QuarkChain is a secure, permission-less, scalable, and decentralized blockchain. One of the goals of QuarkChain is to utilize sharding technology to deliver over 1 million transactions per second (tps). Essentially, QuarkChain markets itself as a peer-to-peer blockchain with a high capacity throughput to help deliver fast and secure decentralized applications. The team behind QuarkChain created this blockchain to resolve the issue of scalability that all the major blockchains are currently facing. The team feels that because of the urgency of this issue, the Bitcoin community simply cannot afford to wait until they all agree on a solution. Instead, they feel that by offering different solutions, such as the one inherent in QuarkChain, this compels the community to split via a hard fork and find the solution that works best. QuarkChain encourages increased decentralization through multiple cheap nodes that then create a cluster that works as a super-full node. This prevents the high expenses associated with super-full nodes when the tps gets high. In terms of protection, all transactions within QuarkChain get the protection of 50 percent of the network’s hash power. This makes a double-spending attack incredibly challenging, particularly when combined with QuarkChain’s decentralized nature. QuarkChain relies on a two-layer blockchain structure. Sharding blockchains known as shards are the first layer, while the second layer is a root blockchain that confirms the shards’ blocks.The major work on QuarkChain began in Q2 2017 with research into the problem of blockchain scalability. In Q4 of that year, the team drafted the whitepaper. In February 2018, it released the white paper and completed verification code 0.1. March 2018 saw the 0.1 versions of both the wallet and testnet. Now in Q2, the team is working on the testnet 1.0 and smart contract 0.1. In Q4 2018, the team will have the QuarkChain Core 1.0, along with the mainnet 1.0 and the SmartWallet 1.0. By Q2 2019, both the SmartWallet and QuarkChain Core will be in their 2.0 versions. QuarkChain is a decentralized blockchain network that aims to resolve the issues of scalability that plague existing networks by using sharding technology. In this way, QuarkChain can dramatically extend the usefulness of blockchain technology since many applications are limited by the scalability of existing blockchain networks. The project is still in progress, but QuarkChain has already made many positive steps and already began invite-based beta testing for the testnet, showing significant progress and potential. The main features of Quarkchain are: 1. Reshardable two-layered blockchain: Quarkchain consists of two layers of blockchains. We apply elastic sharding blockchains (shards) as the first layer, and a root blockchain as the second layer that confirms the blocks from the first layer. The second layer that confirms the blocks from the first layer. The second layer is flexible to be resharded as needed without changing the root layer. 2. Guaranteed security by market-driven collaborative mining: To ensure the security of all transactions, a game-theoretic framework is designed for incentives, where at least 50% of overall hash powers are allocated to the root chain to prevent double spending attack on any transactions. 3. Anti-centralized horizontal scalability: In any blockchain network with a high TPS, a super-full node can be extremely expensive, which encourages centralization. In contrast, QuarkChain allows multiple cheap nodes forming a cluster to replace a super-full node. 4. Efficient cross-shard transactions: Cross-shard transactions in QuarkChain can be issued at any time, and confirmed in minutes. The speed of cross-shard transactions increases linearly as the number of shards increases. 5. Simple account management: There is only one account needed for the entire blockchain (shards) in QuarkChain. All cryptocurrencies from different shards are stored in one smart wallet.
ARK provides users, developers, and startups with innovative blockchain technologies. They aim to create an entire ecosystem of linked chains and a virtual spiderweb of endless use-cases that make ARK highly flexible, adaptable, and scalable. ARK is a secure platform designed for mass adoption and will deliver the services that consumers want and developers need. It is fast, decentralized, scalable, collaborative, bridging and open-source. The ARK Desktop Wallet is natively built for all major Operating Systems. ARK wallets connect to fully synced network peers removing the need to download the full blockchain. ARK operates using a Delegated Proof-of-Stake (DPoS) consensus algorithm. Unlike Bitcoin, in which miners with expensive rigs secure network transactions, the ARK network is secured by delegates. There are hundreds of potential delegates, but token holders in the ARK ecosystem continuously vote on who actually gets to be an active, forging delegate. Only 51 delegates make the cut. As a token holder, you’re only allowed to vote for one delegate at a time. The fee to vote/unvote is just 1 ARK, so it’s advantageous to at least vote once for a delegate you support. The more ARK tokens you own, the more powerful your vote. ARK was launched in February of this year by 27 members spread across the world. With team members located everywhere from California to Bulgaria – the ARK Crew is truly decentralized. The team currently consists of 15 core members. The ARK infrastructure is modeled heavily on that of three older projects: Bitshares, Crypti, and Lisk. In fact, some of the ARK developers were previously developers on some of those projects. Francois-Xavier (FX) Thoorens, the CTO, was a core developer at Lisk in 2016. Ark Community A diverse group of people and skill sets, including Full Stack and Web Developers, Network Engineers, Hardware Experts, Money Managers, Musicians, Traders, Social Media Promoters, and Business Owners, uniting to realize a vision shared by 30 members of the ARK Crew. All passionately devoted to collaboration and the development of the ARK ecosystem and community. Ark Token Secured by a cryptographic blockchain network similar to Lisk and Crypti, running on a Delegated Proof of Stake Consensus Algorithm developed by Bitshares. ARK DPoS provides a newly adapted voting system and incorporates many improvements over previous DPoS implementations. SmartBridge To increase the reach of the ARK platform, ARK bridges together useful and proprietary blockchains through the use of ARK SmartBridges. These SmartBridges allow for communication among validated bridged blockchains with the ability to perform tasks and advanced functions. Through the use of SmartBridges, the ARK Crew is able to connect many popular blockchains and finally create a unifying bond among different ecosystems. As examples, the first blockchains the ARK Crew will bridge are: Bitcoin, Ethereum, Lisk, 3rd Party Anonymous Network Integration, one or more proprietary gaming economy tokens (Codename: A***** [Ticker: A***]), and numerous other bridges connecting new and already existing blockchains in the future. Security Because we understand security is a major point of concern for everyone, cryptographic and security principals are incorporated throughout the entire Development Life Cycle to guarantee a secure core meeting the requirements and expectations of our users. Through continuous risk analysis and internal recurring penetration testing, we provide a system that fulfills the high standards required by this type of environment. Privacy ARK Anonymous Network Integration provides ARK users with optional privacy when sending ARK transactions throughout all of the services developed for the ARK platform. Anonymization services could be potentially provided by a 3rd Party technology integration Partnership. Self-Sustaining The ARK Crew has a mission to make blockchain technology easily accessible to consumers, even to the point where consumers do not know that they are using it. We not only develop the tools bridging the virtual with reality, but also provide the unique services consumers want, understand, and are willing to purchase using ARK. The ARK Crew develops additional platforms and services benefiting from the ARK technology, providing online and offline revenue streams for the ARK Platform, and leading to faster research and development of new and exciting ways to encourage consumer participation, educating them about blockchain technology, while simultaneously adding value to the ARK coin. By incorporating revenue streams into our projects, the ARK Crew can provide even more unique services for user adoption as we grow.