Cant verify my contract on BSCScan

Support Contracts
1

hi i want to verify my contract on bscscan but i keep getting this error:

ParserError: Source “@openzeppelin/contracts/token/ERC20/ERC20.sol” not found: File import callback not supported
→ myc:5:1:
|
5 | import “@openzeppelin/contracts/token/ERC20/ERC20.sol”
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

i tried to verify it with truffle but i cant get it working, i tried it on linux and on my own pc “windows” can someone help me with this?

:computer: Environment
the environment i am using is remix

2

Sorry, I am not familiar with the BSC-Chain, maybe you should ask for help in their forum: Home | Binance Chain Forum

And they have a documentation about how to verify contracts, maybe you can have a look at it:

BTW, maybe you should share your source code and contract address.

4

Hi thanks for helping!

this is the contract i use:

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import “@openzeppelin/contracts/token/ERC20/ERC20.sol”;

contract MonopolyCoin is ERC20 {
constructor() ERC20(“MonopolyCoin”, “MONO”) {
_mint(msg.sender, 75000000000000 * 18 ** decimals());
}
}

and the contract code is 0x88d5d7326180627d981fffd81ffb82cf7e0493e8

i already tried to verify it with truffle and hardhat but i cant get that to work

5

I also had a try, but failed, so maybe this is not your source code or is there some special config you set?

7

Sorry this is the code i made my token with:

pragma solidity ^0.8.0;

import “https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol”;

contract MonopolyCoin is ERC20 {
constructor(unit256 initialsupply) public ERC20 (“MonopolyCoin”, “MONO”){
_mint(msg.sender, initialsupply);
}
}

this is the error i get with this:
ParserError: Source “https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol” not found: File import callback not supported
→ myc:5:1:

this did not work for me would you mind to give it another go?

8

Tried again, but still failed, so is this your source code or is there some special config you set?

10

No i dont think i used a special config, i used this tutorial https://youtu.be/K8JoqxOVSaY to make the token

11

I tried again to verify and got this error now

ParserError: Expected string literal (path), “*” or alias list.
→ myc:3:8:
|
3 | import “https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol”
| ^

12

You can not use this way when you want to verify contract, you should flatten contract or upload this dependency.