scholarly journals Blockchain-based Trusty Buyer Coalition Scheme Using A Group Signature

Author(s):  
Laor Boongasame ◽  
Supansa Chaising ◽  
Punnarumol Temdee

Without trust, buyers may not join a coalition. Despite the tremendous need for trustworthy relationships in buyer coalitions, no current buyer coalition scheme explicitly tackles confidence issues with blockchain technology. This study proposes an algorithmic design, the blockchain-based trusty buyer coalition scheme, to satisfy the trust requirement among different actors while forming the coalition. All activities forming a coalition through a decentralized public ledger can be explicitly examined. Consequently, the proposed algorithm can ensure anonymity within a community, resulting in trusting relationships. Furthermore, the proposed algorithm can ensure correctness and accountability by recognizing misbehavior and enforcing alternative forms of punishment. Additionally, the discovered algorithm can be applied to mobile commerce applications.

Author(s):  
Shreya Joshi ◽  
Ms Bhavyaa ◽  
Suhani Gupta ◽  
Lalita Luthra

Blockchain is considered to be a disruptive core technology. Although many researchers have realized the importance of blockchain, but the research of it is still emerging. It is the record-keeping technology behind bitcoin and is one of the hottest and fastest growing skills in the IT sector today. It serves as an immutable ledger which allows transactions to take place in a decentralized man Blockchain-based applications are rising up, covering numerous fields including finance, healthcare, product management, Internet of Things (IoT), and many more. However, there are still some challenges of blockchain technology such as scalability and security problems which need to be overcome. This paper comprises of a comprehensive study of Blockchain technology. We have included here a deep dive into how blockchains work, its architecture, consensus and various applications. Furthermore, technical challenges are briefly listed.


2014 ◽  
Vol 3 (1) ◽  
pp. 45
Author(s):  
Jafiansyah Jafiansyah ◽  
Delpiah Wahyuningsih
Keyword(s):  

Perkembangan bisnis di era modern ini memicu persaingan bisnis yang semakin ketat. Sistem penjualan atau marketing pun ditingkatkan guna mempertahankan dan meningkatkan pemasaran produk. Sistem penjualan yang dengan teknologi modern akan menjadi  alternatif penjualan yang baik. Dengan memanfaatkan teknologi smartphone, M-Commerce (Mobile Commerce) adalah sistem perdagangan yang dilakukan dengan media portable ataupun perangkat bergerak seperti Smartphone, PDA, dan lain-lain.sistem akan dikembangkan dengan menggunakan metode pengembangan dan pemrograman perangkat lunak yang berorientasi objek (OOP). M-Commerce dibangun dengan tujuan dapat meningkatkan penjualan Kinza Collection serta menjadi pemasaran yang bagus untuk dikenal oleh masyarakat Bangka Belitung serta seluruh Indonesia. Sistem ini menghasilkan sebuah apliksi M-commerce dengan memanfaatkan sistem aplikasi android pada smartphone, M-Commerce menjadi solusi untuk mengatasi permasalahan pada Kinza Collection. yang akan memudahkan konsumen untuk melakukan pemesanan barang atau transaksi dan juga dapat menambah omset penjualan toko. Sehingga aplikasi Mobile Commerce ini, mudah dalam melakukan transaksi, efektif, efisien dan tentunya dengan cakupan wilayah penjualan yang lebih luas serta menambah omset penjualan pada Kinza Collection


2019 ◽  
Vol 5 (1) ◽  
pp. 15-22
Author(s):  
Ardian Thresnantia Atmaja

The key objectives of this paper is to propose a design implementation of blockchain based on smart contract which have potential to change international mobile roaming business model by eliminating third-party data clearing house (DCH). The analysis method used comparative analysis between current situation and target architecture of international mobile roaming business that commonly used by TOGAF Architecture Development Method. The purposed design of implementation has validated the business value by using Total Cost of Ownership (TCO) calculation. This paper applies the TOGAF approach in order to address architecture gap to evaluate by the enhancement capability that required from these three fundamental aspect which are Business, Technology and Information. With the blockchain smart contract solution able to eliminate the intermediaries Data Clearing House system, which impacted to the business model of international mobile roaming with no more intermediaries fee for call data record (CDR) processing and open up for online billing and settlement among parties. In conclusion the business value of blockchain implementation in the international mobile roaming has been measured using TCO comparison between current situation and target architecture that impacted cost reduction of operational platform is 19%. With this information and understanding the blockchain technology has significant benefit in the international mobile roaming business.


Author(s):  
Myroslav Kosіak ◽  
Inna Kosіak

The purpose of the article. The article considers the Blockchain technology asan innovative tool. In particular, the essence and background of the developmentof blocks, the principles and specifics of the functioning of the system, as well asthe scheme of its work, are determined. The article presents the prospects forusingdistributed registry technologies (blockchain) in various socioeconomic spheresrelated to state administration. Provided examples and forecasts of the use ofblockchain technologies in the provision of state and municipal services forindividuals and legal entities in the following areas: formation of a unified registercontaining the history of the placement of the state, municipal order, as well asprocurement of corporations with state participation and / or control; registers ofdocuments (diplomas, certificates, lost and disavowed passports, policies for movableand immovable property insurance, health, etc.); database of court decisions andexecutive proceedings; public participation portals for citizens of Ukraine district- city – country. The fact that the blockchain technology is, first of all, theprinciples, and not the only possible way of implementing them, allows us to counton maximum openness and multivariate application in a dynamically changingchanging«digital world». Methodology. The research methodology is to use a combinationof methods: analytical, historical, comparative. The scientific novelty. The priorityof state blockchain systems introduction in stationary and distant voting, distributeddocument circulation, medical data registration, land resources registration,electronic auctions (auctions) in Ukraine was grounded. Conclusions. Already today,blockchain systems can change the role and participation of citizens in the conductof the state-management process, by raising the responsibility level, from thetransparent will expression in the elections to regulating the government serviceactivity in the society’s digitization conditions. The main advantages blockchainsystems using by public authorities that will increase the level of citizens trust todigital technologies using in general, namely: reliability and reliability of datastorage, transparency of transactions and virtually absolute protection of informationfrom distortion and unauthorized removal (relocation), are determined. In furtherscientific research it is proposed to consider the promising areas of the blockchaindigital technology usage: service activities of public authorities, legal proceedings,property rights management, implementation of migration control, verification ofgoods and services, registration of data on passing qualifying tests, patenting,intellectual property, digital identification, logistics , taxation, accounting ofbudget funds movement.


2000 ◽  
Vol 29 (12) ◽  
pp. 684-691 ◽  
Author(s):  
Klaus-Peter Wiedmann ◽  
Holger Buxel ◽  
Frank Buckler
Keyword(s):  

2016 ◽  
Author(s):  
Marco Hubert ◽  
Markus Blut ◽  
Christian Brock ◽  
Christof Backhaus ◽  
Tim Eberhardt

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