Existing Metadata Standards¶
Web3¶
| Type | Network | Standard / Name | Compatibility | Storage | Format | Comments |
|---|---|---|---|---|---|---|
| Metadata Standard for NFT Marketplace | Ethereum | OpenSea Metadata Standard | ERC721 + ERC1155 | onchain + off-chain via HTTP(S) or IPFS | ||
| Proposal for Metadata Standard | Tezos | TZIP-16 | onchain + off-chain via HTTP(S) or IPFS | JSON | https://medium.com/@TQTezos/contract-metadata-on-tezos-e4c692e2f6ba | |
| Implementation of the Proposal for Metadata Standard | Tezos | TZIP-16 implementation (contract metadata standard) |
Web2¶
| Standard | Timeline | Comment |
|---|---|---|
| Dublin Core | Start in 1995, first standard in 2007 | Dublin Core on wikipedia |
| RDF | W3C rec. in 1999, RDF 1.0 in 2004, RDF 1.1 in 2014 | RDF on wikipedia |
| JSON | First spec. by Crockford in 2000, ECMA-404 in 2013 | JSON on wikipedia |
| JSON-LD | JSON-LD 1 W3C Rec. in 2014 | JSON-LD on wikipedia |
| Schema.org | Started in 2011 by Bing, Google and Yahoo! | schema.org on wikipedia |