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.
Libra Credit is a decentralized lending ecosystem that facilitates open access to credit anywhere and anytime based on the Ethereum blockchain. Libra Credit is a global initiative with a mission to provide financial inclusion and lower the cost of financial services. Powered by its proprietary big data, AI-based credit assessment technology and existing global partnership networks, Libra Credit has the expertise and capabilities to realize its mission. Libra Credit aims to offer a seamless digital lending process that can be completed in 5 steps: application, verification and credit assessment, confirmation, collateral deposit, and disbursement. The Libra Credit platform will focus on a dual-credit risk scoring mechanism that considers the creditworthiness of the pledged collateral as well as the credit information of the borrower. Borrowers will be able to pledge any crypto-assets as collateral and receive loans in their desired asset. Using smart contracts and a proprietary collateral valuation and liquidation system, Libra Credit will lock in agreed terms between borrows, lenders, custodians, guarantors and liquidators. Libra Credit was founded in 2017 and operates out of San Francisco, USA. They are backed by investors such as FBG Capital, GBIC, DHVC, Dekypt Capital, Crypto Parency, and others. Lu Hua, Co-Founder & CEO has experience in the payments, financing, and risk management industries. He was previously the CEO of moKredit, one of China’s top digital credit servicing companies. Lu was also the Head of Core Payments for PayPal China and the Head of Global Banking Platform for PayPal US. Dan Schatt, Co-Founder & COO has previously worked as the Chief Commercial Officer at Stockpile Inc., a leading fintech company, and as General Manager of Financial Innovations at PayPal. Howard Wu, Chief Scientist, he is a blockchain and cryptography expert who is a Founding Partner of Dekrypt Capital, Advisor of Blockchain at Berkeley, and Software Engineer at Google. He advises the project in a technical capacity and has received a Master’s degree in Electrical Engineering and Computer Sciences from UC Berkeley. There are already quite a few blockchain lending projects, so competition is stiff. Libra Credit’s development progress is rather early compared to its competitors. The crypto-to-crypto lending part seems to be well thought out. However, not so much with the crypto-to-fiat part. According to the roadmap, crypto-to-fiat lending is scheduled to launch in 2018 Q3. With details lacking in the weekly blog update about crypto-to-fiat lending, it is difficult to gauge whether the proposed timeline is reasonable.