Verify Smart Contract Programmatically

The recommended way to verify a smart contract is using plugin. It is easier to read, imports are maintained, licenses are maintained.

Verified using Truffle

Example: https://testnet.bscscan.com/token/0x68D2E27940CA48109Fa3DaD0D2C8B27E64a0c6cf

GitHub Project: https://github.com/huangsuyu/verify-example

Truffle

Truffle has an BscScan plugin: truffle-plugin-verify

You need to deploy with Truffle to verify with the Truffle verify plugin.

• Install the plugin

npm install -D truffle-plugin-verify

• Generate an API Key on your BscScan account (see the BscScan website)

What is BscScan API?

• Configure the plugin in truffle-config.js

```javascript
const HDWalletProvider = require("@truffle/hdwallet-provider");

const { mnemonic, BSCSCANAPIKEY} = require('./env.json');

module.exports = {

  plugins: [
    'truffle-plugin-verify'
  ],
  api_keys: {
    bscscan: BSCSCANAPIKEY
  },
  networks: {

    testnet: {
        provider: () => new HDWalletProvider(mnemonic, `https://data-seed-prebsc-1-s1.binance.org:8545`),
        network_id: 97,
        timeoutBlocks: 200,
        confirmations: 5,
        production: true    // Treats this network as if it was a public net. (default: false)
    }
  },

  // Set default mocha options here, use special reporters etc.
  mocha: {
    timeout: 100000
  },

// Configure your compilers
  compilers: {
    solc: {
       version: "0.5.16",    // Fetch exact version from solc-bin (default: truffle's version)
      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
      settings: {          // See the solidity docs for advice about optimization and evmVersion
       optimizer: {
         enabled: false,
         runs: 200
       },
       evmVersion: "byzantium"
      }
    },
  },
};
```

• Verify

truffle run verify SomeContractName AnotherContractName --network networkName [--debug]

For example:

truffle run verify BEP20Token@{contract-address} --network testnet

You should see the following output:

Verifying BEP20Token@0x68D2E27940CA48109Fa3DaD0D2C8B27E64a0c6cfPass - Verified: https://testnet.bscscan.com/addres