|Title||A Pattern Language for Blockchain-based Applications|
|Publication Type||Conference Paper|
|Year of Publication||2018|
|Authors||Xiwei Xu, Cesare Pautasso, Liming Zhu, Qinghua Lu, and Ingo Weber|
|Conference Name||23rd European Conference on Pattern Languages of Programs (EuroPLoP)|
|Conference Location||Kloster Irrsee, Germany|
Blockchain is an emerging technology that enables new forms of decentralized software architectures, where distributed components can reach agreements on shared system states without trusting a central integration point. Blockchain provides a shared infrastructure to execute programs, called smart contracts, and to store data. Since blockchains are at an early stage, there is a lack of a systematic and holistic view on designing software systems that use blockchain. We view blockchain as part of a bigger system, which requires patterns of using blockchain in the design of the bigger systems. In this paper, we collect a list of patterns for blockchain-based applications. The pattern collection is categorized into four types, including interaction with external world patterns, data management patterns, security patterns and contract structural patterns. Some patterns are designed specifically based on real-world blockchain-based applications considering the nature of blockchain. Others are variants of existing design patterns applied in the context of blockchain-based applications and smart contracts.
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