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Deploy an Existing DApp on Telos EVM Mainnet

Considerations and coverage for launching a DApp live on the Telos mainnet.

Disclaimer: This tutorial is for those already familiar with developing smart contracts on EVM-compatible chains and using tools like Solidity, Ethers.js, and Hardhat or Truffle. If you are not versed in these tools, please visit our DApps tools section

Test Smart Contracts on Testnet​

The Telos testnet tokens can be aquired in the Testnet Faucet.

Testnet Walkthrough

Telos Testnet Settings:​

Telos Mainnet​

Telos Mainnet Settings:​

Websocket connections​

  • Testnet : wss://testnet.telos.net/evm

  • Mainnet: wss://mainnet.telos.net/evm

Audit and Optimize Smart Contracts​

Optimize the contract to ensure its safety and efficiency.

  • It is strongly recommended to review audit reports and old hacks to identify mistakes that have been made in Solidity.
  • Paid audits from firms such as Sentnl, solidity.finance, or others

Estimate Cost of Deployment​

  • Telos is an inexpensive chain to build on; transactions average $.01.
  • Gas price is currently fixed at ~500 GWEI.
  • To calculate the cost of deployment on mainnet, simply multiply gas consumed with the gas price using the Ethers library.

Acquiring TLOS for mainnet​

The easiest way to acquire the Telos native currency is through an exchange. After you purchase native Telos, you will have to bridge it over to the EVM contract by using https://wallet.telos.net/

Most Affordable Method Purchase Telos on a centralized exchange, then send it to Telos web wallet or Anchor wallet. (12 character public key aka username)

  • Go on Telos web wallet and bridge to Telos EVM.

These are the current platforms Telos is listed on

  • Kucoin
  • gate.io
  • Huobi
  • Uniswap
  • Sushiswap
  • Pancakeswap

Another way to acquire Telos EVM coins is to use a Crosschain Bridge

Configuring your Deployment script​

In order to deploy to Telos EVM you will need the following:

hardhat_project/hardhat.config.js
module.exports = {
  solidity: '0.8.1',
  networks: {
    telos_mainnet: {
      url: "https://mainnet.telos.net/evm",
      accounts: [process.env.TELOS_TESTNET_PRIVATEKEY],
    },
  },
};

As is good practice, define deployment wallet's private key in a .env file that will not be committed to git repository.

Next, run your deploy script and once complete, you will have successfully launched onto Telos mainnet.

Now run the code below.

npx hardhat run scripts/deploy.js --network telos_mainnet

To check the gas price set by Telos resources go to teloscan

When you deploy using hardhat, it automatically drains your wallet of the funds it needs to perform the request. In other words, there is no pop-up confirmation from Metamask. Once you run the deploy script command, you will be charged gas fees, and your contract will be deployed.