Metadata Reference Materials
Data Protocols/Architecture
The Graph
Fluree - Data-Centric Architecture
Data APIs
Cardano REST
Cardano REST provides a set of APIs for interacting with on-chain data through JSON over HTTP.
Discord Context
GraphQL
GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data.
Cross Platform Standards
InterNFT Working Group
A community-led initiative to develop Interchain standards that will advance the state of the art for Non-fungible Tokens and the Metadata associated with uniquely identified tokenised resources.
InterNFT GitHub Repository
The Ethereum Platform
Opensea Metadata Standards
How to add rich metadata to your ERC721 or ERC1155 NFTs
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