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.
The district0x network is a collective of decentralized and autonomous marketplaces and communities, also known as districts. These districts are built upon a decentralized and distributed open-source framework, the d0xINFRA network, which is powered by Ethereum smart contracts. The district0x network aims at creating a friction-free, virtual economy where the users will be able to make buying and selling decisions, complete transactions, and even rank their peers with just one simple click. District0x aims to develop a flexible, and free market with advanced entrepreneurial concepts. The District0x infrastructure has a very neat concept with some well-outlined features, such as the staking interface. A staking interface is put in place that allows DNT holders to have open control over the districts through an Aragon governance layer for all markets that come online. Post creation of a district, an Aragon entity will also be created that people can use to interact with this staking mechanism. After staking a user will receive voting rights in that district. Using the creation interface, one can remove central power structures from any marketplace without the additional need for development or programming skills. It can be described as the WordPress of dApps where the districts being launched are like wordpress templates and the auxiliary modules are WordPress plugins for extended functionality. While it is very difficult to buy lesser known cryptocurrencies using fiat currencies (dollars, euros) directly from crypto-exchanges, district0x or DNT can be easily purchased from various exchanges using Ethereum or Bitcoin as the base cryptocoin. Binance is one of the popular exchange platforms that can help trade Bitcoin or Ethereum for District0x. One can use various wallets like myetherwallet.com to store the district0x (DNT) coins. Coinbase, Blockchain, Exodus, Trezor Hardware Wallet are also wallets that supports district0x. District0x, differs from most coins in its underlying concept and the architecture it is built on. The concept of interconnected districts and marketplaces promises a novel structure to the modern economies. What a lot of users are missing out on is the fact that it is a staking mechanism and not just a voting token. Staking is basically the process of mining the PoS (proof of stake) coins. Early investors will be able to lock their tokens to a specific district on the network, thus being able to participate in its governance later. DNT tokens can be staked in districts, thus they not only give voting power and privileges within that district but also provide district-specific tokens depending on when the investor had started trading. For example, early investors of the PoS token will be able to make decisions about the distribution of profits among stakeholders, the intricacies of the business model etc. DNT can basically be considered as a dynamic stock in the future district0x ecosystem. By joining the district0x, the user receives district0x coins. They allow the owner to exercise the right to vote for district proposals and make decisions within certain districts. This includes, for example, voting on proposals concerning the future of a particular district or setting fees. The scope of shareholders’ rights is outlined in the bylaws and varies according to the specific scope and purpose of each district. District0x platform users can interact with the functions and services provided by each district. Users can also freely create their own districts. For example, on Ethlance, the first district in the District0x network, users can post job offers or search for new jobs.