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substratepolkadot-js

In Polkadot-js is there a method to create HD wallet addresses

I am using Polkadot-js api and wondered if there is an API to generate hierarchical deterministic wallet addresses from a given seed?

I see that there is some mention of soft and hard derivation paths, in Substrate's subkey documentation but do not know if this has been ported to Polkadot-js or how it could be invoked.

Solution

  • SURI are supported by Polkadot-js using createFromUri or addFromUri to create or add a new account to your keyring. You can import keyring from '@polkadot/ui-keyring' and then use it:

    keyring.createFromUri(`${phrase.trim()}${derivePath}`, {}, pairType)

    Here is the definition of the function

    edit: The derive path could be any combination of /[soft], //[hard], that can be repeated and don't have to be in this order, on top of this, you can have an additional ///[password].

    So you can pass as argument to the createFromUri function, something like:[mnemonic phrase]//Kusama//DAO/1 or [mnemonic phrase]//MyMainFunds/0///ThisIsMyPassword.