Distributed ledger systems have become more prominent and successful in recent years, with a major focus on blockchains and cryptocurrency especially. This has led to various misunderstandings about both the technology itself and its capabilities, as in many cases these two became synonymous and other applications are often overlooked. Therefore, as a whole, the view of distributed ledger technology beyond blockchains and cryptocurrencies is very limited. Existing vocabularies and ontologies often focus on single aspects of the technology, or in some cases even just on one product. This often leads to other types of distributed ledgers and their possible use cases being neglected. This dataset contains a knowledge graph built on an ontology for distributed ledger technologies, which includes concepts to model security aspects such as technical threats and vulnerabilities of distributed ledger systems, application domains, as well as relevant standards and regulations. A detailed documentation can be found here: https://w3id.org/DLTOntology