Process-Based Composition of Permissioned and Permissionless Blockchain Smart Contracts

Falazi, Ghareeb; Hahn, Michael; Breitenbücher, Uwe; Leymann, Frank; Yussupov, Vladimir

doi:10.1109/edoc.2019.00019

Cited by 27 publications

(17 citation statements)

References 11 publications

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“…Four present a custom blockchain implementation and only two studies consider Bitcoin. Finally, Corradini et al [34] and Falazi et al [26] present artefacts for multiple blockchains.…”

Section: Dimensions and Classification Resultsmentioning

confidence: 98%

Blockchain for Business Process Enactment: A Taxonomy and Systematic Literature Review

Stiehle¹,

Weber²

2022

Preprint

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Blockchain has been proposed to facilitate the enactment of interorganisational business processes. For such processes, blockchain can guarantee the enforcement of rules and the integrity of execution traceswithout the need for a centralised trusted party. However, the enactment of interorganisational processes pose manifold challenges. In this work, we ask what answers the research field offers in response to those challenges. To do so, we conduct a systematic literature review (SLR). As our guiding question, we investigate the guarantees and capabilities of blockchain-based enactment approaches. Based on resulting empirical evidence, we develop a taxonomy for blockchain-based enactment. We find that a wide range of approaches support traceability and correctness; however, research focusing on flexibility and scalability remains nascent. For all challenges, we point towards future research opportunities.

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“…Four present a custom blockchain implementation and only two studies consider Bitcoin. Finally, Corradini et al [34] and Falazi et al [26] present artefacts for multiple blockchains.…”

Section: Dimensions and Classification Resultsmentioning

confidence: 98%

Blockchain for Business Process Enactment: A Taxonomy and Systematic Literature Review

Stiehle¹,

Weber²

2022

Preprint

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“…From the user's perspective, the set of nodes that form the distributed, fault-tolerant workflow system, look little different from a singluar YAWL system. In proof-of-work systems, users and workflow engines must be aware of and react to possible transaction invalidation, blockchain reorganization, eventual/delayed consensus and transactions pending their required "assumed safe" mining depth [21], [22]. In contrast, because of immediate and final consensus in the BFT protocols, our system behaves similar to non-blockchain systems, with no pending transactions or latency for block mining.…”

Section: Discussionmentioning

confidence: 99%

Adapting Workflow Management Systems to BFT Blockchains -- The YAWL Example

Evermann¹

2020

Preprint

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Blockchain technology provides an auditable and tamper-proof distributed storage infrastructure for information records. This can be leveraged to support distributed workflow management. Compared to proof-of-work consensus, popularized by Bitcoin and Ethereum, blockchains based on BFT (byzantine fault tolerance) ordering consensus trade scalability for immediacy and finality of consensus. This makes them easier to use as distribution infrastructure, as applications need not be adapted to deal with eventual consistency and delayed consensus of proof-ofwork blockchains. Hence, applications such as workflow engines can be easily ported to such a blockchain infrastructure to take advantage of their decentralized integrity assurance and information distribution model. In this paper we describe how the YAWL workflow engine can be used on a BFT based blockchain infrastructure to enable collaborative workflows across different organizations.

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“…It also implements an interface between blockchains and the workflow engine, allowing workflow tasks to track transaction status and submit new transactions. BlockME2 adds a measure for degree of confirmation in different blockchains and access to smart contracts [16]. Noting that ownership of process control and visibility of data are changed when processes are executed on blockchain infrastructure, [26] extend BPMN choreography diagrams with data objects to represent public information on the blockchain, with subchoreographies to limit data visibility, with smart-contract controlled gateways, and with transaction-driven semantics.…”

Section: Blockchain-based Workflow Managementmentioning

confidence: 99%

Workflow Management on Proof-of-Work Blockchains: Implications and Recommendations

Evermann

Kim

2021

SN COMPUT. SCI.

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Blockchain technology, originally popularized by cryptocurrencies, has been proposed as an infrastructure technology with applications in many areas of business management. Blockchains provide an immutable record of transactions, which makes them useful in situations where actors must cooperate but may not fully trust each other. In this paper, we examine the use of proof-of-work blockchains for executing inter-organizational workflows. We discuss architectural options and describe two prototype implementations of a blockchain-based workflow management system (WfMS), highlighting differences to traditional WfMS. Our main contribution is the identification of potential problems raised by proof-of-work blockchain infrastructure and recommendations to address them.

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Process-Based Composition of Permissioned and Permissionless Blockchain Smart Contracts

Cited by 27 publications

References 11 publications

Blockchain for Business Process Enactment: A Taxonomy and Systematic Literature Review

Blockchain for Business Process Enactment: A Taxonomy and Systematic Literature Review

Adapting Workflow Management Systems to BFT Blockchains -- The YAWL Example

Workflow Management on Proof-of-Work Blockchains: Implications and Recommendations

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