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@ -55,7 +55,7 @@ image::images/mbc2_0502.png["Deterministic Wallet"]
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[[hd_wallets]]
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==== Hierarchical Deterministic Wallets (BIP-32/BIP-44)
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Deterministic wallets were developed to make it easy to derive many keys from a single "seed." The most advanced form of deterministic wallets is the _hierarchical deterministic wallet_ or _HD wallet_ defined by the BIP-32 standard. Hierarchical deterministic wallets contain keys derived in a tree structure, such that a parent key can derive a sequence of children keys, each of which can derive a sequence of grandchildren keys, and so on, to an infinite depth. This tree structure is illustrated in <<Type2_wallet>>.
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((("wallets", "technology overview", "hierarchical deterministic (HD) wallets")))((("hierarchical deterministic (HD) wallets")))((("bitcoin improvement proposals", "Hierarchical Deterministic Wallets (BIP-32/BIP-44)")))Deterministic wallets were developed to make it easy to derive many keys from a single "seed." The most advanced form of deterministic wallets is the _hierarchical deterministic wallet_ or _HD wallet_ defined by the BIP-32 standard. Hierarchical deterministic wallets contain keys derived in a tree structure, such that a parent key can derive a sequence of children keys, each of which can derive a sequence of grandchildren keys, and so on, to an infinite depth. This tree structure is illustrated in <<Type2_wallet>>.
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[[Type2_wallet]]
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.Type-2 hierarchical deterministic wallet: a tree of keys generated from a single seed
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@ -67,7 +67,7 @@ The second advantage of HD wallets is that users can create a sequence of public
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==== Seeds and Mnemonic Codes (BIP-39)
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Hierarchical deterministic wallets are a very powerful mechanism for managing many keys and addresses. They are even more useful if they are combined with a standardized way of creating seeds from a sequence of English words that are easy to transcribe, export, and import across wallets. This is known as a _mnemonic_ and the standard is defined by BIP-39. Today, most bitcoin wallets (as well as wallets for other cryptocurrencies) use this standard and can import and export seeds for backup and recovery using interoperable mnemonics.
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((("wallets", "technology overview", "seeds and mnemonic codes")))((("mnemonic code words")))Hierarchical deterministic wallets are a very powerful mechanism for managing many keys and addresses. They are even more useful if they are combined with a standardized way of creating seeds from a sequence of English words that are easy to transcribe, export, and import across wallets. This is known as a _mnemonic_ and the standard is defined by BIP-39. Today, most bitcoin wallets (as well as wallets for other cryptocurrencies) use this standard and can import and export seeds for backup and recovery using interoperable mnemonics.
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Let's look at this from a practical perspective. Which of the following seeds is easier to transcribe, record on paper, read without error, export, and import into another wallet?
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