📃KLY-EVM - deploy and interact with the smart-contract to EVM

Intro

The Klyntar platform has support for an improved version of the EVM and has been tested up to Solidity v0.8.17

So, in your contracts you can put something like this:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

What to remember

Since the Klyntar network has multilevel sharding - in the RPC endpoint URL you need to specify a URL of a special form:

const web3 = new Web3('http://localhost:7332/kly_evm_rpc/shard_0')

In case you use Node-as-a-Service RPC providers - they may have their own URL format - follow their instructions

Code snippet

For the procedure of deploying a smart contract to the Klyntar network, you can use publicly available examples of the web3 library from Ethereum

import {Transaction} from '@ethereumjs/tx'
import {Common} from '@ethereumjs/common'
import Web3 from 'web3'


const web3 = new Web3('http://localhost:7332/kly_evm_rpc/shard_0')

// KLY-EVM
const common = Common.custom({name:'KLYNTAR',networkId:'0x1CA3',chainId:'0x1CA3'},{hardfork:'london'})

// EVM account

const evmAccount0 = {

    address:'0x4741c39e6096c192Db6E1375Ff32526512069dF5',
    privateKey:Buffer.from('d86dd54fd92f7c638668b1847aa3928f213db09ccda19f1a5f2badeae50cb93e','hex')

}

const BYTECODE_TO_DEPLOY = '<take this code from Remix or other development env>'

web3.eth.getTransactionCount(evmAccount0.address,async(err,txCount)=>{
			
    if(err) return

    // Build a transaction
    let txObject = {

        from:evmAccount0.address,

        nonce:web3.utils.toHex(txCount),
    
        //Set enough limit and price for gas
        gasLimit: web3.utils.toHex(800000),
    
        gasPrice: web3.utils.toHex(web3.utils.toWei('10','gwei')),
            
        //Set contract bytecode
        data:`0x${BYTECODE_TO_DEPLOY}`

    }


    // Choose custom network
    let tx = Transaction.fromTxData(txObject,{common}).sign(evmAccount0.privateKey)

    let raw = '0x' + tx.serialize().toString('hex')

    // Broadcast the transaction
    web3.eth.sendSignedTransaction(raw, (err, txHash) => console.log(err?`Oops,some has been occured ${err}`:`Success ———> ${txHash}`))

})

This will create the contract on shard_0:

Success ———> 0xf6d675170210c7c01df88da5bcf844a791806efb35e01d576c1e13bd0f803036

Check the explorer

You should see something like this:

And if you visit the page of newly created contract: