Which event happened first?
- First come, first served: Critical choices between alternative actions are often made based on events external to an organization, and reacting promptly to their occurrence can be a major advantage over the competition. In Business Process Management (BPM), such deferred choices can be expressed in process models, and they are an important aspect of process engines. Blockchain-based process execution approaches are no exception to this, but are severely limited by the inherent properties of the platform: The isolated environment prevents direct access to external entities and data, and the non-continual runtime based entirely on atomic transactions impedes the monitoring and detection of events. In this paper we provide an in-depth examination of the semantics of deferred choice, and transfer them to environments such as the blockchain. We introduce and compare several oracle architectures able to satisfy certain requirements, and show that they can be implemented using state-of-the-art blockchain technology.
Verfasserangaben: | Jan LadleifORCiDGND, Mathias WeskeORCiDGND |
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DOI: | https://doi.org/10.3389/fbloc.2021.758169 |
ISSN: | 2624-7852 |
Titel des übergeordneten Werks (Englisch): | Frontiers in blockchain |
Untertitel (Englisch): | Deferred choice on blockchain using oracles |
Verlag: | Frontiers in Blockchain |
Verlagsort: | Lausanne, Schweiz |
Sonstige beteiligte Person(en): | Claudio Di Ciccio, Remo Pareschi, Giovanni Meroni |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Datum der Erstveröffentlichung: | 26.10.2021 |
Erscheinungsjahr: | 2021 |
Datum der Freischaltung: | 07.06.2022 |
Freies Schlagwort / Tag: | blockchain; business process management; business processes; deferred choice; formal semantics; oracles; smart contracts; workflow patterns |
Band: | 4 |
Aufsatznummer: | 758169 |
Seitenanzahl: | 16 |
Erste Seite: | 1 |
Letzte Seite: | 16 |
Organisationseinheiten: | Extern / Extern |
Digital Engineering Fakultät / Hasso-Plattner-Institut für Digital Engineering GmbH | |
DDC-Klassifikation: | 0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik |
Peer Review: | Referiert |
Fördermittelquelle: | Publikationsfonds der Universität Potsdam |
Publikationsweg: | Open Access / Gold Open-Access |
Lizenz (Deutsch): | CC-BY - Namensnennung 4.0 International |
Externe Anmerkung: | Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Reihe der Digital Engineering Fakultät ; 11 |