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Top 100 cryptos today by Market Capitalization.

Check the quotation of the main cryptocurrencies today, sorted by market cap, price, trading volume and variation.

# MoedaPreço  24H   7D   30D Prediction 7DMktCapVolume 24HSupplyGráfico (7D)

Prediction (7D): These prices should not be considered as trading or investment advice. Cryptocurrency investments and trading involve substantial risk of loss and are not suitable for all investors. If you do not fully understand these risks, you should seek further information.

How Prediction works (7D or 7 Days): For each asset, we show a price prediction index for the next 7 days, which our machine learning process believes each cryptocurrency will trade from today, along with the predicted increase or decrease percentage.

Frequently Asked Questions about the Cryptocurrency Market Today

What is a cryptocurrency?

What is a cryptocurrency today?
A cryptocurrency is a digital currency that keeps records about balances and transactions in a distributed ledger, which is most commonly in crafts of blockchain. Cryptocurrencies enable peer-to-peer transactions between participants around the world 24 hours a day, 7 days a week.

A distributed ledger is a database with no central administrator that is maintained by a network of nodes. In distributed ledgers without permission, anyone can join the network and operate a node. In permissioned distributed ledgers, the ability to operate a node is reserved for a group of pre-approved entities.

Major cryptocurrencies such as Bitcoin and Ethereum employ a permissionless design where anyone can participate in the process of establishing consensus on the current state of the ledger. This allows for a high degree of decentralization and resiliency, making it very difficult for a single entity to arbitrarily change transaction history. Check the main ones cryptocurrency news.

How does a cryptocurrency work?

Cryptocurrency works through networks of nodes that are constantly communicating with each other to keep up to date on the current state of the ledger. With permissionless cryptocurrencies, a node can be operated by anyone as long as they have the necessary technical knowledge, computer hardware, and bandwidth.

However, not all cryptocurrencies work the same way. Although all cryptocurrencies today take advantage of crypto methods to some extent (hence the name), we can now find many different designs of projects that have their own strengths and weaknesses.

The two main categories of cryptocurrencies are Proof of Work and Proof of Stake. Proof-of-work coins use mining, while proof-of-stake coins use staking to reach consensus on the state of the ledger.

To send and receive a cryptocurrency, you need a cryptocurrency wallet. A cryptocurrency wallet is software that manages private and public keys. In the case of Bitcoin, as long as you control the private key needed to transact your BTC, you can send your BTC to anyone in the world for any reason.

How are cryptocurrency prices calculated?

Cryptocurrency prices are calculated by averaging the exchange rates on different trading platforms. In this way, we can determine an average price that reflects today's cryptocurrency market conditions as accurately as possible.

Cryptocurrency exchanges provide markets where cryptocurrencies are bought and sold 24/7. Depending on the exchange, cryptocurrencies can be traded against other cryptocurrencies (e.g. BTC/ETH) or against fiat currencies like USD or EUR (e.g. BTC/USD). On exchanges, traders submit orders that specify the highest price they are willing to buy the cryptocurrency for or the lowest price they are willing to sell it for. These market dynamics determine the current price of any cryptocurrency.

PortalCripto tracks over 400 cryptocurrency exchanges and thousands of trading pairs to ensure our data is as reliable as possible.

Generally, cryptocurrency price data will be more reliable for the most popular cryptocurrencies. Cryptocurrencies like Bitcoin and Ethereum enjoy high levels of liquidity and trade at similar rates regardless of which cryptocurrency exchange you are looking at. A liquid market has many participants and a lot of trading volume – in practice this means that your trades will be executed quickly and at a predictable price. In an illiquid market, you might have to wait a while before someone is willing to take the other side of your trade, and the price might even be affected significantly by your order.

For smaller alternative cryptocurrencies or altcoins, there may be noticeable price discrepancies across different exchanges. At PortalCripto, we weight price data by volume so that the most active markets have the greatest influence on the prices we display.

What is the best cryptocurrency?

Bitcoin is the most popular cryptocurrency and has the highest adoption among individuals and businesses. However, there are many cryptocurrencies today that are different, with their own advantages or disadvantages.

If you value a highly secure, decentralized network above all else, Bitcoin is probably your best bet. This is because the Bitcoin network consists of thousands of nodes spread geographically and is protected by a huge amount of computing power. On the other hand, if you require transactions to be very fast and cheap, Bitcoin is probably not the best choice due to the relative inefficiency of its proof-of-work design. In that case, you might consider using a cryptocurrency like XRP or Stellar Lumens. If you want to use decentralized apps and need smart contract functionality, a cryptocurrency like Ethereum or EOS would be the best choice.

The cryptocurrencies listed here today are used as examples to illustrate the point that the best cryptocurrency depends on your specific requirements and use case.

Who invented the bitcoin cryptocurrency?

Cryptocurrency was invented by Satoshi Nakamoto, which is the pseudonym used by the inventor of Bitcoin. Although digital currency concepts existed before Bitcoin, Satoshi Nakamoto was the first to create a peer-to-peer digital currency that reliably solved the problems faced by previous digital money projects. Bitcoin was initially proposed in 2008 and released in early 2009. After Bitcoin's invention, thousands of projects have attempted to imitate Bitcoin's success or improve on Bitcoin's original design by leveraging new technologies.

What is the market value of a cryptocurrency?

Cryptocurrency market capitalization or “crypto market cap” is a widely used metric that is commonly used to compare the relative size of different cryptocurrencies. At PortalCripto, market cap is the standard metric by which we rank the cryptos on our page. We also track the total cryptocurrency market cap by adding up the market cap of all cryptos listed on the PortalCrypt. The total market cap provides an estimate of whether the cryptocurrency market as a whole is growing or decreasing.

How is the market capitalization of cryptocurrencies calculated?

We calculate the market value of a cryptocurrency by taking the price of the cryptocurrency per unit and multiplying it by the circulating supply of the cryptocurrency. The formula is simple: Market Value = Price * Current Supply. Circulating supply refers to the number of units of a cryptocurrency that currently exist and can be traded.

Does market cap matter in cryptocurrencies today?

The market cap of cryptocurrencies is important because it is a useful way to compare different cryptocurrencies. If Currency A has a significantly higher market value than Currency B, this tells us that Currency A is likely to be more widely adopted by individuals and companies and more valued by the market. On the other hand, it could also be an indication that currency B is undervalued relative to currency A.

While market cap is a widely used metric, it can sometimes be misleading. A good rule of thumb is that the usefulness of any cryptocurrency market capitalization metric increases in proportion to the cryptocurrency’s trading volume. If a cryptocurrency is actively traded and has deep liquidity on many different exchanges, it becomes much more difficult for individual actors to manipulate prices and create an unrealistic market value for the cryptocurrency.

How can a cryptocurrency increase its market cap?

The market value of a cryptocurrency increases when its price per unit increases. Alternatively, an increase in circulating supply can also lead to an increase in market value. However, an increase in supply also tends to lead to a lower price per unit, and the two largely cancel each other out. In practice, an increase in the price per unit is the main way in which the market value of a cryptocurrency grows.

What is Cryptocurrency Circulating Supply?

The circulating supply of a cryptocurrency is the amount of units that are currently available for use. Let's use Bitcoin as an example. There is a rule in the Bitcoin code that says that only 21 million Bitcoins can be created. Bitcoin circulating supply started at 0 but immediately started to grow as new blocks were mined and new BTC coins were being created to reward miners. There are currently around 18,52 million Bitcoins, and this number will continue to grow until 21 million BTC is mined. As 19,16 million BTC has been mined so far, we say that this is the circulating supply of Bitcoin.

What is an altcoin?

An altcoin is any cryptocurrency other than Bitcoin. The word “altcoin” is short for “alternative currency” and is commonly used by crypto investors and traders to refer to all non-Bitcoin currencies. Thousands of altcoins have been created so far after the launch of Bitcoin in 2009.

What is the difference between Bitcoin and altcoins?

Bitcoin is the oldest and most established cryptocurrency, and it has a market cap greater than all other cryptocurrencies combined. Bitcoin is also the most adopted cryptocurrency and is accepted by virtually all companies that deal in cryptocurrencies today.

However, Bitcoin is far from the only player in the game, and there are countless altcoins that have reached multi-billion dollar valuations. The second largest cryptocurrency is Ethereum, which supports smart contracts and allows users to build highly complex decentralized applications. In fact, Ethereum has grown so much that the word “altcoin” is rarely used to describe it now.

Generally, altcoins try to improve the basic design of Bitcoin by introducing technology that is absent from Bitcoin. This includes privacy technologies, different distributed ledger architectures, and consensus mechanisms.

What is a stablecoin?

A stablecoin is a crypto asset that maintains a stable value regardless of market conditions. This is most commonly achieved by pegging the stablecoin to a specific fiat currency, such as the US dollar. Stablecoins are useful because they can still be transacted across networks blockchain, avoiding the price volatility of “normal” cryptocurrencies such as Bitcoin and Ethereum. Outside of stablecoins, crypto prices can change quickly, and it is not uncommon to see the crypto market gain or lose more than 10% in a single day.

Now, let's provide a simple theoretical example of how the value of stablecoins actually remains stable.

Let's say a company creates Stablecoin X (SCX), which is designed to trade as close to $1 as possible at all times. The company will hold USD reserves equal to the number of SCX tokens in circulation and provide users with the option to redeem 1 SCX token for $1. will buy it and redeem it for profit. This will bring the SCX price back to $1.

O USDT Tether was the first stablecoin ever released and is still the most popular option on the market.

What is DeFi?

The term DeFi (decentralized finance) is used to refer to a wide variety of decentralized applications that enable financial services such as lending, lending, and trading. DeFi apps are built on top of blockchain platforms such as Ethereum and allow anyone to access these financial services simply using their cryptocurrency wallets.

What are the top 10 cryptocurrencies?

The top 10 cryptocurrencies are ranked by their market capitalization. While 10 is an arbitrarily selected number, being in the top 10 by market capitalization is a sign that cryptocurrency has a lot of relevance in the crypto market. The top 10 cryptocurrencies change frequently due to the high volatility of cryptocurrency prices. Despite this, Bitcoin and Ethereum were ranked 1st and 2nd respectively several years ago.

What cryptocurrency should I buy?

If you want to invest in cryptocurrencies, first do your own research on the cryptocurrency market. There are several factors that can influence your decision, including how long you intend to hold the cryptocurrency, your risk appetite, financial situation, etc. The reason most cryptocurrency investors own some BTC is that Bitcoin has a reputation for being the most secure, stable and decentralized cryptocurrency.

What is the difference between token and cryptocurrency?

A coin is a cryptocurrency that is the native asset on its own blockchain. These cryptocurrencies are required to pay transaction fees and basic operations on the blockchain. BTC (Bitcoin) and ETH (Ethereum) are examples of coins.

Tokens, on the other hand, are crypto assets that have been issued on top of other blockchain networks. The most popular platform for issuing tokens is Ethereum, and examples of Ethereum-based tokens are MKR, UNI and YFI. Even though you can freely trade these tokens, you cannot use them to pay Ethereum transaction fees.

What is blockchain and how is it connected with cryptocurrency?

A blockchain is a type of distributed ledger that is useful for recording the transactions and balances of different participants. All transactions are stored in blocks, which are periodically generated and linked with crypto methods. Once a block is added to the blockchain, the data on it cannot be changed unless all subsequent blocks are also changed.

A cryptocurrency would not be very useful if someone could change the transaction history to their liking – the point of cryptocurrency is that you can be sure that your coins belong only to you and that your balances will not change arbitrarily. This is why reaching consensus is of the utmost importance. In Bitcoin, miners use their computer hardware to solve resource-intensive math problems. The miner who achieves the correct solution first adds the next block to the Bitcoin blockchain and receives a BTC reward in return.

With a blockchain, it is possible for participants from all over the world to verify and agree on the current state of the ledger. Blockchain was invented by Satoshi Nakamoto for Bitcoin purposes. Other developers expanded on Satoshi Nakamoto's idea and created new types of blockchains – in fact, blockchains also have many uses outside of cryptocurrencies.

What is Cryptocurrency/Bitcoin Mining?

Cryptocurrency mining is the process of adding new blocks to a blockchain and earning cryptocurrency rewards in return. Cryptocurrency miners use computer hardware to solve complex mathematical problems. These problems are very resource intensive, resulting in high electricity consumption.

The miner who provides the correct solution to the problem first adds the new block of transactions to the blockchain and receives a reward in exchange for their work. Bitcoin miners are rewarded with BTC, Ethereum miners are rewarded with ETH and so on.

Cryptocurrencies like Bitcoin feature an algorithm that adjusts the mining difficulty depending on how much computing power is being used to mine it. In other words – as more and more people and companies start mining Bitcoin, Bitcoin mining becomes more difficult and resource intensive. This feature is implemented so that Bitcoin lock time stays close to its 10-minute target and BTC supply follows a predictable curve.

Cryptocurrencies that reach consensus through mining are called proof-of-work coins. However, alternative designs such as Proof-of-Stake are used by some cryptocurrencies instead of mining.

How can I find historical cryptocurrency market value and price data?

You can find historical cryptocurrency market capitalization and price data on PortalCripto, a comprehensive platform for cryptocurrency charts and prices. Once you have found the cryptocurrency you are interested in on PortalCripto, such as Bitcoin, go to the “History” tab and you will be able to access a complete overview of the coin’s price history. For any currency, you will be able to select a custom time period, data frequency and currency. The feature is free and you can also export the data if you want to analyze it further.

How many cryptocurrencies are there today?

There are thousands of different cryptocurrencies. At PortalCripto, you can find cryptocurrency prices for over 2.000 cryptocurrencies.

What is an ICO?

ICO stands for Initial Coin Offering and refers to a method of raising capital for projects related to cryptocurrencies today and blockchain. Typically, a project creates a token and presents its idea in a whitepaper. The project will then offer the tokens for sale to raise the necessary capital to finance the development. While there have been many successful ICOs to date, investors need to be very careful if they are interested in buying tokens in an ICO. ICOs are largely unregulated and very risky.

How is an IEO or STO different from an ICO?

STOs and IEOs are alternative token selling models that emerged after ICOs began to lose popularity.

IEO stands for Initial Exchange Offer. IEOs share many similarities with ICOs. Both are largely unregulated token sales, with the main difference being that ICOs are conducted by the projects selling the tokens, while IEOs are conducted through cryptocurrency exchanges. Cryptocurrency exchanges have an incentive to select projects before conducting a token sale to them, so the quality of IEOs tends to be better, on average, than the quality of ICOs.

What is a cryptocurrency exchange?

Cryptocurrency exchange is a platform that facilitates markets for cryptocurrency trading. Some crypto exchange examples include Binance , Bitstamp and Kraken. These platforms are designed to provide the best possible prices for both buyers and sellers. Some exchanges only offer cryptocurrency markets, while others also allow users to exchange between cryptocurrencies and fiat currencies such as the US dollar or the euro. You can buy and sell Bitcoin on virtually all cryptocurrency exchanges, but some exchanges list hundreds of different cryptocurrencies. An important metric for comparing cryptocurrency exchanges is trading volume. If the trading volume is high, your trades will execute quickly and at predictable prices.