selectStxDerivation

Determines the correct derivation path and username for an account by looking up BNS name ownership on the network. This is used during wallet restoration to figure out whether an account's STX key was derived via the Wallet path or the Data path.

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Usage

import { selectStxDerivation } from '@stacks/wallet-sdk';
import { HDKey } from '@scure/bip32';
import { mnemonicToSeed } from '@scure/bip39';

const seed = await mnemonicToSeed('your 24-word seed phrase ...');
const rootNode = HDKey.fromMasterSeed(seed);

// With a known username
const result = await selectStxDerivation({
  username: 'myname.btc',
  rootNode,
  index: 0,
  network: 'mainnet',
});
console.log(result.stxDerivationType); // DerivationType.Wallet or DerivationType.Data

// Without a username — auto-discovers
const result2 = await selectStxDerivation({
  rootNode,
  index: 0,
  network: 'mainnet',
});
console.log(result2.username);          // discovered username or undefined
console.log(result2.stxDerivationType); // DerivationType.Wallet (default)

Notes

• If a username is provided, it looks up the name's owner address on the network and checks which derivation path matches.

• If no username is provided, it tries both derivation paths and looks up names owned by each address.

• If no network is provided, returns DerivationType.Unknown.

• Falls back to DerivationType.Wallet when no username is found.

Reference Link

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Signature

function selectStxDerivation(opts: {
  username?: string;
  rootNode: HDKey;
  index: number;
} & NetworkParam): Promise<{
  username: string | undefined;
  stxDerivationType: DerivationType;
}>;

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Returns

Promise<{ username: string | undefined; stxDerivationType: DerivationType }>

An object containing the resolved username (if any) and the derivation type that matches.

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Parameters

opts (required)

Property	Type	Required	Description
rootNode	HDKey	Yes	The root HD key derived from the wallet's seed phrase.
index	number	Yes	The account index (0-based).
username	string	No	A BNS username to look up. If omitted, the function tries to auto-discover one.
network	StacksNetworkName | StacksNetwork	No	The network to query for BNS name lookups.