hierchical-deterministic-keys

Definition

An HDK type is a deterministic Bitcoin wallet derived from a known seed that allows child keys to be created from the parent key. Because the child key is generated from a known seed, a relationship between the child and parent keys is invisible to anyone without that seed.

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The HD protocol (BIP 32) can generate a near-infinite number of child keys from a deterministically generated seed (chain code) from its parent, allowing you to recreate those exact same child keys as long as you have the seed.
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