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The Transaction Graph for Modeling Blockchain Semantics

Christian Cachin, Angelo De Caro, Pedro Moreno-Sanchez, Björn Tackmann, Marko Vukolic
2020 Cryptoeconomic Systems  
This demonstrates the applicability of the model and formalizes the transaction-level semantics that these systems aim for.  ...  Although in-depth studies of the consensus protocols as well as the privacy of blockchain transactions are available, there is no formal model of the transaction semantics that a blockchain is supposed  ...  This work has proposed transaction graphs or TDAGs as a discrete model for the semantics of the interactions in a blockchain system.  ... 
doi:10.21428/58320208.a12c57e6 fatcat:bcm4fdnmxraw3hute37ury7xju

The Transaction Graph for Modeling Blockchain Semantics [article]

Christian Cachin, Angelo De Caro, Pedro Moreno-Sanchez, Björn Tackmann, Marko Vukolic
2017 IACR Cryptology ePrint Archive  
This demonstrates the applicability of the model and formalizes the transaction-level semantics that these systems aim for.  ...  In this work, we fill this gap, motivated by the observation that the semantics of transactions in blockchain systems can be captured by a directed acyclic graph.  ...  This work has been supported in part by the European Commission through the Horizon 2020 Framework Programme (H2020-ICT-2014-1) under grant agreement number 644579 ESCUDO-CLOUD and in part by the Swiss  ... 
dblp:journals/iacr/CachinCMTV17 fatcat:vo2ctwgoovc5feq3jna4y7vovu

O Bitcoin Where Art Thou? Insight into Large-Scale Transaction Graphs

Bernhard Haslhofer, Roman Karl, Erwin Filtz
2016 International Conference on Semantic Systems  
It allows users to explore transactions and follow the money flow, facilitates analytics by semantically enriching the transaction graph, supports path and graph pattern search, and guides analysts to  ...  Bitcoin is a rising digital currency and exemplifies the growing need for systematically gathering and analyzing public transaction data sets such as the blockchain.  ...  ACKNOWLEDGMENTS This work was funded by the Austrian research funding association (FFG) under the scope of the ICT of the Future program (contract # 849906).  ... 
dblp:conf/i-semantics/HaslhoferKF16 fatcat:5yqmz5o4pzb3jgu4zb2pklqhnm

Convergence of Blockchain, Autonomous Agents, and Knowledge Graph to Share Electronic Health Records

Yao Yao, Meghana Kshirsagar, Gauri Vaidya, Jens Ducrée, Conor Ryan
2021 Frontiers in Blockchain  
, agent-based modeling, and knowledge graph in a decentralized ecosystem.  ...  We discuss how major concerns in the health industry, i.e., trust, security and scalability, can be addressed by transitioning from existing models to convergence of the three technologies – blockchain  ...  In our proposal, the semantic triples will be encrypted and packed into a blockchain transaction with the signature of agents.  ... 
doi:10.3389/fbloc.2021.661238 fatcat:owjdonlm3jg7jpwbdwi6zzsrfe

Technological foundations of Ontological ecosystems on the 3rd generation Blockchains

Mirek Sopek, Dominik Tomaszuk, Szymon Glab, Filip Turobos, Ivo Zielinski, Dominik Kuzinski, Ryszard Olejnik, Piotr Luniewski, Przemyslaw Gradzki
2022 IEEE Access  
The transactional aspect is concerned with the graph replication consistency, conditions for the direct access to graph data from the blockchain smart-contracts and with linkage between sidechains bearing  ...  In this article we present the technological foundations on which an ecosystem of semantic data objects can be implemented on the latest Blockchain based systems.  ...  Section IV elaborates on the mechanisms for transactionally correct synchronized updates of the Blockchain and graph database states. Section V is devoted to a discussion of the related work.  ... 
doi:10.1109/access.2022.3141014 fatcat:nhkr7itcyjaondw5lpekm3ugvu

A Blockchain-based, Semantically-enriched Software Framework for Trustworthy Decentralized Applications [article]

Thanasis G. Papaioannou, Petar Kochovski, Klevis Shkembi, Caroline Barelle, Anthony Simonet-Boulogne, Marco Ciaramella, Alberto Ciaramella, Vlado Stankovski
2022 Zenodo  
In this paper, we propose a new software framework, namely ONTOCHAIN, that leverages semantic web and blockchain technology to build, as distinct value for the Next Generation Internet, fundamental support  ...  for trustworthy data/services exchange and trustworthy content handling.  ...  For each sensor device, ADOS builds a graph embedding based on a Graph Neural Network model and uses it to perform anomaly detection in the raw measurements.  ... 
doi:10.5281/zenodo.6811328 fatcat:vxsm76solnfxvat27u46dtfcd4

BLONDiE: Blockchain Ontology with Dynamic Extensibility [article]

Ugarte-Rojas Hector, Chullo-Llave Boris
2020 arXiv   pre-print
Its use allows having common data formats of different platforms for further processing, such as the execution of semantic queries.  ...  This research reports the development of BLONDiE, an ontology that allows the semantic representation of knowledge to describe the native structure and related information of the three most relevant blockchain  ...  The use of ontologies in blockchain technologies is the first step in the realization of the "Semantic Blockchain".  ... 
arXiv:2008.09518v1 fatcat:lk5yjmfmgrfujb5qwljitpowgq

SEMANTIC APPROACH TO SMART CONTRACT VERIFICATION

Nenad Petrović, Milorad Tošić
2020 Facta Universitatis Series Automatic Control and Robotics  
Vulnerabilities of smart contract are certainly one of the limiting factors for wider adoption of blockchain technology.  ...  In addition, creating formal semantics for the higher-level language provides support to verification mechanisms.  ...  Listing 1 Semantic-driven smart contract verification algorithm Verification flow modeling tool As a part of the semantic-driven framework for the smart contract verification, we propose the verification  ... 
doi:10.22190/fuacr2001021p fatcat:2lhveuxwa5fd5bt3xucwbvhxfi

A Comparison of Approaches for Visualizing Blockchains and Smart Contracts

Felix Härer, Hans-Georg Fill
2019 Zenodo  
The investigation focuses on design and analysis approaches, concluding with requirements for a visual modelling language.  ...  In this paper we review approaches for visualizing blockchains and smart contracts.  ...  For example, when designing a smart contract, the semantics of the domain concepts modelled must be clear in the context of any of the affected parts of the contract.  ... 
doi:10.5281/zenodo.2585575 fatcat:fi25nf7v5beatmmbhhdasb7n24

TRacer: Scalable Graph-based Transaction Tracing for Account-based Blockchain Trading Systems [article]

Zhiying Wu, Jieli Liu, Jiajing Wu, Zibin Zheng
2022 arXiv   pre-print
This paper models the blockchain transaction records as a blockchain transaction graph and tackles blockchain transaction tracing as a graph searching task.  ...  We propose TRacer, a scalable transaction tracing tool for account-based blockchains.  ...  the complex semantics of transaction actions in DeFi.  ... 
arXiv:2201.05757v3 fatcat:ip6253rukfgvvfe5awwimlkgfq

Automating Privacy Compliance Using Policy Integrated Blockchain

Karuna Pande Joshi, Agniva Banerjee
2019 Cryptography  
Our blockchain based data-sharing solution addresses two of the most critical challenges: transaction verification and permissioned data obfuscation.  ...  We have built a novel framework that integrates semantically rich data privacy knowledge graph with Hyperledger Fabric blockchain technology, to develop an automated access-control and audit mechanism  ...  Acknowledgments: The authors wish to thank Anupam Joshi and Tim Finin for their valuable advice to this project. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/cryptography3010007 fatcat:xq46kdnhd5addhn4wcthb6thiy

Investigation on Blockchain Technology for Web Service Composition

Sridevi S., Karpagam G. R., Vinoth Kumar B., Uma Maheswari J.
2021 International Journal of Web Services Research  
The objective of current work is to investigate the applicability of blockchain for the semantic web service composition process.  ...  The paper focuses on design of conceptual architecture and the algorithm for QoS-aware semantic web service composition (SWSC) using blockchain.  ...  Blockchain "The blockchain is an incorruptible digital ledger created for economic transactions which are programmed to record not just financial transactions but virtually everything of value.  ... 
doi:10.4018/ijwsr.20210101.oa1 fatcat:z4yfa7e5evdhvbvtqrvey6h7gq

Blockchain as an Enabler for Transfer Learning in Smart Environments [article]

Amin Anjomshoaa, Edward Curry
2022 arXiv   pre-print
In this research, we propose a decentralized and adaptive software framework based on blockchain and knowledge graph technologies that supports the knowledge exchange and interoperability between IoT-enabled  ...  Sharing and reuse of these elaborated models between intelligent systems deployed in a different environment, which is known as transfer learning, would facilitate the adoption of services for the users  ...  This work was supported with the financial support of the Science Foundation Ireland grant 13/RC/2094 and co-funded under the European Regional Development Fund through the Southern & Eastern Regional  ... 
arXiv:2204.03959v2 fatcat:n467csmjifdyxhs54n6icwrt6a

Tamper-Proof Privacy Auditing for Artificial Intelligence Systems

Andrew Sutton, Reza Samavi
2018 Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence  
Privacy audit logs are used to capture the actions of participants in a data sharing environment in order for auditors to check compliance with privacy policies.  ...  However, collusion may occur between the auditors and participants to obfuscate actions that should be recorded in the audit logs.  ...  This paper is an abridged version of a paper titled "Blockchain Enabled Privacy Audit Logs" that was nominated for best research paper and best student research paper awards at the "ISWC 2017" conference  ... 
doi:10.24963/ijcai.2018/756 dblp:conf/ijcai/SuttonS18 fatcat:n2i2udkxlbgfdek4qqof7pclni

Leveraging protection and efficiency of query answering in heterogenous RDF data using blockchain [article]

Sara Hosseinzadeh Kassani, Ralph Deters
2019 arXiv   pre-print
Resource Description Framework (RDF), a graph-based data model for describing things (entities), facilitates data integration.  ...  The Semantic Web, an extension of the current web, provides a common framework that makes data machine understandable and also allows data to be shared and reused across various applications.  ...  Blockchain model in the proposed semantic data integration architecture avoids compromising unauthorize data access and protects transactional privacy [22] using a Role-Based Access Control (RBAC) approach  ... 
arXiv:1810.05292v2 fatcat:ievppxhgnbecbj7iloyhxp3kci
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