist and helps software…
• BIP 44 (BIP44 derivation path): Multi-Account Hierarchy for Deterministic Wallets: Deployed. Defines a standard layout for HD wallets that organizes keys by coin type, account, and receiving versus change addresses. Because wallets share this layout, a recovery phrase from one wallet can…
• BIP 45: Structure for Deterministic P2SH Multisignature Wallets: Complete. Defines a key structure for HD wallets shared among several co-signers using P2SH multisig. It lets each participant independently generate the same series of shared addresses without exchanging new…
• BIP 49 (nested SegWit derivation): Derivation scheme for P2WPKH-nested-in-P2SH based accounts: Deployed. Defines how HD wallets derive keys for SegWit addresses wrapped inside P2SH, which begin with "3". This let wallets offer cheaper SegWit transactions while staying payable from older software that…
• BIP 84 (native SegWit derivation): Derivation scheme for P2WPKH based accounts: Deployed. Specifies the standard key path for HD wallets that use native SegWit addresses (those starting with 'bc1q'). Agreeing on this path means a user can restore the same seed phrase in different wallet…