ASCH is a new generation block chain innovation application development platform based on side chain structure which is efficient, flexible, safe, low-cost and reused. With the use of JavaScript as its application programming language, the platform makes use of relational databases to store data, drawing similarities between developing a DAPP and developing a traditional web application. This type of platform carries a great deal of appeal to developers, as well as small and medium enterprises, since its ease of use results in greater productivity, fuelling and facilitating a more prosperous ecosystem in the process. ASCH is open in design and is not limited to any particular niche market such as news aggregation, the issue of assets, arbitration, the existence of certificate, property rights certification, the Internet of things, supply chain finance, asset digitization, commodity tracing, prepaid card system, block chain contract deposit etc. In terms of the consensus mechanism, ASCH has inherited and enhanced the DPOS algorithm, simultaneously reducing the probability of forking and double spending by a significant degree. Furthermore, ASCH’S side chain, i.e. the application mode, not only improves scalability by delaying the expansion of the block chain, but also makes DAPPS more flexible and personalized. ASCH is a forward-looking, low-cost and one-stop application solution, which is believed to be a new generation of incubator for decentralized applications. Adhering to the values of enterprise accomplishments, innovation leading, technology belief and embracing future, ASCH is devoted to building a global commercial block chain application ecosystem, which is not only using block chain technology to empower various industries, but also being the base of the world class economy. The services provided by the ASCH platform include a public chain and a set of application SDKs; the public chain is called the main chain. The ASCH application SDKs can be used to develop blockchain applications with a free-running, immutable ledger. These applications are also known as side chain applications. An application SDK has a built-in cross-chain protocol, through which the side chain can communicate with the main chain. In other words, the main chain has the function of asset routing, through which a variety of assets can flow among different applications. ASCH’s ecological system contains multiple chains, with each chain possessing the ability to carry multiple tokens or assets. Each token or asset can also be transferred to multiple chains.
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.