Can anyone help with Metadata Hash?

So while venturing through ARC3 for my first test NFT, I kept seeing my Metadata Hash not matching. I’m not sure what this is referring to but when I checked the Metadata Hash of well known NFTs on Algoexplorer, they are empty. Is it something that is needed or is it something that I should have? I’m at a loss.

Hi NineTwo,

Its possible they’re using an alternate or no spec at all.

The metadata hash should be exactly the sha256 hash of the bytes stored on IPFS. Sometimes, depending on how you do it, things like json formatting will screw up your assumptions about how things get stored on IPFS. If you’re using python for example, you’d probably want json.dumps(separators=(',', ':'))