This tiny ERC-721 contract shows up in MetaMask but not in OpenSea or How can I fix it?


I'm BM. A very nice and polite guy.

I am working on a tiny ERC-721 contract, have a look here:

The minted NFT will actually show up in MetaMask, image and all so that part works.

However it won't show up in or

Does anyone know what I need to add to the template in order to make it show up in and section as well? I'm looking for exact code, not pseudocode. Kindly reply with working code if you are able to improve the code so that it meets all three requirements (NFT shows up in MetaMask, and