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Cryptocurrency is a digital currency or decentralized system of exchange that uses advanced cryptography for security. Common examples of cryptocurrencies used include Ethereum, Ripple, Litecoin, and the popular Bitcoin. Though not considered a mainstream form of currency, some tout the business benefits of cryptocurrency over traditional forms of payment such as lower fees, fraud reduction, instant payments, and other advantages. Cryptocurrency is important to learn for various reasons, including to help businesses adopt the form of payment to attract new customers. Bitcoin-, blockchain-, and other enthusiasts will be excited to learn that their cryptocurrency interests can translate into exciting careers. Various fields, industries, and sectors are looking for specialists in cryptocurrency—including banking, accounting, oil and gas, insurance, and retailers, with particular growth in media, logistics, and legal compliance.
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Best coin to buy today tamil
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- Cryptocurrency crash: Bitcoin, Ethereum fall in value. Here are possible causes
- India will not 'shut off' all cryptocurrency, wants blockchain: Sitharaman
- ECash Price Prediction: Should You Invest In XEC Cryptocurrency? Check Market Value, Price
- When is it a good time to invest in Bitcoin, explained
- Get Rs 5 lakh in exchange of 2 rupee coin, here's how
- 5 popular cryptocurrency exchanges in India
- CHENNAI METROPOLITAN AREA - PROFILE
Cryptocurrency crash: Bitcoin, Ethereum fall in value. Here are possible causes
A cryptocurrency , crypto-currency , or crypto is a digital currency designed to work as a medium of exchange through a computer network that is not reliant on any central authority, such as a government or bank , to uphold or maintain it.
Individual coin ownership records are stored in a digital ledger , which is a computerized database using strong cryptography to secure transaction records, to control the creation of additional coins, and to verify the transfer of coin ownership. In a proof-of-stake model, owners put up their tokens as collateral. In return, they get authority over the token in proportion to the amount they stake.
Generally, these token stakers get additional ownership in the token over time via network fees, newly minted tokens or other such reward mechanisms.
Cryptocurrency does not exist in physical form like paper money and is typically not issued by a central authority. Cryptocurrencies typically use decentralized control as opposed to a central bank digital currency CBDC. When implemented with decentralized control, each cryptocurrency works through distributed ledger technology, typically a blockchain , that serves as a public financial transaction database. A cryptocurrency is a tradable digital asset or digital form of money, built on blockchain technology that only exists online.
Cryptocurrencies use encryption to authenticate and protect transactions, hence their name. There are currently over a thousand different cryptocurrencies in the world, and their supporters see them as the key to a fairer future economy. Bitcoin , first released as open-source software in , is the first decentralized cryptocurrency. In , the American cryptographer David Chaum conceived an anonymous cryptographic electronic money called ecash. This allowed the digital currency to be untraceable by the issuing bank, the government, or any third party.
In , Wei Dai published a description of "b-money", characterized as an anonymous, distributed electronic cash system. In , the first decentralized cryptocurrency, bitcoin, was created by presumably pseudonymous developer Satoshi Nakamoto.
It used SHA , a cryptographic hash function, in its proof-of-work scheme. Soon after, in October , Litecoin was released. It used scrypt as its hash function instead of SHA On 6 August , the UK announced its Treasury had commissioned a study of cryptocurrencies, and what role, if any, they could play in the UK economy.
The study was also to report on whether regulation should be considered. In June , El Salvador became the first country to accept Bitcoin as legal tender , after the Legislative Assembly had voted 62—22 to pass a bill submitted by President Nayib Bukele classifying the cryptocurrency as such. In August , Cuba followed with Resolution to recognize and regulate cryptocurrencies such as bitcoin. In September , the government of China , the single largest market for cryptocurrency, declared all cryptocurrency transactions illegal, completing a crackdown on cryptocurrency that had previously banned the operation of intermediaries and miners within China.
According to Jan Lansky, a cryptocurrency is a system that meets six conditions: . In March , the word cryptocurrency was added to the Merriam-Webster Dictionary. Tokens, cryptocurrencies, and other types of digital assets that are not bitcoin are collectively known as alternative cryptocurrencies,    typically shortened to "altcoins" or "alt coins",   or disparagingly known as "shitcoins".
The term is commonly used to describe coins and tokens created after bitcoin. Altcoins often have underlying differences with bitcoin. For example, Litecoin aims to process a block every 2.
Significant rallies across altcoin markets are often referred to as an "altseason". Stablecoins are altcoins that are designed to maintain a stable level of purchasing power. Decentralized cryptocurrency is produced by the entire cryptocurrency system collectively, at a rate which is defined when the system is created and which is publicly known. In centralized banking and economic systems such as the US Federal Reserve System , corporate boards or governments control the supply of currency.
The underlying technical system upon which decentralized cryptocurrencies are based was created by the group or individual known as Satoshi Nakamoto. As of May [update] , over 1, cryptocurrency specifications existed. Most cryptocurrencies are designed to gradually decrease the production of that currency, placing a cap on the total amount of that currency that will ever be in circulation.
The validity of each cryptocurrency's coins is provided by a blockchain. A blockchain is a continuously growing list of records , called blocks , which are linked and secured using cryptography.
It is "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way". Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority.
Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain. In the world of cryptocurrency, a node is a computer that connects to a cryptocurrency network.
The node supports the relevant cryptocurrency's network through either; relaying transactions, validation or hosting a copy of the blockchain. In terms of relaying transactions each network computer node has a copy of the blockchain of the cryptocurrency it supports, when a transaction is made the node creating the transaction broadcasts details of the transaction using encryption to other nodes throughout the node network so that the transaction and every other transaction is known.
Node owners are either volunteers, those hosted by the organisation or body responsible for developing the cryptocurrency blockchain network technology, or those who are enticed to host a node to receive rewards from hosting the node network. Cryptocurrencies use various timestamping schemes to "prove" the validity of transactions added to the blockchain ledger without the need for a trusted third party. The first timestamping scheme invented was the proof-of-work scheme.
The most widely used proof-of-work schemes are based on SHA and scrypt. The proof-of-stake is a method of securing a cryptocurrency network and achieving distributed consensus through requesting users to show ownership of a certain amount of currency.
It is different from proof-of-work systems that run difficult hashing algorithms to validate electronic transactions. The scheme is largely dependent on the coin, and there's currently no standard form of it. Some cryptocurrencies use a combined proof-of-work and proof-of-stake scheme. In cryptocurrency networks, mining is a validation of transactions.
For this effort, successful miners obtain new cryptocurrency as a reward. The reward decreases transaction fees by creating a complementary incentive to contribute to the processing power of the network. With more people venturing into the world of virtual currency, generating hashes for validation has become more complex over time, forcing miners to invest increasingly large sums of money to improve computing performance.
Consequently, the reward for finding a hash has diminished and often does not justify the investment in equipment and cooling facilities to mitigate the heat the equipment produces , and the electricity required to run them. As of July [update] , bitcoin's electricity consumption is estimated to about 7 gigawatts, 0. Some miners pool resources , sharing their processing power over a network to split the reward equally, according to the amount of work they contributed to the probability of finding a block.
A "share" is awarded to members of the mining pool who present a valid partial proof-of-work. As of February [update] , the Chinese Government has halted trading of virtual currency, banned initial coin offerings and shut down mining. Many Chinese miners have since relocated to Canada  and Texas. In March , the city of Plattsburgh in upstate New York put an month moratorium on all cryptocurrency mining in an effort to preserve natural resources and the "character and direction" of the city.
An increase in cryptocurrency mining increased the demand for graphics cards GPU in Miners regularly buy up the entire stock of new GPU's as soon as they are available. Nvidia has asked retailers to do what they can when it comes to selling GPUs to gamers instead of miners. A cryptocurrency wallet stores the public and private "keys" address or seed which can be used to receive or spend the cryptocurrency.
With the public key, it is possible for others to send currency to the wallet. There exist multiple methods of storing keys or seed in a wallet from using paper wallets which are traditional public, private or seed keys written on paper to using hardware wallets which are dedicated hardware to securely store your wallet information, using a digital wallet which is a computer with a software hosting your wallet information, hosting your wallet using an exchange where cryptocurrency is traded.
Bitcoin is pseudonymous rather than anonymous in that the cryptocurrency within a wallet is not tied to people, but rather to one or more specific keys or "addresses". Still, cryptocurrency exchanges are often required by law to collect the personal information of their users.
Additions such as Monero , Zerocoin , Zerocash and CryptoNote have been suggested, which would allow for additional anonymity and fungibility. Cryptocurrencies are used primarily outside existing banking and governmental institutions and are exchanged over the Internet. Proof-of-work cryptocurrencies, such as bitcoin, offer block rewards incentives for miners.
There has been an implicit belief that whether miners are paid by block rewards or transaction fees does not affect the security of the blockchain, but a study suggests that this may not be the case under certain circumstances. The rewards paid to miners increase the supply of the cryptocurrency. By making sure that verifying transactions is a costly business, the integrity of the network can be preserved as long as benevolent nodes control a majority of computing power.
The verification algorithm requires a lot of processing power, and thus electricity in order to make verification costly enough to accurately validate public blockchain. Not only do miners have to factor in the costs associated with expensive equipment necessary to stand a chance of solving a hash problem, they further must consider the significant amount of electrical power in search of the solution.
Generally, the block rewards outweigh electricity and equipment costs, but this may not always be the case. The current value, not the long-term value, of the cryptocurrency supports the reward scheme to incentivize miners to engage in costly mining activities.
Some sources claim that the current bitcoin design is very inefficient, generating a welfare loss of 1. However, the efficiency of the bitcoin system can be significantly improved by optimizing the rate of coin creation and minimizing transaction fees.
Another potential improvement is to eliminate inefficient mining activities by changing the consensus protocol altogether. Transaction fees for cryptocurrency depend mainly on the supply of network capacity at the time, versus the demand from the currency holder for a faster transaction.
For Ether , transaction fees differ by computational complexity, bandwidth use, and storage needs, while bitcoin transaction fees differ by transaction size and whether the transaction uses SegWit. Some cryptocurrencies have no transaction fees, and instead rely on client-side proof-of-work as the transaction prioritization and anti-spam mechanism.
Cryptocurrency exchanges allow customers to trade cryptocurrencies  for other assets, such as conventional fiat money , or to trade between different digital currencies. Atomic swaps are a mechanism where one cryptocurrency can be exchanged directly for another cryptocurrency, without the need for a trusted third party such as an exchange. The kiosk installed in Austin, Texas, is similar to bank ATMs but has scanners to read government-issued identification such as a driver's license or a passport to confirm users' identities.
An initial coin offering ICO is a controversial means of raising funds for a new cryptocurrency venture. An ICO may be used by startups with the intention of avoiding regulation. However, securities regulators in many jurisdictions, including in the U. In an ICO campaign, a percentage of the cryptocurrency usually in the form of "tokens" is sold to early backers of the project in exchange for legal tender or other cryptocurrencies, often bitcoin or Ether.
According to PricewaterhouseCoopers , four of the 10 biggest proposed initial coin offerings have used Switzerland as a base, where they are frequently registered as non-profit foundations. The Swiss regulatory agency FINMA stated that it would take a "balanced approach" to ICO projects and would allow "legitimate innovators to navigate the regulatory landscape and so launch their projects in a way consistent with national laws protecting investors and the integrity of the financial system.
The "market cap" of any coin is calculated by multiplying the price by the number of coins in circulation.
India will not 'shut off' all cryptocurrency, wants blockchain: Sitharaman
The history of Ecash and the Bitcoin Cash ABC network is somewhat controversial as their teams split due to disagreements among the technicalities of the block size or the size cap of 1 MB. They finally split when the two teams could not find an agreement on the method of payment. After the rebranding of eCash, experts say that the network made efforts to add the Proof-of-Stake consensus protocol, which helps speed up the transactions. Therefore, the projections can be interesting yet contradictory for Ecash. From the price projections, it is clear that eCash XEC projections are not linear and can be unpredictable.
ECash Price Prediction: Should You Invest In XEC Cryptocurrency? Check Market Value, Price
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When is it a good time to invest in Bitcoin, explained
Cryptocurrency Prices Today, 27 January Check and compare cryptocurrency prices. Get to know how much bitcoins, Ethereum, Litecoin, Ripple, Dogecoin and other cryptocurrencies rate, value, worth today, compare prices, and check market capital across all the top Indian exchanges. Cryptocurrency remains a volatile market, and prices change very frequently. Bitcoin is the oldest and most well-known cryptocurrency token that can be purchased and in the last hours, its value has changed by Crypto prices can vary slightly across providers, so using a single source for this information is very important.
Get Rs 5 lakh in exchange of 2 rupee coin, here's how
5 popular cryptocurrency exchanges in India
Note: This blog is written by an external blogger. The views and opinions expressed within this post belong solely to the author. The world is going crazy for cryptocurrencies right now. With the rise in popularity of decentralized finance DeFi and innovative blockchain-based projects on various platforms, more new cryptocurrencies are coming into the picture. However, not all cryptocurrencies are created equal. Cryptos like Bitcoin, Cardano, Ethereum, and Tether have been shown regularly in the headlines and have gained a lot of prominence in the first quarter of this year.
CHENNAI METROPOLITAN AREA - PROFILE
Meme coins are not a joke anymore. Cryptocurrency has the ability to emerge as the new investment option in the festival season to fund the future. Going by this trend, Indian investors traded quite a bit of digital tokens this Diwali.
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