Thanks, I’m glad you’re enjoying the series! I actually read your article last week and thought it was an excellent compilation of ERC721 resources.

With regard to the OpenZeppelin implementation: I took a quick look at it and you’re right, they do Metadata a little differently. I’m not affiliated with the OpenZeppelin people at all (although I support what they do), so can’t speak to how their implementation will work in the future, but the difference is more of a design choice rather than one method being superior to another.

Without having a deep dive into their code, it seems they also don’t allow for an initial supply to be defined. I think fundamentally their contract was designed to be less scalable in favour of each token being “more unique” — there’s no assumption that Metadata will follow any pattern, and I think it also allows for tokens to be minted by mechanisms triggered by anybody (whereas mine assumes the token creator is the only one who can mint them).

Codeslinger. Melbourne based Solidity developer for hire.

Codeslinger. Melbourne based Solidity developer for hire.