This guide walks you through using Truffle migrations to deploy an NFT smart contract to the Palm network.
4. Install Truffle's HDWalletProvider
We'll use a contract based on the OpenZeppelin library’s ERC-721 implementation.
a) First, install the Open Zeppelin library in order to inherit its classes:
b) Next, create a file named NFT.sol under the contracts folder.
c) Lastly, add the following smart contract to NFT.sol file. Note that we have named our contract NFT, this can be any name.
The name will be important in the next step.
What are Migrations?
Under the migrations folder, create your filename: 1_example_migration.js
7. Set environment variables with dotenv
- Install dotenv
Keep Your Private Keys Secret Private keys must be kept secret and not committed to any code repository. In the example of this tutorial, the .env file should be added to your .gitignore file and kept local. For example, see MyCrypto's Protecting Yourself and Your Funds guide.
- Create a .gitignore file
A great example of a Solidity .gitignore file can be found here
- Create an .env file n your project's root folder, and set environment variables in the file as follows
Paste your `contract address:` from the log of the previous step into the search bar. It may take 10-20 minutes to appear.
If successful, you will see something like this screenshot:
This plugin will allow you to automatically verify your smart contracts's source code straight from the CLI.
Use the name of your contract to verify on the desired network.