Verifying Contract on Etherscan

VerifyContractOnEtherscan.txt

1. Head to the contract’s page on Etherscan, click the “Code” tab, click “Verify and Publish”

2. Click to try the “new Beta Source Code Contract Verifier” (note that Etherscan does not 
   support imports, so if your contract uses imports you will need to concatenate the code 
   into a single file)
   
3. Follow the steps shown on that page to verify and publish. To ensure you choose the right 
   compiler version, after compiling your contract with truffle open up ContractName.json and 
   find the line that looks like this:
   
   "compiler": {
     "name": "solc",
     "version": "0.4.23+commit.124ca40d.Emscripten.clang"
   },