blockchain 2021




Red Belly: a secure, fair and scalable open blockchain
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Initially, all nodes have a copy of a special block called the genesis block of the blockchain that indicates the initial balance of some addresses (ie, accounts) and the identities of the permissioned nodes identified by their public keys

Modeling Identity Management System Based on Blockchain Technology
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The name Blockchain alludes to a specific sort of information structure where each block speaks to a gathering of advanced exchanges and the chain alludes to how each block is connected to guarantee that exchanges are recorded in a particular, unalterable request as in

Emerging applications of blockchain technology
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Character of Nakamoto remains unknown till this day. On January 200 the bitcoin organization was made when Nakamoto mined the primary square of the chain referred to as the genesis block II. BLOCKCHAIN

Credible and Non-Corruptible Supply Chain Management using Blockchain Technology
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Globalization of supply chains makes their administration and control increasingly troublesome. Blockchain technology, as a dispersed computerized record innovation that guarantees straightforwardness, credibility, and security, is indicating guarantee for

Smart contract model for trust based agriculture using blockchain technology
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are met. For instance, after a terrible bunch of lettuce brought about clients getting wiped out from e-coli, Walmart and IBM made a Blockchainbased flexibly chain to follow produce from homestead to table. Walmart has requested

Going from bad to worse: from internet voting to blockchain voting
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subsection, New problems blockchains introduce , dis- cusses how blockchainbased electronic voting could create add- itional problems for election systems. Finally, the fifth subsection, Voting within blockchains , describes voting used within block chain technology, which

Blockchainbased Electronic Health Record System for efficient Covid-19 Pandemic Management
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4], . Blockchain is a particular case of Distributed Ledger Technology (DLT) . This distributed network of computer nodes cer- tifies a solitary system could not add invalid or illegal blocks to the specific chain . Whenever a unique block is supplemented to a blockchain it is

chainifyDB: How to get rid of your Blockchain and use your DBMS instead.
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protocol to validate transactions, group them into blocks, and build a hash chain over the infras- tructures, which already consist of several database man- agement systems, with blockchain functionality as a Figure 3 shows how to process a block of an update, delete, and insert The flyer is processed by the virtual chain and is written into the blockchain as an additional field of block . It achieves a certain degree of weight reduction by avoiding the extra overhead of nodes maintaining the two blockchains at the same time

Amalgamation of Blockchain Technology and Knowledge Management System to fetch an enhanced system in Library
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Each square remembers the cryptographic hash of the earlier square for the blockchain connecting the two. The connected squares structure a chain . This iterative procedure affirms the respectability of the past square, right back to the first beginning square This is Page 9. 293 1 3 Blockchaintechnology in the energy industry: blockchain Smart-Energy is a collective term for so-called intelligent technologies along the entire value chain (generation, networks, trade, distribution, consumption) in the energy industry

The impact of blockchain on e-commerce: a framework for salient research topics
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Each new block is slightly modified by trial and error until it meets certain mathematical conditions. As participants only add validated blocks to their copies of the blockchain the resulting chain represents the consensus of computing power in the system

A Blockchain Based Framework for Stomach Abnormalities Recognition
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An existing block chainbased approach is employed in a convolu- tional neural network model Our major contributions are as follows: Blockchain technology in CNNs has been implemented to Each CNN model layer contains an extra block which stores certain information to

Performance Analysis of Cryptographic Hash Functions Suitable for Use in Blockchain .
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Received: 30 June 2020; Accepted: 21 October 2020; Published: 08 AprilAbstract: A blockchain or in other words a chain of transaction blocks, is a distributed database that maintains an ordered chain of blocks that reliably connect the information contained in them

Chip of the New Block ( Chain ): Blockchain and the Construction Sector
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3 contents. executive summary 4 introduction 6 what is blockchain 7 blockchain : a brief history 8 blockchain and the construction industry 12 chip of the new block ( chain ): a research project 14 benefits of blockchain : smart contracts 16 traditional contracts: alliancing

Blockchain for automotive: An insight towards the IPFS blockchainbased auto insurance sector.
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If the miners dont approve the activity, then the transaction gets aborted and the block is not added to the blockchain 2454 [23] J. Chen, et al., A BlockchainDriven Supply Chain Finance Application for Auto Retail Industry, Entropy, vol. 2 no. p. 9 The computational intensiveness of the public block chain is also a drawback. Typically, public blockchain has poor performance (in terms of transactions processed per unit time) and high latency (Lin and Liao 2017; Park and Park 2017). Page 13. 81 1 3

Zero E-waste: Regulatory impediments and blockchain imperatives
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Other emerging Block chain platforms relevant to E-waste management is Cobalt Blockchain (COBC), a Canada-based operation that was the first such company established specifically to comply with the guidelines established by the Organization for Economic Co-operation

Blockchain : The Next Stage of Digital Procurement in Construction
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a blockchain ledger are interlinked by using hashing algorithms to form a chain of blocks Blockchain networks typically utilise asymmetric public-key cryptography to digitally sign transactions in a environment, and a consensus mechanism ensures that a new block containing

Case Study of Blockchain Applications in Supply Chain Management-Opportunities and Challenges
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Blockchain and its related technologies start to present business values recently. This research analyzes blockchain adoption within the field of supply chain management by looking at companies that have already put blockchain technology into practice. Fascination

Unchaining Collective Intelligence for Science, Research, and Technology Development by BlockchainBoosted Community Participation
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17This philosophy is also carved into Bitcoins genesis block stating The Times 03/ quality or even forgery and would thus devastatingly undermine trust in blockchaincontrolled processes Access to reliable off- chain facts by properly vetted and incentivized reporters is thus

Research on the Reciprocal Mechanism of Hybrid Governance in Blockchain
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Three methods of blockchain governance: on- chain governance, off- chain governance and hybrid governance. (Chao) Blockchain maintains the on- chain sustainable fundamentals as a technological governance tool

ENGINEERING IN DIGITAL LEGAL PROCEEDINGS IN THE ASIA-PACIFIC REGION: A NEW LEVEL OF QUALITY BASED ON DATA, BLOCKCHAIN AND AI.
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UDC 005.591.1 DOI 10.24874/IJQR15.01-16 INDUSTRIAL AND MANUFACTURING ENGINEERING IN DIGITAL LEGAL PROCEEDINGS IN THE ASIA-PACIFIC REGION: A NEW LEVEL OF QUALITY BASED ON DATA, BLOCKCHAIN AND AI

Using blockchain to trace PDO/PGI/TSG products
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Blockchain based wine supply chain traceability sys- tem. In Future Technologies Conference (FTC) Cruz, EF and Cruz, AM (2020) The im- pact of blockchain on food supply chain : The case of walmart. In International Conference on Smart Blockchain . Tian, F. (2017)SCont) (Wasananikornkulchai, L. 2019), which is a program to control the operation of Blockchain to create a new block of data, it is the information that records the data chain When used in the Construction Engineering industry, it creates contract management in engineering

A Still Simple Multi-candidate Voting Protocol on Quantum Blockchain
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are initiated by those nodes that wish to append some new data to the chain K., Imoto, N.: Cheat-sensitive commitment of a classical bit coded in a block of m Sun, X., Sopek, M., Wang, Q., Kulicki, P.: Towards quantum-secured permissioned blockchain : Signature, consensus

Application and Prospect of blockchain technology in Chinas commercial banks
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449 Page 2. 2. THE NECESSITY OF APPLYING BLOCK CHAIN TECHNOLOGY TO CHINAS COMMERCIAL BANKS Because every block node in the blockchain system can automatically copy and share all the information data, commercial banks can obtain all kinds of

Resilient Features Of Organizational Culture In Implementation Of Smart Contract Technology Blockchain In Iraqi Gas And Oil Companies
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RESILIENT FEATURES OF ORGANIZATIONAL CULTURE IN IMPLEMENTATION OF SMART CONTRACT TECHNOLOGY BLOCKCHAIN IN IRAQI GAS AND OIL COMPANIES Smart contracts and a blockchain platform that can execute them has a variety of possible use cases

Who Stores the Private Key An Exploratory Study about User Preferences of Key Management for Blockchainbased Applications.
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of the signature is done by all blockchain nodes during the block validation process paperwork are reasons why blockchains were proposed to be used for supply chain management (Apte For authentica- tion and authorization of identities, a blockchain can be beneficial in order

Query Optimization in a BlockchainBased Land Registry Management System.
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Nguyen and Kim [20] explain the PoW is one of the most popular consensus algorithms in the bitcoin cryptocurrency blockchain network. They accept the longest chain as the valid chain that depicts the systems historical transactions [21] employ blocktransfer strategies to

Application of Blockchain Technology in the Field of International Logistics
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The business records of all block chain information systems are true and credible, permanently stored and cannot be tampered with large-volume commodity orders, documents such as bills of lading and waybills are the core logistics documents, and blockchain technology can

Blockchain based framework and approach for global healthcare system
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commit mode are added to form a list of blocks. Each transaction is referred as block that is added in a chain like structure forming a blockchain . The crucial features of blockchain are decentralization, determination, obscurity and auditability. Blockchain is enabled by integration

SECURE STORAGE AND ACCESS SCHEME FOR E-MEDICAL RECORDS USING BLOCK CHAIN ENVIRONMENT
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Blockchain have been a fascinating exploration region for quite a while and the advantages it gives have been utilized by various different ventures. Additionally, the medical services area stands to profit tremendously from the blockchain innovation because of safety

Creating a Digital Marketplace for Agrobiodiversity and Plant Genetic Sequence Data: Legal and Ethical Considerations of an AI and Blockchain Based Solution
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Before discussing the options offered by blockchain (or, more specifically, by Distributed Ledger Technologies (DLT)), it is useful to take a quick The culture of sharing prevalent among farmers, their inability to monitor the chain of transfer of ownership and the specific end use(s

Rethinking the Concept of the Education through Digitalization of Higher Education Institutions and Blockchain
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Rethinking the Concept of the Education through Digitalization of Higher Education Institutions and Blockchain Ekrem Nurović1 Mersid Poturak2 In the future by 2040, the technology of blockchain will play an important role in university accreditation and student evidence

ENHANCED HEALTH RECORD SHARING USING BLOCKCHAIN
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Medical chain tokens or MEDTokens can be used to pay for hosting and storage of records on private blockchain A block is created for each patient records In this paper we present a blockchain based patient information record which can be used to store the personal and

Overview of Blockchain Technology: Consensus Algorithms, Applications
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The immutable nature of Blockchain makes it harder to change the records or transaction, unless as explained by S. Nakamoto, the attacker should posses the computing power to redo the proof-of-work of the block and all the blocks in the chain . Each record is available to

Secure and Efficient Data Storage and Sharing Scheme Based on Double Blockchain
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Only when 51% of the participating nodes in the blockchain network reach a consensus can the block be validated and added to the blockchain . All legal transactions are stored in data blocks. The basic structure of the blockchain is shown in Fig. 1

Making Cloud More Secure using Blockchain : Structured Analysis
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These electronic coins are a chain of digital signatures The friends taking part in the system have the equivalent blockchain and the exchange information are put away in hinders similarly as the conveyance stockpiling of exchanges. III

Blockchain Technology Adoption in Smart Learning Environments. Sustainability 202 1 1801
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equation modeling. The results showed that compatibility had a significant impact on block chain use in smart learning environments. Other significant effects were also found on adoption of blockchain technology. This study