Blockchain – ICBC 2022. 5th International Conference Held as part of the Services Conference Federation, SCF 2022 Honolulu, HI, USA, December 10–14, 2022 Proceedings

Preface
Organization
Services Society
Services Conference Federation (SCF)
Contents
Research Track
Insights on Impact of Distributed Ledgers on Provider Networks
	1 Introduction
	2 Communication in a DLT
		2.1 DLT Interactions
		2.2 Resulting Communication Patterns
	3 Challenges for Users and Provider Networks
	4 Experimental Insights
		4.1 Topological Measurements
		4.2 Types of DLT Peers
		4.3 Costs for Pool Establishment and Maintenance
	5 Discussion
	6 Conclusion
	References
Legal Service Delivery and Support for the DAO Ecosystem
	1 Introduction
	2 Current State of Centralized Legal Systems
	3 Growth of Decentralized Autonomous Organizations (DAOs)
	4 Need for New Legal Applications for the DAO Development Community
		4.1 Legal System Reform DAO
		4.2 Dispute Resolution DAOs
		4.3 Legal Wrappers and Legal Support DAO for DAOs
	5 Conclusion
	References
i-Bond: A Next Generation Bond’s Issuing Service System
	1 Introduction
	2 Requirement Analysis
		2.1 Traditional Bond Market
		2.2 Limitations on Traditional Bond Issuance Process
		2.3 Requirement Specifications
	3 Architecture Design
		3.1 Data Layer
		3.2 Business Layer
		3.3 Presentation Layer and User Layer
		3.4 System Flow Design
		3.5 Model Design
	4 Issuance Mechanism and Auction Algorithm Design
		4.1 Market Participants
		4.2 Bidding and Issuance Mechanism
	5 Tests and Analysis
	6 Related Work
		6.1 Credit Analysis Research
		6.2 Issuer Information Disclosure
		6.3 The Application of Smart Bond Contracts
		6.4 Industry Practices
	7 Conclusion and Future Work
	References
A UI/UX Evaluation Framework for Blockchain-Based Applications
	1 Introduction
	2 Related Works
		2.1 Limitation and Challenges
	3 Proposed Framework
		3.1 Mapping
		3.2 Adopting Design Patterns and UI Elements
		3.3 Developing Guidelines
		3.4 Identifying User Groups
	4 Experimental Setup
	5 Evaluation of the Proposed Framework on Blockchain-Based Application
		5.1 Mapping
		5.2 Adopting Design Patterns and UI Elements
		5.3 Identifying User Groups
	6 Recommendations
	7 Conclusion
	References
From Business-Level Specifications to Smart Contracts for Blockchain-Based Resource-Exchange Systems
	1 Introduction
	2 Related Work
	3 Framework
	4 Generation of Smart Contracts
		4.1 Mapping Between User Concepts and Blockchain Concepts
		4.2 Generated Smart Contracts
		4.3 Examples
	5 Discussion and Limitations
	6 Conclusion
	References
A Community Detection-Based Blockchain Sharding Scheme
	1 Introduction
	2 Related Work
	3 Proposed Community Detection-Based Sharding Scheme
	4 Experiments
		4.1 Experiment Settings
		4.2 Data Overview
		4.3 Sharding Analysis
	5 Conclusion
	References
A Framework of Runtime Monitoring for Correct Execution of Smart Contracts
	1 Introduction
	2 An Overview of Vulnerabilities in Smart Contracts
		2.1 Overcoming Smart Contract Exploits: A Brief Survey
	3 Runtime Monitoring Framework: A Rationale
	4 Run-Time Monitors to Prevent Unintended Execution Traces
		4.1 Attacks Due to Re-entrancy Vulnerability
		4.2 Mitigation for Attack1 on SimpleDAO
		4.3 Mitigation for Attack2 on SimpleDAO
	5 Run-Time Monitoring to Control Execution Traces
		5.1 Transaction Order Nondeterminism Issue
		5.2 Overcoming Transaction Order Dependency
		5.3 ERC20 Token Standard and Issues of Nondeterminism
	6 Realizing Run-Time Monitors Through Annotations
		6.1 Annotations for Solidity Contracts and Standard Annotations
		6.2 Specification of Annotations
		6.3 Generating Run-Time Monitors from Standard Annotations
		6.4 Declarations in a Shared Variable Programming Language
	7 A Comparative Discussion
	8 Conclusions
	References
Optimized Transaction Processing in Lightweight Distributed Ledger Networks for Internet of Things
	1 Introduction
	2 Related Work
	3 System Design and Implementation
		3.1 Graph Theoretical Description of Tango\'s DAG
		3.2 PITEC Model Basics
		3.3 Formulas to be Used in Future Physical Experimental Setup
	4 Proposed Future Work
		4.1 Network Implementation
	5 Conclusion
	References
Short Paper Track
Shackled: A 3D Rendering Engine Programmed Entirely in Ethereum Smart Contracts
	1 Introduction
	2 Related Work
	3 Datasets
	4 Approach
		4.1 Development
		4.2 Design of the Rendering Pipeline
		4.3 Deployment
	5 Results and Discussion
		5.1 Computation Scales Quadratically with Canvas Size
		5.2 Computation Scales Linearly with the Number of Triangles Rendered
		5.3 Backface Culling Reduces Computation Significantly
	6 Conclusion and Future Work
	A  Environmental Considerations
	B  Data Availability and Reproducibility
	References
Author Index