VDA Name Client

A client library for registering / unregistering a human readable username alias for a DID.

DID's can have multiple usernames (although the smart contract currently limits to just 1)

Dependencies

This package dependes on the following verida-js packages:

• @verida/types
• @verida/vda-common
• @verida/helpers
• @verida/vda-client-base

And dependes on the following packages for test:

• @verida/vda-common-test

Installation

yarn add @verida/vda-name-client

Usage

This library can be in read only mode where it just fetches DID's and usernames or in read and write mode where it can also register / unregister usernames.

Read Only

Setup the library in read only mode for reading usernames and DIDs:

import { VeridaNameClient } from '@verida/vda-name-client'
import { EnvironmentType } from '@verida/types'

// Create name Client
const nameClient = new VeridaNameClient({
    environment: EnvironmentType.TESTNET
})

Get usernames for a DID

const usernames = await nameClient.getUsernames(DID_ADDRESS);
console.log(usernames)

Get DID for a username

const USERNAME = 'johndoe.vda'

const did = await nameClient.getDid(USERNAME);
console.log(did)

Read and Write

In order to write to the blockchain, you will require a Polygon private key with MATIC tokens.

Setup the library in read and write mode to support the above get methods and register / unregister usernames:

import { VeridaNameClient } from '@verida/vda-name-client'
import { EnvironmentType, Web3CallType } from '@verida/types'

// DID address that controls the proof of eligibility to mint the SBT
const DID_ADDRESS = '0x...'
// DID private key that controls the proof of eligibility to mint the SBT
const DID_PRIVATE_KEY = '0x...'
// Polygon private key that will fund blockchain transactions
const POLYGON_PRIVATE_KEY = '0x...'
// How to make blockchain requests. This should be 'web3' unless using Verida's meta transaction server.
const CALL_TYPE = 'web3'
// (Optional) Polygon RPC URL (Mumbai testnet)
const RPC_URL = 'https://rpc-mumbai.maticvigil.com'

// Create name Client
const nameClient = new VeridaNameClient({
    environment: EnvironmentType.TESTNET
    callType: CALL_TYPE,
    did: DID_ADDRESS,
    signKey: DID_PRIVATE_KEY,
    web3Options: {
        rpcUrl: RPC_URL,
        privateKey: POLYGON_PRIVATE_KEY
    }
})

Register a name

const USERNAME = 'johndoe.vda'

await nameClient.register(USERNAME)

Unregister a name

const USERNAME = 'johndoe.vda'

await nameClient.unregister(USERNAME)