What Is blockchain in cryptocurrencies

What Is Blockchain in cryptocurrencies

The Three Blockchain Concepts
Understanding the three main blockchain ideas is a prerequisite for understanding bitcoin mining.bitcoin mining.  Blockchain in cryptocurrencies

Public distributed ledger: A public distributed ledger is a database of all transactions kept in the global blockchain network. Users of bitcoin do transaction validation on the network.
SHA-256: In order to keep the blocks secure, blockchain uses the SHA-256 hash function to prevent unwanted access. They have a digital signature. Once produced, their hash value cannot be changed. SHA-256 is a one-way function that can only partially deduce the reverse of the input from the output. It accepts input strings of any length and returns a fixed 256-bit output (what you have generated). Blockchain in cryptocurrencies.
Evidence of work: In blockchain mining, miners verify transactions by figuring out a challenging math problem known as proof of work. To do this, the miner’s main goal is to ascertain the nonce value, which is the solution to the mathematical conundrum that must be solved in order to produce a hash that is lower than the target set by the network for a specific block.

The Bitcoin Mining Concept and Blockchain in cryptocurrencies.

Bitcoin Revenue and the Profitability of Bitcoin Mining
One way to trade bitcoins and make money is with Bitcoin Profit, an automated robot. In order to find trading opportunities in the cryptocurrency market, it employs an AI algorithm. This algorithm can automatically close and open your trade, saving you time and requiring no manual intervention.
It asserts that in typical market circumstances, 85% of its trades result in profits. Calculating the profit produced by the Bitcoin mining process, however, requires technical expertise. Blockchain in cryptocurrencies.

The cost of the AISC hardware, the amount of electricity used, and the efficiency of the mining software all play a role in how much money can really be made with Bitcoin. Profitability of Bitcoin mining has fallen recently compared to past years due to increases in electricity bills, more expensive hardware, difficulty of mining as a result of increased competition, and falls in Bitcoin values. Bitcoin mining was first started utilizing CPUs and simple AI algorithms, which made it profitable and less expensive.

Traditional currencies versus Bitcoin

Although they are both used as a store of value, Bitcoin and conventional currency are different in many respects. The first and most well-known cryptocurrency, which is a digital currency protected by encryption, is Bitcoin. Traditional money, often known as fiat money, is a legal tender that is issued and controlled by the government.
The table below highlights a few distinctions between Bitcoin and conventional currencies.
Traditional Currency Tangibility of Bitcoin
It is a tangible currency in the form of notes and coins, but it can only be spent in its digital form. But we may utilize it in both analog and digital versions. Regulation produced via mining and managed by a decentralized distributed computer network and are overseen and controlled by central banking institutions. Because of this, the conventional money is accepted as legal tender in the nation under the control of the issuing authorities.
Governance governed by a consensus process where the majority has final say only under the control of the central bank Value
Value is supported by the users’ confidence. Bitcoin gets more stable as more people are prepared to do transactions with it.
Value is based on forces of supply and demand, which makes it susceptible to inflation. Supply With a ceiling of 21 million, the supply of fiat currency is unlimited. transaction validation. Blockchain technology is used to validate bitcoin transactions, eliminating the need for a middleman. Transactions involve a middleman, like a bank or payment processor.
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Fees for transactions in Blockchain in cryptocurrencies

As intermediaries have been eliminated, there are few or no related costs. Transactions result in significant fees. Transaction speed and duration
Almost always, the transaction is immediate, otherwise it heavily depends on the network speed.
Transactions may take some time before being verified or reflecting on the system. Security
Decentralization, cryptography, and consensus principles ensure a secure network and the confidentiality of bitcoin transactions.
Less secure because changes in governmental policies may have a detrimental impact Reversals
Transactions made using bitcoin cannot be charged back, canceled, or reversed. Traditional currency transactions frequently result in chargebacks, reversals, and cancellations.
How Bitcoin Mining Operates: The 64-Digit Hexadecimal Code for POW stands for Public Distributed Network (SHA-256 Algorithm)
Blockchain is a peer-to-peer decentralized network that has been praised for being extremely safe and transparent, and hence reliable. This is due to the fact that entries in the blockchain network are protected using timestamps and cryptographic hash functions, making it nearly hard and impractical to change the transactions after they have been entered to the ledger. The lack of centralized control is fundamental to blockchain security.

An explanation of what happens during bitcoin mining is provided below.

The Mining Conditions

A bitcoin miner will first choose and set up their working tools. These consist of:

ASIC, SSD, or hardware GPU (graphics processing unit) for cryptocurrency mining (application-specific integrated circuit)
software for mining
a purse
preferred mining pool (if pool mining is used as an alternative to solo mining) After everything is configured and the system is turned on, the mining operation is carried out automatically. Any further human engagement only occurs when a system or network fails, there is a power outage, or when the system needs routine maintenance.

A Bitcoin Transaction’s Components

Three things happen when a transaction is started on the bitcoin network:

Transactional input

An output of a transaction

The sum of the transaction
A bitcoin mining program creates a special cryptographic hash problem for each transaction input that is challenging to crack. The amount of transactions necessary to create a block is then organized into a Merkle tree by the program.
The SHA-256 algorithm and the Merkle Tree
The hashes in a block are organized into a Merkle tree, which serves as a summary of all the transactions in the block. The SHA-256 algorithm is used to continually pair transaction IDs, or individual transaction hashes, in the Merkle tree until one hash uniquely identifies the tree as a whole. The Merkle root or root hash is the name given to this hash.
The Merkle tree makes it possible for the bitcoin network to efficiently verify transactions.
Blocked Header
The block header contains the Merkle root, which serves as a Merkle tree’s unique identification. The following elements can be found in the block header, which contains information about the block:
The bitcoin software’s version number the block’s prior block’s hashMerkle’s root (root hash)
Cryptographic nonce timestamp
the intended Miners will use this data to crack the hash problem and add a block transaction. the Hash Puzzle solution
By locating the hash below a specified target through the difficulty criterion, miners must solve the hash puzzle. The target, which is represented as a 67-digit number included in the header, will be used to calculate the mining difficulty based on the number of miners vying to solve a hash function. It is vital to note that this difficulty changes according on how long it took miners to solve an equation in the 2016 blocks before each new block is created. This contributes to the rate at which transactions are appended in the blockchain at 10 minutes.

Bitcoin circulation and mining

The maximum supply cap for Bitcoin, set by its creator Satoshi Nakamoto in the source code to be 21 million, is perplexing. However, analysts have recognized it as a great benefit because the oldest cryptocurrency has a consistent price and value because to the limited quantity.

More bitcoins have been mined and put into circulation since the genesis Bitcoin block, which was created in 2009 with 50 bitcoins. Bitcoin mining makes ensuring that transaction blocks are generated, stacked in the correct sequence, and mathematically traceable. The amount of bitcoins in circulation rises as a result of the reward of bitcoins that accompany block formation.
The cleverly designed Bitcoin architecture ensures that a block is found every 10 minutes and that a predetermined bitcoin reward is given for each block that is mined.

Defending against hacking

What happens if data is compromised? As the name suggests, blockchain is a chain of blocks. Let’s call the blocks A, B, and C. Each block has completed a challenge to produce a unique hash value that serves as its identifier. Let’s say someone tries to alter the data in block B by tampering with it. Since the data is aggregated in the block, if the data changes, the hash value, which serves as the block’s digital signature, will likewise change. Therefore, it will taint the chain that follows—Because block C’s prior hash value will no longer be valid, all blocks before block B will get delinked.

A hacker would need to alter the hash value of every block before block B in order to make the entire blockchain valid for the altered block B. This is practically difficult and would demand a tremendous amount of computational power. Blockchain can’t be hacked using this technique, which also stops data change.

Bitcoin Mining Concept: Blockchain Cannot Be Hacked

why we  Mine Bitcoin?
Let’s face it: the main reason people mine Bitcoin is to make money. Other than that, those that are interested in this technology and how it operates love playing around with it.