| ONTOCHAIN.NGI.EU
• Extend the ERC721 metadata using JSON-LD
• 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