EVM compatible networks

How to integrate with D'CENT wallet for dapps on EVM compatible networks.

D'CENT mobile app's in-app browser injects window.ethereum as a provider. If your dapp is based on EVM compatible network, you can interact with D'CENT wallet through window.ethereum provider.

Supported Networks

The following is the D'CENT in-app browser's supported network list which can use window.ethereum provider. Additional networks (https://chainid.network/) will be added to this list in the future.

Chain ID	Network
1	Ethereum Mainnet
3	Ethereum Testnet Ropsten
4	Ethereum Testnet Rinkeby
5	Ethereum Testnet Goerli
42	Ethereum Testnet Kovan
56	Binance Smart Chain Mainnet
97	Binance Smart Chain Testnet
137	Polygon (previously Matic) Mainnet
80001	Polygon Testnet Mumbai
30	RSK Mainnet
31	RSK Testnet
14	Flare Network
16	Flare Testnet Coston
19	Songbird Mainnet
128	HECO Chain Mainnet
100	Gnosis Chain (prev. xDai Chain) Mainnet
250	Fantom Mainnet Opera
50	XinFin Network Mainnet
42220	Celo Mainnet
321	KCC Mainnet
43114	Avalanche C-Chain Mainnet
42161	Arbitrum
421611	Arbitrum Testnet Rinkeby
288	BOBA L2
66	OEC
10	Optimism Mainnet
11	Metadium Mainnit
12	Metadium Testnet
246	EWC (Energy Web Token) Mainnet
1666600000	Harmony Mainnet
1666700000	Harmony Testnet
2017	Orbit Chain Mainnet
25	Cronos Chain
8217	Klaytn (EVM) Mainnet
7518	MEVerse
8453	BASE
84531	BASE Goerli (Testnet)
11155111	Etherum Sepolia (Testnet)
255	Kroma
2358	Kroma Sepolia (Testnet)
592	Astar (EVM)

How to Switch the Network

By clicking the "network" icon on the right top corner of "discovery" tab, you can switch the blockchain network for dapp browser.

For more details, please see D'CENT user guide.

• Switch Network User Guide : https://userguide.dcentwallet.com/native-service/dapp-browser/switch-blockchain-network

If your dapp is already integrated with MetaMask

D'CENT wallet's provider uses EIP-1193 & EIP-1102 interface.

• EIP-1193 Ethereum Provider JavaScript API : https://eips.ethereum.org/EIPS/eip-1193

• EIP-1102 : https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1102.md

MetaMask also uses the same provider interface (not exactly the same, but almost the same). This means if your dapp is already integrated with MetaMask, it's very easy to integrate with D'CENT wallet.

For your reference, you can also find the MetaMask's developer guide in the link below.

• MetaMask Developer Guide : https://docs.metamask.io/

How to detect in-app browser

In order to check if your dapp running on EVM networks is supported by the dapp-browser, you need to check whether window.ethereum is defined.

if (typeof window.ethereum !== 'undefined') {
    console.log("It's in-app browser");
}

How to check D'CENT provider

Most of dapp browsers for EVM networks use the same interface window.ethereum. You can check whether the dapp browser is D'CENT wallet's in-app browser with the following code.

if (window.ethereum.isDcentWallet === true) {
    console.log("It's D'CENT wallet's in-app browser")
}

Connect to Wallet

You can use the following code in order to connect to D'CENT wallet's account.

ethereum.request({ method: 'eth_requestAccounts' })

You can also use the old style code.

ethereum.enable()

Wallet Connection UI

If the connection to wallet is requested, you can see the popup like below.

Get the current network

To get the current network ID, you can use the following code.

ethereum.request({ method: 'net_version' })

You can also use the old style code.

ethereum.networkVersion

Get the current account's address

To get the address of the current account, you can use the following code.

ethereum.request({ method: 'eth_accounts' })

Send Transaction

By using ethereum.request method to call eth_sendTransaction, you can send the transaction. The following is the example code to show how to send the transaction.

const transactionParameters = {
  nonce: '0x00', // ignored
  gasPrice: '0x9184e72a000', // customizable by user
  gas: '0x76c0', // customizable by user
  to: '0x0000000000000000000000000000000000000000',
  from: '0xb60e8dd61c5d32be8058bb8eb970870f07233154', // current account's address
  value: '0x9184e72a',
  data: '0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675',
};

const txHash = await ethereum.request({
  method: 'eth_sendTransaction',
  params: [transactionParameters],
});