Emerging blockchain-based applications and techniques

Abstract

The primary mission of the blockchain is to establish a creditworthy ecosystem among independent participants in a nontrustable distributed environment. A blockchain system is secure and autonomous based on its chained blocks, peer-peer nodes, consensus-based ledger mechanism, anonymous accounts, self-regulated data ownership, and programmable smart contracts. There are continuous arguments at which features from Bitcoin are fundamental for blockchains and what are changeable. Furthermore, a devoted credit system is required to make blockchain systems creditworthy although blockchains provide a creditworthy infrastructure for data-level storage and operations. The necessity, feasibility, efficiency, and expected benefits are crucial factors to evaluate a blockchain venture. Several popular and promising blockchain techniques are underdeveloped; among them are those for blockchain creditworthiness, performance, efficiency, security, privacy, supervision, and online-to-offline integration. A new prosperity of the blockchain is on its way since two symbolic projects, the Libra by Facebook and the DCEP by Central Bank of China, were announced.

Blockchain for COVID-19 Patient Health Record

“…In a Blockchain participants [13] play the role of a producer or consumer wherein they own, control and have the privileges to the data in the block. The contents once inserted in a block are said to be irreversible and such objects of value are termed as assets [14].…”

Analysis of the international experience of implementing blockchain technology

“…A blockchain (English: Block chain or chain of blocks) is a continuous sequential chain of blocks (linked list) that contains information in accordance with certain rules. Most often, blockchain provides a decentralized and self-regulating data infrastructure in which all data and transactions are stored (Li, 2019). Due to the fact that all blocks in this technology are interconnected and in most cases are not subject to change, this technology can solve the security problem in logistics, namely, prevent the possibility of data modification and falsification by hackers.…”

Current and future of technologies and services in smart e-learning

“…Some tasks for privacy protection are to ensure no illegal leaking and modification of e-learner personal record in repositories and digital educational resources (for example, educational VR resources). Blockchain-based services will be a potential trend [8].…”