2022
Xu, Yibin; Slaats, Tijs; Düdder, Boris; Debois, Søren; Wu, Haiqin
Distributed and Adversarial Adversary Workflow Execution on Algorand Blockchain Proceedings Article
In: 6th International Workshop on Trusted Smart Contracts (WTSC), Springer, 2022.
BibTeX | Tags: Blockchain, BPM, Distributed, Distributed Ledger Technology, Workflow
@inproceedings{Algorand22,
title = {Distributed and Adversarial Adversary Workflow Execution on Algorand Blockchain},
author = {Yibin Xu and Tijs Slaats and Boris Düdder and Søren Debois and Haiqin Wu},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
booktitle = {6th International Workshop on Trusted Smart Contracts (WTSC)},
journal = {LNCS},
publisher = {Springer},
keywords = {Blockchain, BPM, Distributed, Distributed Ledger Technology, Workflow},
pubstate = {published},
tppubtype = {inproceedings}
}
Bager, Simon; Düdder, Boris; Henglein, Fritz; Hebert, Juan Manuel; Wu, Haiqin
Event-based Supply Chain Network Modeling: Blockchain for Good Coffee Journal Article
In: Frontiers in Blockchain, 2022, ISSN: 2624-7852 , (Open Access).
Links | BibTeX | Tags: Blockchain, Supplychain
@article{COWI21,
title = {Event-based Supply Chain Network Modeling: Blockchain for Good Coffee},
author = {Simon Bager and Boris Düdder and Fritz Henglein and Juan Manuel Hebert and Haiqin Wu},
url = {https://www.frontiersin.org/articles/10.3389/fbloc.2022.846783/full},
doi = {10.3389/fbloc.2022.846783},
issn = {2624-7852 },
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Frontiers in Blockchain},
publisher = {Frontiers},
note = {Open Access},
keywords = {Blockchain, Supplychain},
pubstate = {published},
tppubtype = {article}
}
Xu, Yibin; Slaats, Tijs; Düdder, Boris
A two-dimensional sharding model for access control and data privilege management of blockchain Journal Article
In: Simulation Modelling Practice and Theory, vol. 119, pp. 102678, 2022, ISSN: 1569-190X.
Abstract | Links | BibTeX | Tags: Blockchain, Blockchain storage, Modeling and simulation, Sharding
@article{TwoBCSharding2022,
title = {A two-dimensional sharding model for access control and data privilege management of blockchain},
author = {Yibin Xu and Tijs Slaats and Boris Düdder},
editor = {Helen Karatza},
url = {https://www.sciencedirect.com/science/article/pii/S1569190X22001484},
doi = {10.1016/j.simpat.2022.102678},
issn = {1569-190X},
year = {2022},
date = {2022-01-01},
journal = {Simulation Modelling Practice and Theory},
volume = {119},
pages = {102678},
publisher = {ScienceDirect},
abstract = {This paper presents a method to manage private data stored on a blockchain. With our method, the blockchain’s features for log transparency and tamper-resistance are maintained, even though the data is only available to authorized users. The most relevant work so far randomly selects nodes to store the decryption key shares of a threshold cryptosystem for some data which are not maintained in the system. They provide the decryption keys to the data requester via on-chain methods. This is for guaranteeing the availability and distributing the incentives. If the system maintains the data and wants to achieve the same guarantees, it has to post the data to the blockchain. This will make the blockchain oversized and the work impractical. This paper shows that nodes in our method may provide data to the requester directly without posing to the blockchain while guaranteeing availability and that the incentives be fairly distributed. Furthermore, each data request incurs a tiny size of transactions. We achieve so by implementing a two-dimensional sharding model, where nodes are randomly assigned to shards. Data is arithmetically compressed and then split into pieces. Each data piece is stored by a node in a first dimension shard. Without getting all the pieces, the data cannot be successfully decompressed. Each node in the first dimension shard is monitored by a second dimension shard. We propose designs that empower the corresponding second dimension shard for evaluating whether the first dimension node has provided the correct data piece to the data requester. This waives the need for placing the data into transactions and being witnessed by all. In case when a first dimension node fails, its data will be recovered by the corresponding second dimension shard.},
keywords = {Blockchain, Blockchain storage, Modeling and simulation, Sharding},
pubstate = {published},
tppubtype = {article}
}
2021
Düdder, Boris; Wu, Haiqin; Henke, Michael; Straub, Natalia; Gürpinar, Tan; Ioannidis, Philipp Asterios; Fomin, Vladislav; Matulevičius, Raimundas; Iqbal, Mubashar
BlockNet Report: Curriculum Guidance Document Journal Article
In: 2021.
BibTeX | Tags: Blockchain, published
@article{2102.03226,
title = {BlockNet Report: Curriculum Guidance Document},
author = {Boris Düdder and Haiqin Wu and Michael Henke and Natalia Straub and Tan Gürpinar and Philipp Asterios Ioannidis and Vladislav Fomin and Raimundas Matulevičius and Mubashar Iqbal},
year = {2021},
date = {2021-01-01},
keywords = {Blockchain, published},
pubstate = {published},
tppubtype = {article}
}
Düdder, Boris; Fomin, Vladislav; Guerpinar, Tan; Henke, Michael; Ioannidis, Philipp Asterios; Janaviciene, Viktorija; Matulevicius, Raimundas; Iqbal, Mubashar; Straub, Natalia
BlockNet Report: Exploring the Blockchain Skills Concept and Best Practice Use Cases Journal Article
In: 2021.
BibTeX | Tags: Blockchain, published
@article{2102.04333,
title = {BlockNet Report: Exploring the Blockchain Skills Concept and Best Practice Use Cases},
author = {Boris Düdder and Vladislav Fomin and Tan Guerpinar and Michael Henke and Philipp Asterios Ioannidis and Viktorija Janaviciene and Raimundas Matulevicius and Mubashar Iqbal and Natalia Straub},
year = {2021},
date = {2021-01-01},
keywords = {Blockchain, published},
pubstate = {published},
tppubtype = {article}
}
2020
Düdder, Boris; Fomin, Vladislav; Gürpinar, Tan; Henke, Michael; Janavicene, Viktorija; Matulevicius, Raimundas; Straub, Natalia; Wu, Haiqin; Iqbal, Mubashar
Interdisciplinary Blockchain Education: Utilizing Blockchain Technology from Various Perspectives Journal Article
In: Frontiers in Blockchain, 2020.
Links | BibTeX | Tags: Blockchain, published
@article{Blocknet20,
title = {Interdisciplinary Blockchain Education: Utilizing Blockchain Technology from Various Perspectives},
author = {Boris Düdder and Vladislav Fomin and Tan Gürpinar and Michael Henke and Viktorija Janavicene and Raimundas Matulevicius and Natalia Straub and Haiqin Wu and Mubashar Iqbal},
doi = {10.3389/fbloc.2020.578022},
year = {2020},
date = {2020-01-01},
journal = {Frontiers in Blockchain},
keywords = {Blockchain, published},
pubstate = {published},
tppubtype = {article}
}
2018
Beck, Roman; Tan, Chee-Wee; Avital, Michel; Düdder, Boris
Sino-Danish Blockchain Experts' Dialogue Technical Report
Innovation Center Denmark 2018.
Links | BibTeX | Tags: Blockchain
@techreport{SDBED18,
title = {Sino-Danish Blockchain Experts' Dialogue},
author = {Roman Beck and Chee-Wee Tan and Michel Avital and Boris Düdder},
editor = {Ran Zhao and Søren Boutup and Martin Bech},
url = {http://kina.um.dk/~/media/Kina/ICDK%20Shanghai%20Report%20%20Blockchain%20tour%202018%20w%20back%20page.pdf},
year = {2018},
date = {2018-11-01},
institution = {Innovation Center Denmark},
keywords = {Blockchain},
pubstate = {published},
tppubtype = {techreport}
}
2017
Düdder, Boris; Ross, Omri
Timber Tracking: Reducing Complexity of Due Diligence by using Blockchain Technology Proceedings Article
In: Proceedings of 2nd Workshop on Managed Complexity, 2017.
BibTeX | Tags: Blockchain, Distributed Ledger Technology, Due diligence
@inproceedings{DR17,
title = {Timber Tracking: Reducing Complexity of Due Diligence by using Blockchain Technology},
author = {Boris Düdder and Omri Ross},
year = {2017},
date = {2017-08-31},
booktitle = {Proceedings of 2nd Workshop on Managed Complexity},
keywords = {Blockchain, Distributed Ledger Technology, Due diligence},
pubstate = {published},
tppubtype = {inproceedings}
}