Verify contract: ParserError: Source “https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol” not found

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Hi @jscrui,

Welcome to the community :wave:

You should only use an official release of OpenZeppelin Contracts. Currently you are importing via GitHub the master branch which is subject to change.

Remix now supports @ (npm style) imports. Try this using the Contracts Wizard: https://zpl.in/wizard

As for verifying you can try the following with Hardhat: Verify smart contract inheriting from OpenZeppelin Contracts