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 Gemini dollar — the world’s first regulated stablecoin — combines the creditworthiness and price stability of the U.S. dollar with blockchain technology and the oversight of U.S. regulators. Get Gemini dollars 1-to-1 for U.S. dollars on Gemini. Gemini dollars can be used on the Ethereum network. ISSUER The Gemini dollar is issued by Gemini Trust Company, LLC, a New York trust company. BANK U.S. dollars that correspond to the Gemini dollars issued and in circulation are held at a U.S. bank and eligible for FDIC “pass-through” deposit insurance, subject to applicable limitations. EXAMINATION The U.S. dollar deposit balance is examined monthly by an independent registered public accounting firm to verify the 1:1 peg. All Independent Accountants’ Reports are published and available here. SECURITY AUDIT The Gemini dollar is a cryptographic token built on the Ethereum Network according to the ERC20 standard for tokens. The code of the Gemini dollar smart contracts has been audited by Trail of Bits, Inc., an information security research & development firm, whose report is publicly available here. Gemini was founded four years ago with a mission: build a bridge to the future of money. Gemini dollar aims to combine creditworthiness and price stability of the U.S. dollar with blockchain and the oversight of U.S. regulators, the New York State Department of Financial Service. Gemini dollar is a stable value coin that is: 1. issued by Gemini, a New York trust company 2. strictly pegged 1:1 to the U.S. dollar 3. built on Ethereum network according to ERC20 token standards Starting 10th September 2018, you will be able to convert U.S. dollars in your Gemini account into Gemini dollars and withdraw them to an Ethereum address. You will also be able to automatically convert GUSD back as USD into your Gemini account. GUSD is expected to be listed on Bibox soon.