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Frequently Asked Questions

Here you can find frequently asked questions about various cryptocurrencies.

What Makes Pax Dollar Unique?

The Pax Dollar is a stablecoin that allows any user to exchange U.S. dollars for the Pax Dollar Tokens. Its main goal is to stabilize the dollar with blockchain technology. The Paxos company has a charter from the New York State Department of Financial Services that allows them to offer regulated services within the crypto asset world. The token itself is backed by the USD in accounts that are held by the company at the U.S. depository institutions. Pax Dollar was built in order to improve the larger financial ecosystem through the creation of a frictionless global network. Here, all digital assets can be mobilized quickly, with a high level of flexibility and accessibility. Paxos’s goal is to create a future where digital assets, commodities and securities can be transferred anywhere, anytime.

Who Are the Founders of Pax Dollar?

The Pax Dollar was created by Charles Cascarilla and Rich Teo. Charles Cascarilla is the CEO and co-founder of Paxos. He is also the founding board member of the Association for Digital Asset Markets (ADAM), and a partner at Liberty City Ventures. He also co-founded and is a partner at Cedar Hill Capital Partners, and his past experience includes a portfolio manager at Claiborne Capital Management, financial analyst at Goldman Sachs and analyst at the Bank of America. Rich Teo is the second co-founder of Paxos. Before that, he worked as a principal/senior Analyst at Cedar Hill Capital Partners. He was also a financial analyst at Citi, and a combat signaler at the Singapore Armed Forces.

What Is Pax Dollar (USDP)?

Founded in September of 2018, Pax Dollar is a flat-collateralized [stablecoin](https://coinmarketcap.com/alexandria/article/what-is-a-stablecoin). Stablecoins are cryptocurrencies that are designed to minimize the volatility of the price of the stablecoin, relative to a certain stable asset or a basket of assets. A stablecoin can be pegged to a cryptocurrency or flat money. In some cases, it can even be traded for commodities. Pax Dollar offers the advantage of transacting with blockchain assets through minimized price risk. The Pax Dollar tokens (USDP) are issued as[ ERC-20 tokens](https://coinmarketcap.com/currencies/erc20/) on the [Ethereum](https://coinmarketcap.com/currencies/ethereum/) blockchain and are collateralized 1:1 through the USD held in Paxos-owned US bank accounts.

LUKSO, the Blockchain for the new digital lifestyle is created by former Ethereum Developer Fabian Vogelsteller, author of ERC20 and ERC725, developer of web3.js and the Mist Browser. LUKSO is a multiverse blockchain network where the worlds of fashion, gaming, design and social media intersect. LUSKO focuses on bringing Blockchain to the masses, through its smart contract based blockchain, industry-involving standards processes and an innovative new direction of decentralized applications.

Metars is a combination of art gallery and religious site in the metaverse world. We will build a crystallization of human civilization with the support of VR technology, and Metars will finally display the greatest works of art with the most religious, divine and human enlightenment values in human history. Metars will gradually develop into a completely free open world through the joint construction of all residents.

Where Can You Buy Gitcoin (GTC)?

You can buy Gitcoin on Binance, Coinbase, Kucoin and other exchanges. Check out our market pairs tab for more information.

How Is the Gitcoin Network Secured?

GTC has no economic value, according to the token’s introductory [blog post](https://gitcoin.co/blog/introducing-gtc-gitcoins-governance-token/). Gitcoin is a fork of the COMP/UNI governance system, with a built-in delegation prompt in the retroactive claim process.

How Many Gitcoin (GTC) Coins Are There in Circulation?

The total supply of GTC is 100,000,000 tokens. 15% is set aside for a retroactive airdrop, 50% is in the Gitcoin DAO and 35% is for existing stakeholders. The retroactive airdrop is for past users of Gitcoin, the DAO allocation is for governance purposes and the existing stakeholders include anyone who has contributed to building Gitcoin in the past or the future (with a vesting schedule of at least two years for Gitcoin team members). For more information about GTC’s distribution, see [here](https://gitcoin.co/blog/introducing-gtc-gitcoins-governance-token/).

What Makes Gitcoin Unique?

Gitcoin inspires a world shaped by community-led positive change and has helped create more than $29 billion in global financial impact.. Gitcoin cultivates and nutures the “Quadratic Lands” — a ecosystem with digital democracy and a strong emphasis on community building.

Who Are the Founders of Gitcoin?

Gitcoin was founded by Keving Owocki and Scott moore. Since then, Gitcoin underwent shift from a monolithic platform to a suite of modular protocols and embraces a spectrum of mechanisms like Quadratic Voting, Direct Grants and Retroactive Public Goods Funding.

What Is Gitcoin (GTC)?

Gitcoin creates technologies and opportunities that empower communities to fund, build, and protect what matters. Through the Gitcoin Grants Program, there has been over $54 million distributed to early-stage builders that champion public goods initiatives in decentralized finance (DeFi), climate, open sourcing, and beyond. Core products include Gitcoin Grants Stack, the end-to-end grants management solution, Allo Protocol, an open-source funding protocol, and Gitcoin Passport, an all-encompassing decentralized identity management tool. GTC is Gitcoin’s governance token, launched in late May 2021. The token is needed for the creation and funding of the DAO that will govern Gitcoin.

MiL.k platform connects various service companies in travel, leisure, and lifestyle sectors by enabling integration and trade of their reward points using Milk Coin (MLK) as the key currency

Metal DAO (MTL) is a utility token that currently governs the stablecoin Metal Dollar (XMD), in addition to providing tiered trading discounts to MTL holders when using the Metal Pay cash & crypto app. Metal Pay customers who own 10,000+ MTL can enjoy 0% fees on all cryptocurrency purchases. Metal DAO's future utility includes the ability to propose new stablecoins for the Metal Dollar basket, including their allocation ratios, and the option to vote in new stablecoin issuers such as community banks or fintechs. Metal Pay was developed and launched by Metallicus in 2016.

What Is Mines of Dalarnia (DAR)?

Mines of Dalarnia (DAR) is an action-adventure game with a blockchain real-estate market. MoD is based on a simple and simultaneously captivating gameplay, where users can mine and combine in-game items, then utilize them to upgrade their characters (skills and equipment), thereby increasing their rank in the game. Players can go in search of rare artifacts / relics / minerals, complete quests, team up with other players to defeat monsters and unlock rewards. Mines of Dalarnia is a [play-to-earn](https://coinmarketcap.com/alexandria/glossary/play2earn-play-to-earn) game with procedurally generated levels, where the task is to uncover the secrets of the MoD universe. Users explore territories, mine resources, and fight enemies. Players in the MoD universe make a profit by collecting rare items and trading them on the marketplace, completing quests and tasks, winning battles, acquiring the status of a landowner, and staking DAR tokens. The game is primarily owned by users, as assets are non-fungible tokens ([NFTs](https://coinmarketcap.com/alexandria/article/what-is-a-non-fungible-token-nft)) that can be traded on open markets. All transactions are recorded on the blockchain to avoid centralized party intervention. So, to summarize, Mines of Dalarnia is free to play and follows an action-adventure gameplay. The project is dedicated to battling, mining and gathering resources with the integration of NFT elements that are minted, exchanged and transferred to the marketplace. The Mines of Dalarnia roadmap dates back to Q3 2021. DAR tokens were first released on October 29, 2021 on the Binance Launchpool with a farming period of October 29, 2021 - November 27, 2021. Who Are the Founders of Mines of Dalarnia? Mines of Dalarnia is developed by Workinman Interactive. The company works on hundreds of games and apps every year, developing the underlying technologies, product concepts, graphical interface, animation and sound. The team provides rich interactive opportunities and is also responsible for the social appeal of projects. Workinman has a number of notable global clients and partners such as Disney, Marvel, Nintendo, Atari, NBCUniversal, Nickelodeon, Sesame Street, Intel, and Pepsi. The company was founded in 2006 by Jason Arena, who owns the studio and holds the current position of CEO. Since 2006, the team has managed to develop a huge number of products for the mobile, web and entertainment industries, and in 2019, they ventured into blockchain games. According to Arena, Workinman Interactive has a team of around 40 people, including skilled designers, illustrators, animators and developers who have invested their talent in over 350 projects. What Makes Mines of Dalarnia Unique? The goal of the developers is to form a solid community and attract even those unfamiliar with blockchain technology and the world of cryptocurrency. The gameplay of Mines of Dalarnia proceeds as follows: players collect resources, extract minerals and team up with other gamers to complete quests in order to move up to a higher level. There are two types of characters in the game - miners and landowners, and both seek to enrich themselves with the main resource of the game - mines and lands. Various types of tools and weapons are used for mining; the higher the power and capabilities of the equipment, the faster certain types of resources are extracted. On the in-game marketplace, users can trade, buy and sell minerals, and pay for transaction fees in DAR tokens. Assets in the game are created in the NFT format, which is a key feature for maintaining the game’s economy. Users can monetize their gaming experience by trading on external and internal marketplaces. Through the governance process, players have a direct impact on the development of the game. Users can be rewarded for active participation or for winning competitions. Moreover, by leasing their land plots, users receive passive income. Thus, the DAR economy is based on incentivizing the players to remain invested in the game. Another element of the MoD gameplay is related to real-estate: players can purchase land and rent it out, receiving profit, plus they can simply lease a plot of land and use it to collect resources. Mines of Dalarnia (DAR) seeks to establish a tiered structure that gives players the ability to influence the development of the ecosystem. The concept is to create a full-fledged autonomous gaming platform with community support and governance, where all token holders have influence over land issues, mining policies and the general economics of the game. Related Pages: Take a deep dive into [Mines of Dalarnia](https://coinmarketcap.com/alexandria/article/what-is-mines-of-dalarnia-dar-features-tokenomics-and-price-prediction). Read about [CryptoBlades (SKILL)](https://coinmarketcap.com/currencies/cryptoblades/) and [Axie Infinity (AXS)](https://coinmarketcap.com/currencies/axie-infinity/) - two of the top P2E games. Read more about other popular NFT games with huge potential: [Alien Worlds (TLM)](https://coinmarketcap.com/currencies/alien-worlds/), [Splintershards (SPS)](https://coinmarketcap.com/currencies/splintershards/), and [The Sandbox (SAND)](https://coinmarketcap.com/currencies/the-sandbox/). Learn about what Play-to-Earn (Play2Earn) is with our [glossary](https://coinmarketcap.com/alexandria/glossary/play2earn-play-to-earn). Check out an overview of the [top NFT games](https://coinmarketcap.com/alexandria/article/top-nft-games) dominating the market. Cryptocurrency newbie? Find all the information you need with [CMCAlexandria](https://coinmarketcap.com/alexandria). How Many Mines of Dalarnia (DAR) Coins Are There in Circulation? DAR is the primary native token of Mines of Dalarnia with a maximum supply of 800,000,000 coins, the allocation is as follows: 26% to Foundation & Marketing; 22% to the Team & Advisors; 20% to Play-to-Earn; 15% to Private Sale; 14% to Liquidity & Ecosystem; 3% to Binance Launchpool. As of November 2021, 123,200,000.00 $DAR is in circulation. Key features of DAR:

Where Can You Buy Orbs (ORBS)?

In the rapidly evolving[ DeFi](https://coinmarketcap.com/alexandria/article/what-is-decentralized-finance) ecosystem, the Orbs blockchain platform has managed to implement a set of integrations with decentralized exchanges (DEXs). As of July 2021,[ ORBS](https://coinmarketcap.com/currencies/orbs/)' share of the total cryptocurrency market is 0.01%, and the list of exchanges where ORBS can be traded includes[ Bithumb](https://coinmarketcap.com/exchanges/bithumb/),[ KuCoin](https://coinmarketcap.com/exchanges/kucoin/),[ Bittrex](https://coinmarketcap.com/exchanges/bittrex/),[ OKEx](https://coinmarketcap.com/exchanges/okex/),[ Indodax](https://coinmarketcap.com/exchanges/indodax/),[ ProBit Global](https://coinmarketcap.com/exchanges/probit-exchange/),[ Upbit](https://coinmarketcap.com/exchanges/upbit/),[ Hotbit](https://coinmarketcap.com/exchanges/hotbit/),[ Bilaxy](https://coinmarketcap.com/exchanges/bilaxy/),[ Coinone](https://coinmarketcap.com/exchanges/coinone/),[ Huobi Korea](https://coinmarketcap.com/exchanges/huobi-korea/),[ LiteBit.eu](https://coinmarketcap.com/exchanges/litebit/),[ Bitsonic](https://coinmarketcap.com/exchanges/bitsonic/),[ KyberDMM (Kyber Dynamic Market Make Protocol)](https://coinmarketcap.com/exchanges/kyberdmm/),[ BHEX (BlueHelix Exchange)](https://coinmarketcap.com/exchanges/bhex-bluehelix/), and[ Bitbns](https://coinmarketcap.com/exchanges/bitbns/). Cryptocurrency newbie? Learn how to buy[ Bitcoin](https://coinmarketcap.com/currencies/bitcoin/) and other tokens with our[ guide](https://coinmarketcap.com/how-to-buy-bitcoin/).

How Is the Orbs Network Secured?

The proof-of-stake ([PoS](https://coinmarketcap.com/alexandria/article/proof-of-work-vs-proof-of-stake)) ecosystem is the basis for the Orbs network and ensures its security and smooth operations, thereby optimizing the platform for DApps. For its part, randomized proof-of-stake (RPoS), is both fast and secure. For each round of consensus, a selection is made from a set of validators, executed by small, random committees. This randomization and set of validators serve to establish security and decentralization and, with the committees’ help, consensus is achieved. This Orbs model is called Helix. It’s a[ Byzantine fault-tolerant](https://coinmarketcap.com/alexandria/glossary/byzantine-fault-tolerance-bft) and scalable algorithm, in which guardians and delegators use a stake to select validators.

How Many Orbs (ORBS) Coins Are There in Circulation?

Orbs is an[ ERC-20](https://coinmarketcap.com/alexandria/glossary/erc-20) token that operates on the Ethereum platform. Tokens are the main means of payment for all services on the Orbs platform. Via the token, users can pay for services from infrastructure operators and the token is also used to select validators and to manage the protocol in general. The network’s total supply is 10 billion[ ORBS](https://coinmarketcap.com/currencies/orbs/) tokens. This supply is fixed and is generated using a process called priming. The distribution of tokens is as follows: 55% for long-term reserves, 20% for private sales, 20% for the team and founding partners, 5% for advisors.

What Makes Orbs (ORBS) Unique?

Orbs is a public blockchain platform that supports[ smart contracts](https://coinmarketcap.com/alexandria/glossary/smart-contract) and works by complementing the already existing[ Ethereum](https://coinmarketcap.com/currencies/ethereum/) standards. This combination of Orbs and Ethereum allows[ DApps](https://coinmarketcap.com/alexandria/glossary/decentralized-applications-dapps) on the platform to take advantage of both chains at once, enjoying security, liquidity, low tariffs, scalability and access to payment infrastructure.

Who Are the Founders of Orbs?

There are four people behind Orbs: Daniel Peled, Tal Kol, Netta Korin and Uriel Peled. Daniel Peled is president of Orbs. He is also the co-founder and CEO of an Israeli fintech startup called PayKey. Peled is a veteran of the Israeli[ Bitcoin](https://coinmarketcap.com/currencies/bitcoin/) community and holds an LLM and Bachelor’s of Science in Economics. Tal Kol holds a Bachelor’s of Science in Computer Engineering from the Technion, a university in Haifa, Israel. He’s an expert in blockchain applications and was formerly the head of engineering at Kin by Kik Interactive. Prior to Orbs, he co-founded Appixia, a mobile app startup that was acquired by Wix.com. Netta Korin began her career on Wall Street as an investment banker and later retrained as a hedge fund manager. Korin has an impressive philanthropic background. Moreover, prior to her success at Orbs, she served as senior advisor to Deputy Minister for Diplomacy Dr. Michael Oren in the Israeli Prime Minister’s Office. Uriel Peled is a consultant on a number of blockchain projects, which has earned him a reputation as one of the most influential and respected tech personalities in Israel. He has a degree in electrical engineering from the Technion. Before joining the Orbs team, Peled co-founded Visualead, an AR/VR startup that was later acquired by Alibaba.

What Is Orbs (ORBS)?

[Orbs](https://coinmarketcap.com/currencies/orbs/) is a public[ blockchain](https://coinmarketcap.com/alexandria/glossary/blockchain) infrastructure that combines scalability, low fees, performance, security, and ease of use. The platform is designed for mass-use applications and supports a complete blockchain stack. The Orbs platform is a decentralized, open and transparent network that offers practical blockchain solutions for enterprises and other large-scale consumer applications. The Orbs protocol uses the ORBS token, which calculates commissions for executed applications and provides an incentive system that is used to select validators, thereby ensuring the integrity of the network. The ORBS token serves as the only means of payment on the Orbs platform. Orbs was established in 2017 and was developed by experienced engineers, businessmen and scientists who have managed to create an infrastructure that uses blockchain virtualization and randomized proof-of-stake (RPoS) to ensure blockchain[ scalability](https://coinmarketcap.com/alexandria/glossary/blockchain-trilemma).

XYO (XYO) is a cryptocurrency and operates on the Ethereum platform. XYO has a current supply of 13,931,216,938 with 13,476,747,692 in circulation. The last known price of XYO is 0.00752388 USD and is down -4.93 over the last 24 hours. It is currently trading on 64 active market(s) with $2,626,256.65 traded over the last 24 hours. More information can be found at https://xyo.network/.

Where Can You Buy MediBloc (MED)?

MediBloc (MED) is available for purchase on the following crypto exchanges: [Bithumb](https://coinmarketcap.com/exchanges/bithumb/), [Bittrex](https://coinmarketcap.com/exchanges/bittrex/), [Gate.io](https://coinmarketcap.com/exchanges/gate-io/), [Osmosis](https://coinmarketcap.com/exchanges/osmosis/), [Upbit](https://coinmarketcap.com/exchanges/upbit/), [Korbit](https://coinmarketcap.com/exchanges/korbit/), and more. Want to keep track of MED in real-time? Download the CMC [mobile app](https://coinmarketcap.com/mobile/).

How Is the MediBloc Network (MED) Secured?

Launched in December 2017, MED was originally deployed in the [Ethereum](https://coinmarketcap.com/currencies/ethereum/) ecosystem as a decentralized application ([dApp](https://coinmarketcap.com/alexandria/glossary/decentralized-applications-dapps)) running on the Ethereum Virtual Machine ([EVM](https://coinmarketcap.com/alexandria/glossary/ethereum-virtual-machine-evm)). In 2018, MED was re-released on the [Qtum](https://coinmarketcap.com/currencies/qtum/) blockchain, then the project moved to [Cosmos](https://coinmarketcap.com/currencies/cosmos/) through the Cosmos Software Development Kit (SDK). In 2019, the decision to formulate and launch its own [mainnet](https://coinmarketcap.com/alexandria/glossary/mainnet) was announced. The platform operates on the Delegated Proof-of-Stake ([DPoS](https://coinmarketcap.com/alexandria/glossary/delegated-proof-of-stake-dpos)) consensus algorithm, an evolution of the fundamental concepts of Proof-Of-Stake ([PoS](https://coinmarketcap.com/alexandria/glossary/proof-of-stake-pos)). DPoS is one of the most energy efficient models, providing network security through the approval voting of delegates.

How Many MediBloc (MED) Coins Are There in Circulation?

MED is a native utility token of the MediBloc platform. It’s required for storage payments, insurance payments, and transactions. MED is also used to reward users who have contributed to the growth of the MediBloc ecosystem. In terms of [tokenomics](https://coinmarketcap.com/alexandria/glossary/tokenomics), the distribution of tokens is as follows: 50% to participants of the [ICO](https://coinmarketcap.com/alexandria/glossary/initial-coin-offering-ico); 20% to the team; 12% to development; 10% to investors and advisors; 8% to research.

What Makes MediBloc (MED) Unique?

MediBloc's main goals include building a patient-centric health data platform, empowering data and encouraging users to maintain a healthy lifestyle. The project aims to revolutionize the healthcare sector by becoming a unified real-time patient database. The decentralized platform brings together patients, healthcare providers and medical researchers. The patient is the ultimate owner of his or her own health data, records, treatment history and more. Data loss is prevented by backups, and only reputable medical institutions and trusted healthcare affiliates are allowed to make changes. Additionally, the blockchain system provides an increased level of network security, minimizing risks such as fraud and data hacking. According to the protocol, this will minimize redundant data, ensure streamlined treatment, efficient medical care and greater accuracy of diagnoses. The platform provides an objective incentive system, where all contributors (data owners) are rewarded in MED tokens.

Who Are the Founders of MediBloc (MED)?

MediBloc, was launched in 2017 by a team of qualified doctors in collaboration with experienced entrepreneurs and talented developers. Dr. Allen Wookyun Kho and Dr. Eunsol Lee are the co-founders of the South Korean company. They are healthcare professionals with experience and numerous achievements in medicine, as well as software engineering. Allen Wookyun Kho holds a Bachelor of Science from Korea Advanced Institute of Science and Technology, a Master in Computer Science from Columbia University (New York, US), and a Master of Dentistry from Kyung Hee University (Department of Dentistry). Kho is a former lead software engineer at Samsung Electronics where he was deeply involved in the Galaxy S software development process. Eunsol Lee holds a Bachelor of Medicine from College of Medicine, Hanyang University, and a Master of Medicine from College of Medicine, University of Ulsan. Lee specializes in radiology and biomedical informatics and has an impressive track record, including being a developer at NEXON, a radiology specialist at Asan Medical Center and a public health doctor. Lee was a former member of the Presidential Committee on the Fourth Industrial Revolution (PCFIR), and a representative of the Special Committee (Digital Healthcare) under the PCFIR.

What Is MediBloc (MED)?

MediBloc (MED) is a South Korean-based [decentralized](https://coinmarketcap.com/alexandria/glossary/decentralized) [blockchain](https://coinmarketcap.com/alexandria/glossary/blockchain) protocol for the healthcare industry through which medical institutions can securely transfer, collect, store and manage data. With MediBloc, physicians can access patient information, medical history, prescribed medication, insurance issues and more. MediBloc makes medical data more accessible by allowing everyone involved to track and record medical conditions, appointments, examinations, treatments and more. The ecosystem is built on three key elements: MediBloc Core (a layer for storing data and providing additional storage), MediBloc Application (a layer for accessing and managing data through various applications), and MediBloc Service (a layer applying [smart contract](https://coinmarketcap.com/alexandria/glossary/smart-contract) technology that connects the other layers and allowing input and output of data). The platform offers three categories of accounts: for general users (patients), healthcare providers (doctors and medical institutions) and data scientists, the latter two require proof of their accreditation. The project is aimed at improving the quality of medical services and infrastructure by optimizing information storage processes and giving users sovereignty over their own data. MediBloc is compliant with the HIPAA Security Rule, the Health Insurance Portability and Accountability Act.

Where Can You Buy Spell Token (SPELL)?

[Spell Token](https://coinmarketcap.com/currencies/spell-token/) (SPELL) is available on [SushiSwap](https://coinmarketcap.com/exchanges/sushiswap/) and [Gate.io](https://coinmarketcap.com/exchanges/gate-io/).

Can Spell Token Hit $1?

Although [Spell Token](https://coinmarketcap.com/currencies/spell-token/) (SPELL) has been in a continuous uptrend and has an impressive market capitalization of almost 2 billion dollars, it is unlikely that it will ever hit $1, due to its enormous total supply. If the community decided to [burn](https://coinmarketcap.com/alexandria/glossary/burned) more SPELL from the total supply and if Abracadabra integrated with more protocols, SPELL could continue its uptrend in the future and reach new all-time highs.

How Is the Spell Token Network Secured?

Abracadabra is a multichain [protocol](https://coinmarketcap.com/alexandria/glossary/protocol), with [Spell Token](https://coinmarketcap.com/currencies/spell-token/) (SPELL) therefore available on [Ethereum](https://coinmarketcap.com/currencies/ethereum/) (ETH), [Avalanche](https://coinmarketcap.com/currencies/avalanche/) (AVAX), [Fantom](https://coinmarketcap.com/currencies/fantom/) (FTM), and Arbitrum. Ethereum is one of the most popular [blockchains](https://coinmarketcap.com/alexandria/glossary/blockchain) out there and is the go-to solution for many [decentralized application](https://coinmarketcap.com/alexandria/glossary/decentralized-applications-dapps) (DApp) developers. A set of [nodes](https://coinmarketcap.com/alexandria/glossary/node) validate transactions and secure the Ethereum blockchain, and the network is in the process of transitioning from using a [proof-of-work](https://coinmarketcap.com/alexandria/glossary/proof-of-work-pow) (PoW) [consensus mechanism](https://coinmarketcap.com/alexandria/glossary/consensus-mechanism) to [proof-of-stake](https://coinmarketcap.com/alexandria/article/proof-of-work-vs-proof-of-stake) (PoS). Unlike PoS or PoS, Avalanche uses a directed acyclic graph ([DAG](https://coinmarketcap.com/alexandria/glossary/directed-acyclic-graph-dag)) protocol, in which all nodes process and validate transactions. Fantom uses its own proprietary [consensus mechanism](https://coinmarketcap.com/alexandria/glossary/consensus-mechanism), which allows both for higher capacity and two-second transaction finalization, alongside security improvements. Arbitrum is a [layer two](https://coinmarketcap.com/alexandria/glossary/layer-2) scaling solution for Ethereum that uses [optimistic rollups](https://coinmarketcap.com/alexandria/glossary/optimistic-rollup) to achieve faster transaction times and near-zero [gas](https://coinmarketcap.com/alexandria/glossary/gas) fees.