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Key Derivation

Key derivation methods. 10 proposals.

BIP 32: 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: 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: 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 67: Deterministic Pay-to-script-hash multi-signature addresses through public key sorting: Complete. Specifies sorting the public keys in a multisig setup into a fixed order, so the same keys always produce the same P2SH address. Co-signers can then independently compute matching addresses without…
BIP 84: 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…
BIP 85: Deterministic Entropy From BIP32 Keychains: Deployed. Describes how to derive fresh, independent secrets, such as new seed phrases or passwords, from one master wallet seed. Users can back up a single seed yet create separate seeds for other wallets,…
BIP 86: Key Derivation for Single Key P2TR Outputs: Deployed. Defines the standard key path for HD wallets that use single-key Taproot addresses (those starting with 'bc1p'). It plays the same role for Taproot that BIP 84 does for SegWit, so seed phrases…
BIP 87: Hierarchy for Deterministic Multisig Wallets: Complete. Establishes a common key structure for multisignature wallets, where spending requires approval from several keys. Unlike earlier schemes, a single layout covers all script types, which makes it…