Blockchain Papers

Tabassum Tanzim Nawar, Farah Jasmin Khan, Joya Akter, Arnab Saha Authro · 6 authors

No abstract is available for this record.

Xue Ze, Tianyu Zhao, Isabella Hao, Lili Wei

No abstract is available for this record.

Edi Surya Negara, Sulaiman Sulaiman, Ria Andryani, Prihambodo Hendro Saksono · 5 authors

Non-Fungible Token (NFT) is a digital asset that cannot be exchanged or used, and uses Crypto currency values according to the type of digital money used, for example Bitcoin, Ethereum.The NFT Marketplace is a platform for buying and selling NFT like Tokopedia.This common problem is often encountered in e-commerce, especially in the NFT Marketplace, among other buyers often having difficulty finding products.This makes it difficult for the NFT Marketplace and sellers to promote products that match the preferences of potential buyers.A recommendation system that is very much needed in overcoming these problems, responding to these problems the author tries to make a recommendation system using the Content Based Filtering approach using the cosine similarity.The results of this study indicate that the Machine Learning model can provide Top-N recommendations from the product being sought.

Tuure Tuunanen, Tilo Böhmann, Jan Leimeister

The purpose of the minitrack is to attract research on the innovation, design, development, management, and use of digital services and the digitalization of services.The key drivers in this area of research are the multiplying technological opportunities for digital services, such as ubiquitous connectivity, artificial intelligence, wearable devices, cyber-physical systems, Internet of Things (IoT), virtual/augmented reality, web3, and so on.The minitrack provides a discussion forum for researchers interested in theoretical and practical problems related to such services (Huang & Rust, 2013;Lusch & Nambisan, 2015).

Jinyoung Han, Min-Jeong Lee, Ji-In Lee

대체불가토큰(Non-Fungible Token: NFT)은 현재 예술, 엔터테인먼트, 게임을 중심으로 급성장하고 있으며, 메타버스를 중심으로 패션, 마케팅 산업에도 적극적으로 도입되고 있다. NFT는 이제 산업이 형성되고 있어 NFT와 관련된 연구는 아직 탐색적인 수준이다. 본 연구에서는 2018년부터 2022년 6월까지 출간된 NFT 관련 국내외 논문 각각 95편, 153편의 서지정보를 LDA 기법으로 토픽모델링을 수행하였다. 이를 통해 키워드간 관계성, NFT 관련 분야 전체 연구의 구조를 살펴보고 국내외 NFT 관련 연구 주제의 유사점과 차이점을 비교하였으며, 분석결과와 선행연구를 기반으로 NFT 분야의 향후 연구 방향을 제시하였다. 본 연구는 NFT 관련 국내외 연구를 통합하여 진행한 첫 리뷰 연구로서 의의가 있으며 실무적으로 NFT 산업 초기 단계에 정부가 관련 정책 수립하는데 현황을 파악하고, 정부의 역할을 인지하는데 기여할 것으로 기대한다.

Youngmo Kim, Byeongchan Park, Seok-Yoon Kim

Theme, background and signal music is the music inserted into broadcasting contents of a broadcaster, and is recognized as a created content like normal music. Since there are lyricists and composers who have the rights of music, the copyright fee is distributed. However, there often occur problems with inaccurate monitoring results for theme, background and signal music usage due to the omission of usage details and non-transparent settlement method. In this paper, we propose a method of generating music usage monitoring information based on a blockchain, on which the usage information of music source is recorded by the usage monitoring tool based on the feature-based filtering technology of monitoring organizations. The framework proposed in this paper includes a blockchain network structure, a series of transaction procedures in which the theme, background and signal music usage history is stored and the recorded data format in the blockchain ledger. In the proposed framework, accurate music usage details can be created, details are stored in blocks without changes or omissions, and eventually transparent settlement and distribution are possible by processing smart contract, instead of previous non-transparent settlement practice.

Yangsun Lee

The hyperledger fabric is a modular blockchain framework used by private companies to develop blockchain-based products, solutions, and applications using plug-and-play components. The smart contracts operating in this framework is created by implementing a chaincode. When implementing a chaincode, there may be a security weakness inside the code, which is the root cause of the security vulnerability. However, when the contract is completed and the block is created, the chaincode cannot be arbitrarily modified, so the security weakness must be analyzed before execution. This paper conducted a study on chaincode intermediate code generation for security weakness analysis of chaincode operating in hyperledger fabric blockchain framework. Analysis of security weaknesses at the source code level is not easy because the code logic is not clear and the complexity is high. On the other hand, security weakness analysis at the intermediate code level is easy to analyze because the code logic of the source code is clearly represented and the complexity is lower than that of the source code.

Authors unavailable

Industry 4.0 comprises of some disruptive technologies which are creating a significant impact in every fields. Recent development in these technologies has created a huge impact in the conventional supply chain model which forces the companies to evolve new models to face the upcoming challenges. One such promising technology which will disrupt and change the entire view of supply chain transparency is Blockchain. Blockchain is basically a chain of blocks that contain information that is nearly impossible to tamper. Blockchain is defined as stack of information linked with each other in blocks and highly resistant to changes. It is a distributed ledger completely open to everyone. Once we enter data in Blockchain it becomes nearly impossible to change it which will give us the authenticity of the data. Based on the literature study, we found that integrating Blockchain in the supply chain will improve the efficiency of the supply chain exponentially. Every transaction that happens in a supply chain can be integrated and recorded in the blocks of a decentralized Blockchain (Distributed ledger) which will be shared will many computers thus increasing the transparency. As each block is connected with each other it becomes nearly impossible to change the entered record as tampering a single block may result in complete loss of data. This will improve the transparency of the supply chain in every stage and improve the supply chain security and efficiency.

Johann Stockinger

Durch die steigende Popularität von Bitcoin steigen auch die Anforderungen von Benutzern nach effektiven Techniken zur Wahrung ihrer Privatsphäre. Zwei häufig empfohlene Dienste sind Wasabi Wallet und Samourai Wallet, welche durch CoinJoins das robuste und sichere Vermischen von Bitcoins versprechen. Diese Arbeit untersucht die Rolle dieser beiden Dienste im Bitcoin Ökosystem, wie sich diese Rolle im Laufe der Zeit entwickelt hat und ob es möglich ist, Benutzer dieser Dienste zu deanonymisieren. Um die Rolle beider Dienste zu analysieren werden Heuristiken entwickelt, welche die CoinJoin Transaktionen von Wasabi Wallet und Samourai Wallet erkennen. Auf Basis der so entdeckten Transaktionen wird sichtbar, dass sowohl die Anzahl der Transaktionen als auch die Anzahl der vermischten Bitcoins stetig wächst, was auf eine wachsende Nutzerbasis hinweist. Darüber hinaus wurden Adressen von Entitäten, welche in Verbindung zu kriminellen Aktivitäten wie Ransomware und Service-Hacks stehen, in der Nähe von CoinJoin Transaktionen beider Dienste identifiziert. Schlussendlich wird das zugrundeliegende System beider Dienste in Hinblick auf Diebstahl, Denial-of-Service sowie Deanonymisierung von Benutzern analysiert. Es wird gezeigt, dass ein bösartiger CoinJoin-Koordinator theoretisch Nutzer deanonymisieren kann, dies jedoch nur in einer eher offensichtlichen Art, welche zu nachträglichem Misstrauen führen kann. Des Weiteren sind sowohl Wasabi Wallet als auch Samourai Wallet robust gegenüber Diebstahl und verfügen über Maßnahmen gegen Denial-of-Service Angriffe.

Sanya Dod

No abstract is available for this record.

Tri Wahyuningsih, Gunawan Gunawan, Fitra Putri Oganda, Mey Anggraeni

With the approaching of the digital age, digital education resources bring convenience to folks as a result of they're liable to duplicate and spread, however there are some disadvantages in on-line education service transactions. The safety problems with digital education resources and also the development of smuggled distribution seriously harm the rights and interests of the house owners of digital education resources. supported this, during this paper, we have a tendency to planned a blockchain-based digital education resources authentication system that uses the decentralized, tamper-resistant options of blockchain technology to store the digital education resources info within the style of a secret text. Within the system, there is no have to be compelled to need the participation of any third-party institution. The system planned during this study can greatly defend the rights and interests of the owner of digital education resources.

Junchao Xia

Bitcoin is an essential component in the cryptocurrency system and plays a vital role in the economic system. This paper uses analytical methods to conduct in-depth research on Bitcoin. I will explain their opinions about its ability to invest and risk diversification, and then we try to verify some conclusions of the MPT model. First, my research shows that based on the modern portfolio theory, the risks of bitcoin could be diversified with some trading assets on the actual market. Second, two essential risks of Bitcoin are the legality and the cyber risk. On the one hand, the research in this article provides a theoretical speech on Bitcoin. On the other hand, it provides theoretical suggestions for the application and development of Bitcoin.

Byeongtae Ahn

No abstract is available for this record.

Choong‐koo Chang

In nuclear power plants, plant management systems are not only very important for operation and maintenance of the facilities, but also play a very important role in analyzing and reporting the events to the authorities when a failure or accident occurs in the facility. In addition, it is also important to ensure that event records are managed transparently so as not to cause any attempt to cover up events. Therefore, this paper proposes a tamper free plant operation system by applying blockchain technology to the integrated plant management system of Korea hydro and nuclear power (KHNP). As a result, this paper will contribute to improving public acceptance by eliminating distrust in safe operation of nuclear power plants.

Seong-Kyu Kim, Jun‐Ho Huh

This paper seeks to use artificial intelligence blockchain algorithms to ensure safe verification of medical institution PHR data and accurate verification of medical data as existing vulnerabilities. Artificial intelligence has recently spread and has led to research on many technologies thanks to the Fourth Industrial Revolution. This is a very important factor in healthcare as well as the healthcare industry’s position. Likewise, blockchain is very safe to apply because it encrypts and verifies these medical data in case they are hacked or leaked. These technologies are considered very important. This study raises the problems of these artificial intelligence blockchains and recognizes blockchain, artificial intelligence, neural networks, healthcare, etc.; these problems clearly exist, so systems like EHR are not being used. In the future, ensuring privacy will be made easier when these EHRs are activated and data transmission and data verification between hospitals are completed. To overcome these shortcomings, we define an information security blockchain artificial intelligence framework and verify blockchain systems for accurate extraction, storage, and verification of data. In addition, various verification and performance evaluation indicators are set to obtain the TPS of medical data and for the implementation of standardization work in the future. This paper seeks to maximize the confidentiality of blockchain and the sensitivity and availability of artificial intelligence.

Vanja Ivljanin

Die Allgegenwärtigkeit des Internets macht es zu einer wertvollen Datenquelle. Produkte wie Twitter und Google Trends implementieren APIs die es erlauben diese Daten zu nützen. Da diese zwei Produkte große Mengen von Nutzerdaten speichern, kann man Sie nützen um Vorhersagen über das Benutzerverhalten in bestimmten Bereichen zu machen. In dieser Arbeit, beschreiben und implementieren wir statistische Method um Vorhersagen über den Bitcoin Wechselkurs mittels Stimmungsanalyse, der Frequenz von Tweets über Bitcoin und dem Interessenniveau zum Suchbegriff Bitcoin. Weiters zeigen wir wie das stündliche Handelsvolumen von Bitcoin mittels der stündlichen Rate von Tweets über Bitcoin und Google Trends Daten vorhergesagt werden kann. In dieser Arbeit analysieren wir Daten aus dem Zeitraum Juli 2018 bis August 2018, d.h. zwei Monate. Erstens benützen wir die stündlichen Informationen über Tweet Stimmung, Tweet Frequenz und Google Suchdaten über Bitcoin um eine kausale Verbindung zwischen diesen Daten und dem aktuellen Preis von Bitcoin. Zweitens entwickeln wir ein vektorautoregressives Modell (VAR) dass erfolgreich den Bitcoin Wechselkurs und das Bitcoin Handelsvolumen vorhersagt. Weiters, verwenden wir zwei unterschiedliche Algorithmen, SentiStrength and Stanford Core NLP, um Stimmungsinformation zu erhalten. Wir zeigen dass mit dem SentiStrength Algorithmus welcher für kurze Nachrichten wie Tweets geeignet ist unser Modell bessere Resultate erzielt. Spezifisch, zeigen wir dass unser Modell wenn kombiniert mit SentiStrength eine Genauigkeit von 63% für Vorhersagen bezüglich dem Anstieg und Abstieg des Bitcoin Wechselkurses aufweist. Auf der anderen Seite, wenn man unser Modell mit Stanford Core NLP kombiniert erhalten wir eine Genauigkeit von 59%. Drittens, benutzen wir die Tweet-Frequenz und Suchinformationen um das Bitcoin Handelsvolumen mit einem mittleren quadratischen Fehler von 172.76 vorherzusagen. Zusammenfassend, zeigen wir in dieser Arbeit dass Informationen von Twitter und Google Trends sehr hilfreich sind wenn es um die Vorhersage zwei wichtiger Bitcoin Eigenschaften, Wechselkurs und Handelsvolumen, geht.

Samer Ajour El Zein et al. Samer Ajour El Zein et al., TJPRC

A sea of doubt surrounds the technology that promises to completely change the economic paradigm, Bitcoin. A 365degree turn to the monetary system that promises an intangible currency, with a peer to peer (P2P) trust system, without intermediaries and based in a revolutionary technology, Blockchain.

Hosung Wang, Shinhye Moon, Nungwoo Han

No abstract is available for this record.

Adjunct Professor, Hoseo Univ., 212-1103, 346-2, Sangdo-ro, Dongjak-gu, Seoul, Republic of Korea, Joon-Hee Kim

Blockchain technology is a scientific and technological project that countries around the world have been paying close attention to and researched and developed in recent years, and it is one of the most popular technologies in the world. Blockchain is a kind of bookkeeping technology that is jointly maintained by multiple parties, uses cryptography to ensure transmission and access security, can achieve consistent data storage, is difficult to tamper with, and prevents denial. It is also called distributed ledger technology and has distributed credibility. Technical characteristics such as not easy to be tampered with, and multi-party maintenance. The new infrastructure of chain network collaboration will use network identification as a key digital resource as a breakthrough point to promote the application and development of blockchain and realize the engine role of new infrastructure. Through the collaborative development of blockchain and the industrial Internet, the new infrastructure of chain network collaboration is committed to building a national-level distributed trusted application innovation carrier. Provide a unified identity authentication mechanism, object identification mechanism, and value exchange mechanism for digital applications to reduce the cost of using digital technology.

N Shruthi, C N Sowmyarani

<em>Any number of gadgets can be associated with a Wi-Fi remotely. Anybody inside scope of the Wi-Fi can endeavour to get to the system. Due to this, Wi-Fi is progressively powerless against assaults. Consequently, client touchy data is at the danger of being misused. The clients’ security and security can be ensured by unknown verification. When they use the hotspots that are very easy to access to everybody, privacy plays an important role. The existing solutions which will validate the users but do not take the responsibilities of the users or they are always dependent on intermediators. The latest development of or concept of colored coins and coin shuffle can be used to protect the users who are connected to the network without compromising or leaking any information. The bitcoin blockchain is very impressive and robust that will help to manage the user information and also very helpful to determine the possession of the users framework.</em>

Won-Yong Jeong, Min Choi

In this paper, we present a certificate management platform for performance assessment during recruitment using blockchain. Applicants are awarded certificates according to a predetermined level of progress based on their performances. All certificates are stored on a recruitment management platform that serves as an environment for storing and presenting all awarded certificates. The hashed information of all the certificates are stored in the blockchain, and once stored, the contents cannot be tampered with. Therefore, anyone can check the validity of the certificates using this blockchain. Our proposed platform will be useful for recruitment and application management, career management, and personal history maintenance.

J.-B. Kim, Hyung-Woo Park

No abstract is available for this record.

Minjae Yoo, Yoojae Won

Over the past few years, the importance of improving the product distribution structure has increased worldwide. Therefore, distribution prices are now disclosed and product information is shared with consumers. However, distribution channels are complex and supply chain management (SCM) is autonomously executed in each company. For this reason, it has been frequently pointed out that the distribution process is not transparent and the distribution margin is high. In this paper, we propose a system that guarantees the transparency of the product distribution structure by applying blockchain and smart contracts to the price-tracking portion of supply chain management systems. This approach allows companies to track their trades by enhancing transparency in the SCM, thereby discouraging companies from pursuing excessive profits. In addition, companies can cut management costs by automatically storing distribution details in a blockchain network and managing information more securely.

Ki-Heung Kim, Jae-Hyun Shim

Purpose - The purpose of this study is to subdivide trade transaction-centered structure in a logistics/distribution industry system to apply blockchain, to establish and resolve with which types of technology, and to provide policy direction of government institution and technology to apply blockchain in this kind of industry. Research design, data, and methodology - This study was conducted with previous researches centered on cases applied in various industry sectors on the basis of blockchain technology. Results - General fields of blockchain application include digital contents distribution, IoT platform, e-Commerce, real-estate transaction, decentralized app. development(storage), certification service, smart contract, P2P network infrastructure, publication/storage of public documents, smart voting, money exchange, payment/settlement, banking security platform, actual asset storage, stock transaction and crowd funding. Blockchain is being applied in various fields home and abroad and its application cases can be explained in the banking industry, public sector, e-Commerce, medical industry, distribution and supply chain management, copyright protection. As examined in the blockchain application cases, it is expected to establish blockchain that can secure safety through distributed ledger in trade transaction because blockchain is established and applied in various sectors of industries home and abroad. Parties concerned of trade transaction can secure visibility even in interrupted specific section when they provide it as a base for distributed ledger application in trade and establish trade transaction model by applying blockchain. In case of interrupted specific section by using distributed ledger, blockchain model of trade transaction needs to be formed to make it possible for parties concerned involved in trade transaction to secure visibility and real-time tracking. Additionally, management should be possible from the time of contract until payment, freight transfer to buyers through land, air and maritime transportation. Conclusions - In order to boost blockchain-based logistics/distribution industry, the government, institutionally, needs to back up adding legal plan of shipping, logistics and distribution, reviewing standardization of electronic switching system and coming up with blockchain-based industrial road maps. In addition, the government, technologically, has to support R&D for integration with other high technology, standardization of distribution industry's blockchain technology and manpower training to expand technology development.