Metadata storage, review ERC-2477

[thecryptofruit]

Could we use the metadata functionalities of erc1155 and erc721 to have these structured and easily accessible by others? Can create another issue for this.
See ERC-2477 metadata integration, too: ethereum/EIPs#2483

Originally posted by @thecryptofruit in #16 (comment)

[cliffhall]

This standard is still in draft with no activity for over 6 months. Still, I think this is worth considering for v2, because it's essentially having the contract supply hashes for the metadata and its schema so they can be verified to have not been changed in transit.

But that's another repo and project.

Closing this one here.