| Title | From Oracles to Trustworthy Data On-Chaining Systems |
| Publication Type | Conference Paper |
| Year of Publication | 2019 |
| Authors | Heiss, Jonathan, Eberhardt, Jacob, Tai, Stefan |
| Conference Name | 2019 IEEE International Conference on Blockchain (Blockchain) |
| Date Published | jul |
| Keywords | blockchain, blockchain transactions, blockchain-external data sources, composability, cyber physical systems, on-chaining, oracle, Oracle systems, pubcrawl, Resiliency, smart contract, TLS, Trusted Computing, Trusted Execution Environment, trustworthiness, trustworthy data on-chaining systems, Trustworthy Systems, truthfulness, Voting |
| Abstract | Many blockchain transactions require blockchain-external data sources to provide data. Oracle systems have been proposed as a link between blockchains and blockchain-external resources. However, these Oracle systems vary greatly in assumptions and applicability and each system addresses the challenge of data on-chaining partly. We argue that Data On-chaining must be done in a trustworthy manner and, as a first contribution, define a set of key requirements for Trustworthy Data On-chaining. Further, we provide an in-depth assessment and comparison of state-of-the-art Oracle systems with regards to these requirements. This differentiation pinpoints the need for a uniform understanding of and directions for future research on Trustworthy Data On-chaining. |
| DOI | 10.1109/Blockchain.2019.00075 |
| Citation Key | heiss_oracles_2019 |
From Oracles to Trustworthy Data On-Chaining Systems