Blockchain course in Multan to learn crypto currency exchange 2022
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| Blockchain course in Multan to learn crypto currency exchange |
Dear viewers, In this Article We are providing you the Blockchain course in Multan for those who are interested to learn cryptocurrency exchange and want to earn money by investing on the cryptocurrency such as Bitcoin.
The duration of Blockchain course in Multan:::::: 3 months
The timing of Blockchain course in Multan::::::: 4PM to 6PM
Those who are interested please contact us and for more information visit our Institute.
1st floor Noor Plaza Opposite Women University Ghanta Ghar Road, Multan.
Now I am going to explain the Blockchain course.
What is Blockchain?
A blockchain is a system that records information in a way that makes it difficult or impossible to modify, hack, or cheat the system. A blockchain is essentially a digital ledger that is replicated and distributed across a network of computer systems on the blockchain.
A blockchain is a distributed database or ledger shared between nodes in a computer network. As a database, blockchain electronically stores information in digital form. Blockchain is best known for its critical role in maintaining a secure, decentralized record of transactions in cryptocurrency systems like Bitcoin. Blockchain innovation is to ensure the fidelity and security of data records and create trust without the need for a trusted third party.
The main difference between common databases and blockchains is the structure of the data. Blockchain collects information in groups called blocks, which contain a set of information. Blocks have a certain amount of storage, and when they are full they are closed and linked to previously filled blocks, creating a chain of data called a blockchain. New information following this newly added block is compiled into a newly formed block and also added to the chain as it fills.
Databases typically structure data in tables, whereas blockchains, as the name suggests, structure data in chunks (blocks) that are ordered together. This data structure inherently creates an irreversible timeline of data when implemented in a decentralized way. When a block is full, it becomes pinned and becomes part of its timeline. Once added to the chain, each block in the chain is given a precise timestamp.
How does blockchain work?
The purpose of blockchain is to record and distribute digital information, not to edit it. As such, blockchain is an immutable ledger, or foundation for a record of transactions that cannot be altered, erased, or destroyed. For this reason, blockchain is also called distributed ledger technology (DLT).
The blockchain concept was first proposed as a research project in 1991. This predates his first widespread application of
Bitcoins in 2009. Since then, the use of blockchain has exploded with the creation of various cryptocurrencies, decentralized finance (DeFi) applications, non-fungible tokens (NFTs), and smart contracts.
Transaction Process
Blockchain Decentralization
A company has a server farm with 10,000 computers used to maintain a database of all customer account information. Suppose you own This company owns a warehouse building where he stores all these computers under one roof and has complete control over each of these computers and all the information they contain. However, this introduces a single point of failure. What would happen if the electricity went out in this place? What if his internet connection is lost? What if it burns to the ground? What if a malicious person erased everything with one keystroke of her?In either case, the data would be lost or corrupted.
What the blockchain does is that the data contained in this database can be distributed over multiple network nodes in different locations. This not only creates redundancy, but also maintains the accuracy of the data stored there. If someone tries to change a record in one instance of her in the database, the other nodes won't change, so the attacker can't. If a user tampered with a Bitcoin transaction record, all other nodes would reference each other, making it easy to identify the node with the incorrect information. This system helps establish a precise and transparent sequence of events. In this way information containing a single node in the network cannot be changed.
Information and history (such as cryptocurrency transactions) are therefore irreversible. Such a record could be a list of transactions (e.g. related to cryptocurrencies), but blockchain has many different types of records such as legal contracts, government identification documents, corporate product inventories, etc. You can also include other information.
Transparency
Due to the decentralized nature of the Bitcoin blockchain, all transactions can be viewed transparently by having a personal node or using a blockchain explorer where anyone can see the transactions live . Each node has its own copy of the chain that is updated as new blocks are confirmed and added. This means you can track your Bitcoins anywhere.
For example, exchanges have been hacked in the past and people who held bitcoins on exchanges lost everything. can be tracked to If the bitcoins stolen in some of these hacks were moved or distributed somewhere else, this is known. chain) is encrypted. This means that only the owner of the record can decrypt the record to reveal its identity (using a public/private key pair). This allows blockchain users to remain anonymous while maintaining transparency.
Is blockchain secure?
Blockchain technology enables decentralized security and trust in several ways. New blocks are always stored linearly and chronologically initially. That is, they are always added to the "end" of the blockchain. After a block has been added to the end of the blockchain, it is very difficult to go back and change the contents of the block unless the majority of the network agrees to do so. This is because it contains the hash of the previous block, as well as the aforementioned timestamp. A hash code is created by a mathematical function that converts digital information into a series of numbers and letters. If this information is edited in any way, the hash code will also change.
Suppose a hacker, who also runs nodes in a blockchain network, wants to modify one blockchain and steal cryptocurrency from everyone else. If they change the single copy of himself it will no longer match all other copies, if everyone else is cross referencing his copy then this one copy of him will be noticed and that hacker version of the chain will be discarded as illegal.
For such a hack to succeed, the hacker would have to control and modify more than 51% of the copies of the blockchain at the same time so that the new copy would become the majority copy and become the agreed upon chain. I have. Such an attack would require a huge amount of money and resources as every block would have to be recreated due to the different timestamps and hash codes.
The size and rapid growth of many cryptocurrency networks could make the cost of such a feat prohibitive. Not only is this very expensive, but it is also prone to failure. Doing something like this will not go unnoticed as network members will see dramatic changes to the blockchain. Network members will hard switch to newer versions of the chain that are not affected. This renders the attacked version of the token worthless, and ultimately renders the attack pointless as the bad guys are in control of a worthless asset. The same is true if bad actors attack new forks of Bitcoin. Joining a network is built to provide a much greater economic incentive than attacking the network.
How is the blockchain used?
As we know it today, the blocks of the Bitcoin blockchain store data about monetary transactions. Over 10,000 other cryptocurrency systems are currently running on the blockchain. But in practice, it turns out that blockchain is also a reliable way to store data about other types of transactions.
Companies that have already integrated blockchain include Walmart, Pfizer, AIG, Siemens, Unilever and others. For example, IBM developed the Food Trust blockchain to track the path food takes to reach its location.
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Why is that? The food industry has seen countless outbreaks of E. coli, Salmonella, Listeria, and toxic substances accidentally introduced into food. Historically, it took weeks to find out what caused these outbreaks and what caused people's diet-related illnesses. Using blockchain, brands can follow the path of food from its origin to each stop and delivery. If food is contaminated, it can be traced back to its origin from each stop. Not only that, but these companies can now see anything else they might come in contact with, which could help identify problems earlier and save lives. While this is an example of a blockchain in action, there are many other forms of blockchain implementation.
