The BlockChain Revolution in Banking Industry Abstract Nowadays Bank's plays an important role in our society. But it should upgrade more with various modern technology and enhance more facility. Blockchain and crypto currency truly promising application it can enhance service. At present customer pay a bit much for transaction Blockchain technology can reduce it. Banks have limitation which is one of the major problem Blockchain and crypto currency technology can vanish this problem. Of this paper is to do research with the impact of blockchain and crypto currency In bank industry. Blockchain is digital transaction system it can validate and verify each Block chain technology can massive change in banking industry. We will analysis How much helpful this Blockchain technology is and security, advantage, limitation problem. In this paper we will try to explain on it. Introduction The Blockchain a system using the concept of cryptographically secured chain of blocks to store the time-stamped documents.It stored data and each data records connected to the one before it.It utilizes a peer-to-peer network for timestamping and verifying each exchange. It could be managed autonomously without requiring a central authority. Actually blockchain is a type of database that is a public register for recording transactions without needing a third-party to validate each one.The blockchain is distributed across a peer-to-peer (P2P) network. It is made up of data blocks that are linked together to form a continuous chain of immutable records. Blockchains are best known for their crucial role in cryptocurrency systems, such as Bitcoin, for maintaining a secure and decentralized record of transactions. A blockchain is the foundation for immutable ledgers, or records of transactions that cannot be altered, deleted, or destroyed. This is why blockchains are also known as a distributed ledger technology (DLT). Bitcoin is a decentralized peer-to-peer electronic exchange. Breaking it down, this means people can send money directly to one another without a bank or third party as an intermediary. Bitcoin was created so people don't have to rely on government or financial institutions to make financial transactions. Bitcoin allows users to transact amongst themselves using the Bitcoin blockchain. Bitcoin was created by an anonymous person or group using the name Satoshi Takemoto in 2009. A Bitcoin is mined by specialized software and hardware and is created when an increasingly difficult mathematical problem is solved was presented as a way to transact without using a third party. Then, in 2011, miners and coders started to build other networks, like Ethereum and Litecoin, and began to improve the code behind Bitcoin's blockchain, Bitcoin and other crypto currency prices depend onperceivedvalue and supply and demand. If people believe that Bitcoin is worth a specific amount, they will pay it, Bitcoins are created by mining software and hardware at a specified rate. This rate splits in half every four years, slowing down the number of coins created. Following the laws of supply and demand after every 210,000 blocks mined, or roughly every four years, the block reward given to Bitcoin miners for processing transactions is cut in half. Down to the singledigit range. “Almost two years later, in April 2013, Bitcoin reached $200. By the end of November, the same year, it was worth more than $1,000. It then rose to $10,000 in November 2017 and all the way up to its maximum price near $68,990 in November 2021. Literature Review A Blockchain is a type of technology that encourages trading partners to trust one another. Blockchain enables cash transfers while also providing assurance that the transaction will be completed correctly. The power of this revolutionary technology underpinning Bitcoin can alter our society financially by improving the way we store our money and do business, making it more fair, transparent, equitable, and free of corruption, according to Blockchain Revolution. Assume you wish to purchase someone's home. You're certain you want it, but when you start the buying procedure, the seller claims they don't want a notary or a bank involved. Is a red flag raised? We rely on middlemen in today's environment to ensure that a transaction is completed legally. They serve a crucial purpose in that they reassure both the seller and the buyer that everything will be done fairly. If history teaches us anything, it's that middlemen like banks aren't always trustworthy. Banks can fail and you could lose your money. Consider a world in which we don't require a middleman, where transactions are both trustworthy and transparent. Blockchain is a distributed ledger that consists of an ever-growing collection of ordered entries called 'blocks.' Each block includes a date and a link to the previous block. 1Blockchains are resistant to data tampering by definition; data in a block cannot be modified retrospectively after it has been recorded. As a result, blockchains are becoming increasingly popular. The blockchain eliminates 'trusted' recording and documenting all transactions that take place within the network. Proponents of the technology referred to it as a 'transfer of confidence in a skeptical world,' based on the idea that participants to a transaction can be exchanged safely without the use of a bank. Requirement for a third-party assurance, even if they don't know each other. Given this, we may conclude that the strength of blockchain technology is that it change the game. lies in the fact that it does away with the requirement to verify Trust worthiness and ensure money transfers. Consider an online version of that ledger that is secure, accurate, and updated in real-time and is instantly accessible by many parties. It's known as blockchain, and it's revolutionizing global trade and finance. The blockchain is revolutionizing transaction speed and efficiency. While the technology is currently in the proof-of-concept stage, it has the potential to have positive vibes in industries and sectors, including banking, commerce, healthcare, insurance, and government. For one thing, businesses might have nearinstant global access to their funds at any time and from any location; cash could be constantly moving to meet a company's working capital and liquidity requirements anywhere in the world. Consider an online version of that ledger that is secure, accurate, and updated in real time, and can be accessed by a large number of people. Blockchain is a technology that is transforming global trade and banking. For one thing, firms might have near-instant worldwide access to their funds at any time and from any location; cash could be moving continually to meet a company's working capital and liquidity requirements anywhere on the planet. between all of the parts and the data they carry. it seems as follows. [1] In the financial services industry, legacy systems and outdated practices are ubiquitous. Due to legal and compliance constraints, institutions in the sector are sometimes slow to adapt to new technology and innovation. However, the rise of Fintech companies over the last decade has put enterprises that rely on legacy systems that are 30 to 40 years old up against new competitors. Acknowledged methods that financial services organizations are seeking to keep up is through blockchain. Thesis paper 1 - The Blockchain Revolution The blockchain will be secured by at least two factors. To begin with, no one knows which miner will update the next block. Second, the hash value of tamper changes and no longer matches that of the previous block. It is possible to hack if the cheater succeeds in creating the chain quicker than the noncheating miners. In our system, this is not possible. .They are implement the system of payment system. Thesis paper 2 – blockchain , securities markets and central banking .They are solving the security issue of transaction of blockchain system. Thesis paper 3- Blockchain in Banking Industry . They are implement the transaction Process of the banking industry . Thesis paper 4- The blockchain technology and its application in financial sector . They are solving the security Issue of the financial sector . Thesis paper 5- The blockchain revolution 2020 in banks and financial Institutions . They are implement the transaction process and application of blockchain system . Thesis paper 6- The role of blockchain in banking.they are taking about the transaction process. Thesis Paper Name Thesis topic The Blockchain Revolution Payment System blockchain,securities markets and central banking Security Issue Blockchain in Banking Industry Transaction process The blockchain technology Security Issue and its application in financial sector[3] Fig : Merkle Tree of bitcoin security system Merkle tree is a tree-shaped data structure with hashes from data blocks in the leaf vertices and hashes from adding values in child vertices in the inner vertices. This creates a connection The blockchain revolution 2020 in banks and financial Institutions The role of blockchain in banking Transaction Process and application Transaction process Recommendation From the all the thesis paper the 5th thesis paper name The blockchain technology and its application in financial sector is better from the other papers. The security issue is the most important issue in the transaction process. The markle tree process is the best way to secure the transaction process. Every transaction is identified by a hash code. Which contains the transaction's original information. This hash value is collected into a block. Cheaters cannot affect the blocks because of the prior hash in the new block. A timestamp is included in every hash. So a cheater won't be able to hack this in less 10 minutes. As a result, this procedure is preferable for ensuring transaction security. [3] Conclusion The goal of this thesis was to look into the potential uses of blockchain technology in the financial industry, as well as to emphasize the technology's value and significance. As this thesis points out, blockchain technology is not limited to the virtual currency bitcoin, but may be applied to a wide range of applications. In fact, according to this argument, bitcoin is a fairly terrible application of this technology because it allows users to send money and operate anonymously, which leads to dubious uses (The Econ-omist, 2016b). Other uses of blockchain technology have been introduced throughout this thesis by referencing current literature. Blockchain technology can help the banking sector in a variety of ways. When superfluous and costly intermediaries are removed from various processes, technology can cut costs and boost efficiency. When fewer assets are held up during transactions, blockchain technology reduces risks (The Economist, 2016a). The distributed qualities of public blockchains improve transparency, and security is assured when data cannot be altered with (The Economist, 2015). Private blockchains have recently gotten, notably in the banking industry, because they allow you to store secret data and restrict who has access to it (Buterin, 2015). The effects of blockchain technology on financial markets and the kind of applications it could enable were the subject of this thesis. However, there are a variety of intriguing things to research in relation to block-chain technology. One fascinating area of study is how blockchain technology will affect the lives of 'ordinary people.' One thing is certain: banking services will become faster and less expensive, which implies that anybody with an account or who conducts business online will be impacted by this technology. This is an exciting and contemporary issue in my perspective, however it was reduced down for this thesis. Another important aspect is the Distributed Ledger Group's collaboration. One may look at the Distributed Ledger Group's growth and developments, as well as the possibilities that blockchain technology has in the financial sector. Before moving to a blockchain-based system, there are still technical and legislative hurdles to surmount. There is little doubt that blockchain technology will have tremendous long-term significance, but it will take time to realize its full potential. "We won't get there tomorrow, but we will get there," said Masters (2015) of the adoption of blockchain technology in the financial sector. Reference: [1] Kakavand, H., Kost De Sevres, N. and Chilton, B., 2017. The blockchain revolution: An analysis of regulation and technology related to distributed ledger technologies. Available at SSRN 2849251. [2] Seretakis, A.L., 2019. Blockchain, securities markets and central banking. [3] Guo, Y. and Liang, C., 2016. Blockchain application and outlook in the banking industry. Financial innovation, 2(1), pp.1-12. [4] Jutila, L., 2017. The blockchain technology and its applications in the financial sector. [5] Palihapitiya, T., 2020. Blockchain Revolution in Banking Industry. University of Moratuwa, Sri Lanka. [6] Melnychenko, O. and Hartinger, R., 2017. Role of blockchain technology in accounting and auditing. European Cooperation, 9(28), pp.27-34. [7] https://changelly.com/blog/merkle-treeexplain/