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How to create an NFT smart contract in 5 minutes

Let's go through a simple example and create a workflow to sell digital content aka NFT's. Heres the full walkthrough:

Prerequisites​

Before we start it is required acquire the neccessary access.

Create account in Toolblox​

In order to create and deploy smart contracts you need to create an account and log-into Toolblox.

Install Metamask​

To deploy a new smart contract for everyone to use and to use it, you need a wallet. In Tooblox you have 2 options:

For our test case, please install the Metamask add-on.

Get some Polygon test-coins​

In order to deploy and use smart contracts you need to pay for 'gas' - these are the rules of blockchain. For testing purpose each blockchain has a test version called testnet - it looks and behaves like the real one, except the currency which moves on it is fake test money.

In order to test our smart contract you would need to use a faucet to get a little bit of the fake test money. It is basically a free service which just sends fake test money to an account you desire.

For our test case, please use the Polygon's faucet which can be found here: https://faucet.polygon.technology/.

Step 1. Create a smart contract with AI​

Use Toolblox plugin in ChatGPT plugin marketplace or integrated AI generation to create a smart contract.

Option 1. Toolblox plugin for ChatGPT​

Option2. Toolblox integrated AI helper​

Step 2. Build and enhance with no-code​

While AI generation is perfect to get up and going it is not perfect - its is up to the author to verify all states, transitions and properties are valid.

In this case the following updates where decided to be needed

  • Add Name and Description as parameters to the Publish transition
  • Set Symbol ("DIP") to the workflow - this is needed for NFTs.
  • Set owners to diploma states. Also required if the item is an NFT.
  • Set compatibility to ERC721 (NFT)

Step 3. Deploy to blockchain​

Deployment is very straightforward. Just select your desired blockchain (in this case Polygon) and hit Deploy.

Troubleshooting​

In case of issues review the workflow Spec (click 'View spec' in deploy step) and double check it looks like the following:

University diploma workflow 0cd25dbb : Diploma : DIP : ERC721;

Id : integer(),
Status : integer(),
Name : string(),
Image : image(),
Student : address(),
University : address(),
Description : string(),;

0:Published:University,
1:Transferred:Student;

'' => 'Published' : Publish (Image,Name,Description) + ASSERT_ACCESS(restricted=University);
'Published' => 'Transferred' : Transfer (Student) + ASSERT_ACCESS(restricted=University);

Especially review the following:

  • 'Owner' attributes have 'User' type
  • Access restrictions have 'University' as rights
  • Users are of type address()

In case of unresolved issue please contact support, we are more than happy to help!

Congratulations!​

Thats it, your first smart contract is now running on blockchain. To test it our Toolblox generates a simple user interface. Click Run to give it a test run.

Since the contract was made ERC721 (NFT) compatible the diplomas can be verified in popular NFT marketplaces such as OpenSea (testnet). Here is the diploma from the demo.