Use JSON-LD context to make default NFT metadata available as plain JSON • CopyrightLY NFTs compatible with NFT marketplaces (OpenSea, Rarible,...) • Tradable (ownership, sell, auctions, bids, offers,...) • Semantic NFTs • schema.org vocabulary and Copyright Ontology • Represent reuse terms licensed with the NFT LICENSE NFT (SEMANTIC) { "@context": { "@vocab": "https://schema.org/", "cro": "https://rhizomik.net/ontologies/copyrightonto.owl#", "external_link": "https://opensea.io/metadata/external_link", "animation_url": "https://opensea.io/metadata/animation_url", "youtube_url": "https://opensea.io/metadata/youtube_url" }, "@id": "did:eip155:4:erc721:0x8E8B...3a97:2766...3627", "@type": "cro:Agree", "name": "Reuse license for 'Snow Again in Mollerussa'", "description": "Grants the owner permission to make QmPP...xDj8 available on the World Wide Web from Oct 4, 2021, 10:54:01 AM to Oct 4, 2022, 10:54:01 AM", "external_link": "https://copyrightly.rhizomik.net/manifestations/QmPP...xDj8", "image": "ipfs://QmPP8X2rWc2uanbnKpxfzEAAuHPuThQRtxpoY8CYVJxDj8", "animation_url": "ipfs://QmPP8X2rWc2uanbnKpxfzEAAuHPuThQRtxpoY8CYVJxDj8", "cro:when": "2021-10-04T08:54:01.220Z", "cro:who": { "@id": "did:ethr:0x4:0xfd9c5fc8fcecf69041749fb34778e0b00c4a70f5", "url": "https://copyrightly.rhizomik.net/creators/0xfd9c...70f5" }, "cro:what": { "@type": "cro:MakeAvailable", "startTime": "2021-10-04T08:54:01.220Z", "endTime": "2022-10-04T08:54:01.220Z", "cro:who": { "owns": "did:eip155:4:erc721:0x8E8B...3a97:2766...3627" }, "cro:what": { "@id": "ipfs://QmPP8X2rWc2uanbnKpxfzEAAuHPuThQRtxpoY8CYVJxDj8", "@type": "cro:Manifestation", "name": "Snow Again in Mollerussa", "url": "https://copyrightly.rhizomik.net/manifestations/QmPP...xDj8" }, "cro:with": { "@id": "https://dbpedia.org/resource/World_Wide_Web" } } } ERC721 Metadata Semantic Metadata