Here I’m going to assume you know a few of the basic cryptocurrency terms and have a metamask wallet, and polygon on the polygon network. You can see how to set up metamask here. You can view the more detailed post here.
We have created 10,000 randomly generated Karel NFTs on the polygon blockchain. If you want to mint your own Karel NFT, read below! If you need more background read some of the earlier posts above. Here are a few sample Karel NFTs:
Mint your own Karel NFT
Ok- now for the fun part. Also the good thing about the setup is once you have metamask and polygon set up, you only need to do that once. The reason I’m using polygon here instead of ethereum is because transaction fees on polygon are less than a cent, and on ethereum it can be $50-$100 or more. Karel NFTs right now mint for 1 MATIC which is about $2. Minting a NFT means you are creating a new transaction on the blockchain and creating a new unique token.
Then click Connect.
Then select the number you want to buy. I will mint 1 for 1 MATIC.
Then you will receive a pop up you want to approve.
This costs 1.00855 MATIC, 1 MATIC to mint and 0.00855 in transaction fees.
Then I click the Mint box, and then View on block explorer. That takes me to see my transaction on polygonscan.com.
You can see here I minted karel #159.
View your NFT on OpenSea
Now you want to view your NFT. Go to OpenSea.io. Click the Profile icon in the top left, then connect your account with Metamask.
After a couple of minutes your karel will show up on your profile.
Now you can click in to your NFT to see the main page for it.
So there you go! Now you can view your NFT. Here is the link for mine: https://opensea.io/assets/matic/0x9f0105fa457279db93545ebfd7a190659a2fd97c/159
You can also see the properties here if you scroll down:
So that is it! It is a bit complicated to get started right now but that is a way to get started minting your own NFT.
We have 10,000 generated Karel NFTs. If you mint one, let me know! Also if you are a student on CodeHS who does this definitely let me know! I’m sure some students are already crypto wizards.