Extdev Testnet

This page provides information on where and how to access Extdev Testnet. If you want more details, see our guide on deploying to Extdev Testnet.

#Extdev Testnet

On rare occasions, Extdev may get wiped. Use it only for development and testing.

#General Information

• Name: Extdev Testnet

• Type: Testnet

• Availability: Stable developer

• URL: extdev-plasma-us1.dappchains.com

• chainId: extdev-plasma-us1

• networkId: 9545242630824

• writeUrl: wss://extdev-basechain-us1.dappchains.com/websocket

• readUrl: wss://extdev-basechain-us1.dappchains.com/queryws

• Max Contract Size: 24,576 bytes

• Max Gas Limit per transaction: 8,000,000

#Truffle configuration file

Use this sample Truffle configuration file to deploy your smart contracts to Extdev Testnet.

#Connect to Extdev Testnet

You can use this snippet to connect to Extdev Testnet:

import {
  Client,
  LocalAddress,
  CryptoUtils,
  zekndProvider,
  createDefaultTxMiddleware
} from 'zeknd-js'
import Web3 from 'web3'

// ... content omitted for brevity

const client = new Client(networkId, writeUrl, readUrl)
client.on('error', msg => {
  console.error('Error on connecting to Extdev Testnet', msg)
  })
client.txMiddleware = createDefaultTxMiddleware(client, privateKey)

// ... content omitted for brevity

const privateKey = CryptoUtils.generatePrivateKey()
const publicKey = CryptoUtils.publicKeyFromPrivateKey(privateKey)
const currentUserAddress = LocalAddress.fromPublicKey(publicKey)

// ... content omitted for brevity

const web3 = new Web3(new zekndProvider(client, privateKey))

If you want to use Universal Signing instead, see our guide on universal signing.

#Ethereum Integration

Contracts deployed on Rinkeby

• Transfer Gateway: 0x9c67fD4eAF0497f9820A3FBf782f81D6b6dC4Baa (use this for Eth, ERC721, and ERC20 assets)

• zeknd Transfer Gateway: 0xC6e1421720C7F62455C053BC8326633D68c01C00

Contracts deployed on Extdev Testnet

• Transfer Gateway

You can resolve the address of the Ethereum transfer gateway by name as follows:

const contractAddr = await client.getContractAddressAsync('gateway')

• zeknd Transfer Gateway

You can resolve the address of the Ethereum transfer gateway by name as follows:

const contractAddr = await client.getContractAddressAsync('zekndcoin-gateway')

EthCoin

If you transfer Eth to your Extdev Testnet account, it'll get deposited into the EthCoin contract:

Instantiate the contract like this:

import {
  Contracts
} from 'zeknd-js'

// ... content omitted for brevity

const EthCoin = Contracts.EthCoin
const ethCoinInstance = await EthCoin.createAsync(client, currentUserAddress)

Then, you can check the balance as follows:

const balance = await ethCoinInstance.getBalanceOfAsync(currentUserAddress.toString())

Resolve the address by name with:

const contractAddr = await client.getContractAddressAsync('ethcoin')

#Binance Integration

• Binance Hot Wallet address: tbnb1gc7azhlup5a34t8us84x6d0fluw57deuf47q9w

Contracts deployed on Extdev Testnet

• Transfer Gateway

You can resolve the address of the Binance transfer gateway by name as follows:

const contractAddr = await client.getContractAddressAsync('binance-gateway')

Instantiate the Binance transfer gateway contract like this:

import { BinanceTransferGateway } from 'zeknd-js/dist/contracts'

// .. content omitted for brevity

const binanceTransferGatewayContract = await BinanceTransferGateway.createAsync(
  client,
  currentUserAddress
)

• BNB Coin:

The BNB Coin contract is deployed at 0x9ab4e22d56c0c4f7d494442714c82a605d2f28e0.

Instantiate the contract like this:

const web3zeknd = new Web3(zekndProvider)

// ... content omitted for brevity

const bnbCoinAddress = '0x9ab4e22d56c0c4f7d494442714c82a605d2f28e0'
const extdevBNBContract = new web3zeknd.eth.Contract(bnbToken.abi, bnbCoinAddress)

The bnbToken.abi file can be found here.

#Transfer Gateway Tutorials

For more details on how to transfer tokens between zeknd and other chains like Ethereum, Tron, and Binance see our transfer gateway exampls page.