Hierarchical Deterministic (HD) Account
A Hierarchical Deterministic (HD) Account is derived from a HD Key and an optional HD path.
It has the ability to sign transactions and messages with the private key derived from the HD Node.
INFO
viem internally uses @scure/bip32, an audited implementation of BIP-32 HD wallets, for hierarchical deterministic (HD) wallet derivation.
Import
import { HDKey, hdKeyToAccount } from 'viem/accounts'
Note: viem re-exports
HDKeyfrom@scure/bip32.
Usage
To initialize a HD Account, you will need to pass a HDKey instance to hdKeyToAccount.
The HDKey instance comes with a few static methods to derive a HD Key:
fromMasterSeedfromExtendedKeyfromJSON
import { createWalletClient, http } from 'viem'
import { HDKey, hdKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'
const hdKey = HDKey.fromMasterSeed(...)
const hdKey = HDKey.fromExtendedKey(...)
const hdKey = HDKey.fromJSON({ xpriv: ... })
const account = hdKeyToAccount(hdKey)
const client = createWalletClient({
account,
chain: mainnet,
transport: http(),
})
Parameters
mnemonic
- Type:
string
The BIP-39 mnemonic phrase.
const account = mnemonicToAccount(
'legal winner thank year wave sausage worth useful legal winner thank yellow'
)
options.accountIndex
- Type:
number - Default:
0
The account index to use in the path ("m/44'/60'/${accountIndex}'/0/0") to derive a private key.
const account = mnemonicToAccount(
'legal winner thank year wave sausage worth useful legal winner thank yellow',
{
accountIndex: 1
}
)
options.addressIndex
- Type:
number - Default:
0
The address index to use in the path ("m/44'/60'/0'/0/${addressIndex}") to derive a private key.
const account = mnemonicToAccount(
'legal winner thank year wave sausage worth useful legal winner thank yellow',
{
accountIndex: 1,
addressIndex: 6
}
)
options.changeIndex
- Type:
number - Default:
0
The change index to use in the path ("m/44'/60'/0'/${changeIndex}/0") to derive a private key.
const account = mnemonicToAccount(
'legal winner thank year wave sausage worth useful legal winner thank yellow',
{
accountIndex: 1,
addressIndex: 6,
changeIndex: 2
}
)
options.path
- Type:
"m/44'/60'/${string}"
The HD path to use to derive a private key.
const account = mnemonicToAccount(
'legal winner thank year wave sausage worth useful legal winner thank yellow',
{
path: "m/44'/60'/5'/0/2"
}
)