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.
Bancor is a blockchain protocol that allows users to convert between different tokens directly as opposed to exchanging them on cryptocurrency markets. The project offers a network, which we’ll discuss soon, that works to bring liquidity to the majority of tokens that lack a consistent supply/demand in exchanges. That network is built on smart contracts and a new class of cryptocurrencies that the team calls “Smart Tokens.” Bancor is looking to provide support to the illiquidity that currently exists within the cryptocurrency market. Illiquidity isn’t so much an issue for top coins like Bitcoin or Ethereum because there are always buyers and sellers looking to exchange those coins. It is definitely an issue, however, for the thousands of other tokens that may serve legitimate decentralized purposes but haven’t attracted enough attention in the market to be liquid. Bancor’s protocol uses smart contracts to create Smart Tokens, which serve as an alternative mechanism for trading. A key characteristic of the protocol is that it doesn’t call for an exchange of tokens with a second party, as in the case of cryptocurrency exchanges. Rather, it employs Smart Tokens to convert between different ERC-20 tokens internally. These conversions take place through the blockchain’s protocol and completely outside of cryptocurrency exchanges. Smart Tokens process token conversions internally by holding reserves of other ERC20 tokens within their Smart Contract. They can then convert back and forth between those reserves as users request it. The Bancor team consists of a core Foundation Council and their Advisory Board. The Foundation Council includes four individuals based out of Zug, Switzerland. Bernard Lietaer is a Belgian civil engineer, economist, author, and professor. Lietaer specialized in monetary systems and promotes the notion of communities creating their own local currencies. Guy Benartzi serves as co-founder and is recognized for founding the gaming company, Mytopia. Benartzi also co-founded Particle Code, a development studio based in Tel Aviv, Israel. Guido Schmitz-Krummacher is an executive of the Bancor Protocol foundation that’s involved with a variety of commercial entrepreneurial ventures in Switzerland. His involvement in the crypto space includes that of Bancor as well as an executive position in crowdfunding network, Tezos (XTZ). One of the key elements of the Bancor Network is the automated pricing. This comes from the Smart Tokens’ built-in automated market makers. These automated market makers mean that the tokens’ smart contracts always buy or sell Smart Tokens from or to any user in exchange for any connector token (as well as any token found in the network). The price comes from the Bancor Formula. This formula that is responsible for balancing a Smart Token’s demand and supply while also maintaining the ratio between the token’s total value with the connector token balances. The creator of the Smart Token configures these ratios, known as the connector weight. The creator can adjust them with the goal of decreasing or increasing the liquidity level of the token. The connector weight indicates price sensitivity, or how much sells and buys affect the price movement. Any time the prices no longer syncs with prices listed on external exchanges, the arbitrageurs will quickly balance the gaps.'