Registry metadata

[jaytoday]

It may be helpful for wallets, dApps and tools like the Web3 credentials library to be able to refer to metadata describing a verification registry, just as they can lookup metadata about an NFT at a tokenURI specified by an NFT contract.

This proposal will be to create a simple extension for registry contract libraries that allows a metadataURI to be specified for the contract.

The metadata document at the specified URI will contain a JSON object with properties. These properties will include top-level category properties and various child properties. The top level properties would likely be:

• registry - Details about the registry itself, including the format and format version that would allow a wallet or dApp to infer how to interface with it.
• credential - Information about the credential associated with the registry and the issuers that can be used to obtain a credential verification.

Other properties will be added as needed, and a more formal JSON Schema will be provided in a detailed proposal.

Presumably, metadata will often be stored using IPFS for the purpose of immutability, or may be handled by a service or protocol assisting with providing up-to-date metadata.

[kimdhamilton]

+1, agree this would be helpful