🎼 Trackloaded Dataset – RDF & SPARQL Access

The Trackloaded dataset provides machine-readable metadata for Nigerian music artists and labels. Data is available as RDF, Turtle, JSON-LD, and through a SPARQL endpoint.

🔗 Access Points

• SPARQL Endpoint: /sparql-endpoint.php
• SPARQL Browser: /sparql-browser
• VoID Metadata: /?void=1
• RDF Sitemap: /?build_rdf_sitemap

📡 Discovery Files

• Feeds: /.well-known/feeds.json
• Capabilities: /.well-known/capabilities.json
• Skill Description: /.well-known/skill.md
• Feeds OPML: /feeds.opml

📄 Per-Entity RDF Exports

Artist and label pages support RDF serialization through query parameters:

• ?rdf=ttl or ?format=ttl — Turtle
• ?rdf=xml or ?format=xml — RDF/XML
• ?rdf=jsonld or ?format=jsonld — JSON-LD

Examples:

• /tag/olamide/?rdf=ttl
• /tag/ybnl/?rdf=jsonld

📦 Embedded Structured Data

Profile pages include inline JSON-LD using Schema.org types.

• Artists: Person
• Labels: MusicGroup

💡 Example SPARQL Queries

Artists

PREFIX foaf: 
PREFIX schema: 

SELECT ?name ?image ?genre ?bio ?memberOf
WHERE {

  ?x a foaf:Person ;
     foaf:name ?name .

  OPTIONAL { ?x schema:image ?image }
  OPTIONAL { ?x schema:genre ?genre }
  OPTIONAL { ?x foaf:bio ?bio }
  OPTIONAL { ?x schema:memberOf ?memberOf }

}
LIMIT 25

Labels

PREFIX foaf: 
PREFIX mo: 
PREFIX schema: 

SELECT ?name ?image ?members ?founder
WHERE {

  ?x a mo:MusicGroup ;
     foaf:name ?name .

  OPTIONAL { ?x schema:image ?image }
  OPTIONAL { ?x mo:has_member ?members }
  OPTIONAL { ?x schema:founder ?founder }

}
LIMIT 25

Artist → Label Relationships

PREFIX schema: 

SELECT ?artist ?memberOf
WHERE {

  ?artist schema:memberOf ?memberOf .

}
LIMIT 50

📚 Vocabularies Used

• foaf:name
• foaf:homepage
• foaf:bio
• schema:image
• schema:genre
• schema:memberOf
• schema:founder
• mo:has_member
• owl:sameAs

📜 License

This dataset is available under the Creative Commons Attribution 4.0 License .