Derivation Path

A derivation path is the sequence of indexes that tells a hierarchical deterministic wallet how to generate a specific key pair from a single master seed. Written in a form like m/84'/0'/0'/0/0, it works like a file path through a tree of keys. Standards such as BIP 44, BIP 49, and BIP 84 assign fixed path patterns to different Bitcoin address types.

Why it matters

Derivation paths are what make one seed phrase able to back up an entire wallet. Because every key is derived deterministically from the seed along known paths, a user who restores 12 or 24 words on new hardware recovers every address and balance, including addresses generated after the backup was made.

They also matter in recovery emergencies. A wallet restored with the wrong path can show a zero balance even though the funds are safe on chain, one of the most common sources of panic among bitcoin holders. Knowing which standard the original wallet used, such as BIP 84 for native segwit addresses, resolves it.

How it works

Each number in the path is a child key index fed into a one-way derivation function defined by BIP 32. An apostrophe marks hardened derivation, which prevents a leaked child key plus a parent public key from exposing the rest of the tree. The conventional levels encode purpose, coin type, account, change, and address index, so m/84'/0'/0'/0/5 is the sixth receiving address of the first account of a native segwit Bitcoin wallet.