Discuss About The Policy Considerations Blockchain Technology.
Blockchain can be defined as a decentralized technology that is used by a global network of computers. The blockchain technology was invented in the year 2008 for powering the Bitcoin. Blockchain is an underlying psychology powering the bitcoin. Blockchain is a digitized and decentralized public ledger of the cryptocurrencies and transactions. Blockchain is a technology where transactions are recorded in a chronological order. This technology is particularly used to keep a track on the digital currency and transaction in absence of a central record keeping [3]. Blockchain is one of the most significant technological innovations of Bitcoin. In Blockchain and Bitcoin, users are responsible for validating the transactions while paying for a particular purchased goods or services. This eliminates the requirement of a third party in payment processing. The transaction completed is publicly recorded into the blocks of blockchain [4]. Researches prove that on an average, a new block is appended into the blockchain in every 10 minutes. The report discusses in detail the architecture, feature and the challenges of Block chain technology are discussed in the following section.
Blockchain is mesh network of computer that are not linked to a central server by are linked with each other. The connected computers in this network generally agree upon a shared state of data which is simply a distributed state machine with a number of blocks that records the transactional details. Block chain is a considerably new technology that is designed as a complete decentralized system. The “block” represents a set of records saved. These records are chained together for security purpose with the help of hash function [7]. Block architecture therefore consist of a simple database that contains the details of the transactions, that are validates by the network community instead of a single centralized database. In block chain, the validated data that is saved in form of a block is linked to the previous block, thus creating a blockchain. The technology of block chain has gained its popularity mainly due to its application in the bitcoin and the ethernum. The figures below represent that architecture of blockchain.
Blockchain is a series of stored blocks that records a transaction list including the public ledger. The Figure one represents a diagrammatic structure of blockchain. The hash of the previous block is present in the block header, and a block header consists of one parent block. There are certain uncle blocks as well, which are the children of a particular block’s ancestor, whose hashes will be secured in the ethereum blockchain. The first or the primary block of a blockchain is also termed as a genesis block as it generally does not have any parent block.
The major component of blockchain architecture is the block. A block is generally composed of a body and a block header as represented in figure 2. A block header can be further divided into different sun components, which include a block version, Merkle tree root hash, timestamp, nBits, Nonce and parent block hash. The block body on the other hand consists of a transaction counter and different transactions. The largest or the maximum number of transaction contained in a block chain can be calculated based on the block size and the size of each transaction. For validating the authenticity of the transactions, block chain mainly makes use of asymmetric cryptography mechanism. One of the applications of asymmetric key cryptography is digital signature.
The different features or characteristics of blockchain technology are as follows [1]-
The above discussed points refer to some key characteristic features of blockchain technology.
Although there has been an increasing use of blockchain technology over the years, there are certain challenges and limitations associated with blockchain. These are as follows [6]-
These are the major challenges associated with the blockchain technology.
One of the major applications of Blockchain in the field of currency is bitcoin. Digital currency or bitcoin is an application of blockchain technology. Bitcoin is a type of digital currency where the encryption techniques are generally used to regulate the generation of the different units of currency for fund transfer. It is a worldwide payment option and is the first application of blockchain. It is a first decentralized digital currency as it works without a central bank. This is a transaction with no middlemen and was developed with a goal of creating a new electronic cash system. In simple words, bitcoin is a technology that is quite similar to the virtual cash that is stored in the online wallets However, the concept of online wallets are quite simple and the money stored in this type of wallets are generally backed by any government body unlike the bitcoin, which is mainly decentralized.
Smart contract is an excellent example of blockchain technology that has the capability to replace the lawyers [2]. The main aim of smart contract is to simplify the business and trade between two identified yet anonymous parties. A smart contract can be described as a computer protocol that aims to digitally facilitate or enforce the negotiation associated with a contract. These are self automated or self processing computer programs that are used to run the terms of a particular contract. Many businesses are making use of smart contracts in order to bypass the need of a lawyer [10]. One example of a company that makes use of smart contracts is Slock.
Bitcoin can be defined as an open source software project with a commanding presence in the digital currency space. Bitcoin and blockchain is explored and experimented by a number of international aid agencies and foundations. The technology itself is complex. However, with the ability of money transfer globally in form of bitcoin is expected to change the structure of government as well [9]. This is because, bitcoin is effectively untaxable and therefore, if it becomes a standard for online transaction, it has the capability of destroying the flat currencies worldwide. With the increasing awareness among the people regarding the bitcoin technology, and the knowledge about the advantages of bitcoin such as secure and anonymous payment worldwide, encrypted transactions and absence of tax, will make millions of people accept this technology in a few years. People further believe that with bit coin technology, the government will crack down eventually. Therefore, it can be said that the social implication of the bitcoin technology is colossal and is increasingly used for providing financial services to the high number of people without accessing the banking.
Smart Contracts are agreements that make use of the blockchain, which is a digital ledger and is distributed across a network [14]. Smart contracts securely record the transaction between the parties and execute obligations of the smart contract automatically. Smart contract make use of blockchain technology, which is a secure and it is the technical aspect of smart contracts [13]. Smart contracts are mainly designed as a self enforced contract and therefore, it is being undertaken by a number of organizations. It is therefore described as a positive social innovation.
Conclusion
Therefore, it can be concluded that blockchain is an emerging technology with a number of advantages and certain limitations. It can be described as a digital ledger in which the transactions are made in bitcoin and are recorded chronologically. The report discusses the architecture, key features and the different challenges associated with the bitcoin technology. The application of the blockchain technology is further discussed in the report. The two main applications of blockchain are in the field of currency and smart contracts. In the later part of the report, the social technical aspects of Bitcoin and smart contract, the two major applications of bitcoin are discussed. Blockchain therefore can be termed as an undeniably ingenious invention.
References
[1]. Zheng, Zibin, Shaoan Xie, Hongning Dai, Xiangping Chen, and Huaimin Wang. “An overview of blockchain psychology: Architecture, consensus, and future trends.” In Big Data (BigData Congress), 2017 IEEE International Congress on, pp. 557-564. IEEE, 2017.
[2]. Omohundro, Steve. “Cryptocurrencies, smart contracts, and artificial intelligence.” AI matters 1, no. 2,2014: 19-21.
[3]. Crosby, Michael, Pradan Pattanayak, Sanjeev Verma, and Vignesh Kalyanaraman. “Blockchain technology: Beyond bitcoin.” Applied Innovation 2,2016: 6-10.
[4]. Pilkington, M., 2016. 11 Blockchain technology: principles and applications. Research handbook on digital transformations, 225.
[5]. Atzori, Marcella. “Blockchain technology and decentralized governance: Is the state still necessary?.”,2015.
[6]. Lemieux, Victoria Louise. “Trusting records: is Blockchain technology the answer?.” Records Management Journal 26, no. 2 ,2016: 110-139.
[7]. Mattila, Juri. The Blockchain Phenomenon–The Disruptive Potential of Distributed Consensus Architectures. No. 38. The Research Institute of the Finnish Economy, 2016.
[8]. Malinova, Katya, and Andreas Park. “Market Design with Blockchain Technology.”, 2017.
[9]. Scott, Brett. How can cryptocurrency and blockchain technology play a role in building social and solidarity finance?. No. 2016-1. UNRISD Working Paper, 2016.
[10]. Ammous, Saifedean Hisham. “Blockchain Technology: What is it good for?.” Browser Download This Paper ,2016.
[11]. Ouaddah, Aafaf, Anas Abou Elkalam, and Abdellah Ait Ouahman. “Towards a novel privacy-preserving access control model based on blockchain technology in IoT.” In Europe and MENA Cooperation Advances in Information and Communication Technologies, pp. 523-533. Springer, Cham, 2017.
[12]. Heires, Katherine. “The risks and rewards of blockchain technology.” Risk Management 63, no. 2, 2016: 4.
[13]. Gabison, Garry. “Policy Considerations for the Blockchain Technology Public and Private Applications.” SMU Sci. & Tech. L. Rev. 19, 2016: 327.
[14]. Watanabe, Hiroki, Shigeru Fujimura, Atsushi Nakadaira, Yasuhiko Miyazaki, Akihito Akutsu, and Jay Kishigami. “Blockchain contract: Securing a blockchain applied to smart contracts.” In Consumer Electronics (ICCE), 2016 IEEE International Conference on, pp. 467-468, 2016, IE
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