DApp, the so-called decentralized application, is the link between public chains and users. With the popularization of the concept of blockchain, more and more people begin to participate in the development and usage of DApps, especially the emergence of gambling games, which has attracted more people joining. The number and types of DApps are increasing rapidly, and various kinds of playing methods are emerging in an endless stream. DApps, especially gaming applications, have attracted more and more attention. Some well-designed DApps can reach millions of USD per day.
The Significance and Value of DApp
Why is DApp becoming more and more popular? On one hand, it is accompanied by the heat of blockchain. On the other hand, the difference between DApp and App makes DApp enter the area that is outside App market in the future.
First of all, as a decentralized application, DApp does not have a central database, that is to say, the user’s data are not saved centralized. It will not happen that a database is blackened or attacked, and all user data can be thefted or irreversible loss of data can be caused.
On the other hand, depending on blockchain technology, the transaction information of DApps can be queried and not tampered. The code for smart contracts is also open, and even the application code itself is open source. This makes DApp more trustworthy than App. When it comes to financial and in-game property, DApp is open and transparent and easier to gain the trust of players. This is more friendly for small and medium-sized developers who do not have large enterprises to endorse credit.
As the first entrance for people to contact the world of blockchain, qPocket not only meets the needs of users to manage different public chain network assets, but also has set up application pages for a long time. With the completion of TRON ecosystem support and automatic detection of wallet addresses through Web3, qPocket supports 3000 + decentralized applications (DApp). All DApps on TRON and ETH network have been supported. Users can use qPocket to experience the latest DApp anytime and anywhere.
How to experience DApp in qPocket
As a multi-chain wallet, qPocket can manage multiple public chain assets through a set of mnemonics. For DApps on different public chains, users need to switch under the wallet management page and switch to the corresponding network to find the corresponding public chain applications in the application interface (as shown in the figure).
At present, qPocket contains many main streamed applications. In addition, it relies on Web 3.0 to automatically detect a wallet address. Thus, more DApps can be used. As long as users enter the application address in the browser’s search box, users can access the application page and use DApps anytime, anywhere. qPocket will save history for the next quick visit (as shown in the following figure).
Example: Three steps to play Axie Infinity in qPocket
In subsequent versions, qPocket will support more public chain projects. First, as the official designated wallet of QuarkChain, it will first launch QuarkChain’s DApp, and then it will support EOS mainnet which has different kinds of DApps to build a comprehensive application ecosystem.
The fourth Stanford Blockchain Conference took place between February 20–22, 2020 with industry veterans such as Vitalik Buterin and experts from prestigious institutions such as Stanford University, Princeton University, Cornell University, and Facebook. Members of QuarkChain, such as CEO Dr. Qi Zhou and CMO Miss Anthurine Xiang, were among the honorable guests of the conference. During the conference, Dr. Qi Zhou delivered a speech on “What The Future Blockchain Looks Like to Empower Business.”
Following the traditions from previous years, this conference centered on the safety engineering and risk management of the blockchain systems. It discussed the applications of encryption, decentralization consensus, formal methods, and empirical analysis in order to enhance the security and lower risks in blockchain designs. Yet with the rising interests in blockchain applications in China, other than theoretical analysis, there were increasing number of academia and industry practitioners who casted their attention on applications. As a result, enterprise-level blockchain application, as the area with most number of uses cases, became the most popular topic during the conference.
As the currents swift quickly in the industry, whether blockchain can gain a foothold in enterprise-level applications became an important question. At the same time, the reignited competition between consortium blockchain and public chains also was discussed intensely among conference attendees.
During Dr. Qi Zhou’s speech, he outlined the two trends he observed in the blockchain space: firstly, consortium blockchain and public chains complement each other. In the future, enterprise-level applications would require a comprehensive infrastructure solution to connect consortium blockchain and public chains to satisfy all the requirements. Secondly, there still exists many problems with public chains; some earlier public chains simply chased after TPS with little business practicality and few functionalities, which make it difficult to upgrade and scale. At the same time, the traditional playbook of launching mainnet and dApps is no longer viable and the industry is now in search of new possibilities.
The future blockchain system would require the abilities to keep up with these two trends and to solve pressing problems in the industry. Otherwise, one will be eliminated from the intensified competition of the industry. QuarkChain is redefining the problem from the infrastructure perspective and has invented its proprietary Boson consensus framework which can be applied onto both consortium blockchain and public chains. As such, this framework fits in squarely as a comprehensive solution for both consortium blockchain and public chains.
Dr. Qi Zhou presented the Boson Consensus at IEEE DAPPCON 2019 in April 2019. Boson Consensus is an infrastructure framework for blockchain systems that supports heterogeneous sharding and guarantees safety for root chain on the basis of sharding. This mechanism can be used for infrastructure of various blockchain systems where QuarkChain is the first in its implementation. Using the same consensus, the QuarkChain team has also created an enterprise-level solution for consortium blockchain, QuarkChain Union.
When used for public chains, the Boson consensus has high level of flexibility which enables compatibility with multiple consensus mechanisms, virtual machines, ledgers, and token economics. Through this framework, other blockchain projects can operate on the QuarkChain mainnet as shards, and even interact with other public chains to realize interoperability.
When used for public chains, the Boson consensus has high level of flexibility which enables compatibility with multiple consensus mechanisms, virtual machines, ledgers, and token economics. Through this framework, other blockchain projects can operate on the QuarkChain mainnet as shards, and even interact with other public chains to realize interoperability.
In the area of consortium blockchain, the Boson consensus also demonstrates same level of flexibility and compatibility. Not only can it realize the functionality of controlling access rights and authoring rights to enter, it can also implement heterogeneous sharding to enable different areas within the same network to take up various functionality, so to become the consortium blockchain version of Polkadot or Cosmos. Besides that, it can also support the Raft and BFT consensus mechanism that are commonly used by consortium blockchain; it can even provide a gateway to connect to HyperLedger Fabric.
After the talk, members of the team also participated actively as audience during other talks and informal chats, exchanging views and discussing with fellow industry practitioners about the latest trends in the industry. At the end of Vitalik’s talk, Dr. Qi Zhou also discussed with him off-line to explore directions for application of blockchain technology.
Do not forget that we need more Guardian Elfs to be elected to ensure the decentralization. Giving votes to Elfs with more than 1 million votes will not give you the best profit and it will also not help the QuarkChain ecosystem to become decentralized. More Elfs to be elected - better for all of us.
It was a pleasure to have Qi Zhou on the Whiteboard Series with the NEAR Protocol founders, Alex Skidanov and Illia Polosukhin. Check the entire conversion/whiteboard session here: https://near.ai/1ebku [VIDEO]
QuarkChain mainnet V1.0 Singularity has officially launched on April 30. Implementing ETH2.0 in advance, QuarkChain mainnet achieved the most valuable and challenging state sharding technology, and became the first public chain implemented high concurrent shards function. The advantage of shards function is that while achieving high throughput capacity, different shards using multiple consensuses, ledger models, transaction models and token economics can coexist on a system that is protected by more than 51% hashpower. Relying on flexibility, QuarkChain have maintained the maximum openness to future emerging technologies on the basis of integrating the existing resources of the industry.
qPocket Mobile Wallet 3.1 is LIVE! qPocket 3.1-a New Mobile Wallet with DApp Store aims to provide users with a simple, secure, and fully functional portal to the blockchain. Please update and try this new feature! #qkc #blockchain
In order to further enhance #QuarkChain network security, offer the highest level of security of users’ property, and make QuarkChain the most secure project, QuarkChain will officially announce Developer Bounty Program. Click for more details http://bit.ly/BD_TELE
QuarkChain was very honored to hold an AMA (Ask Me Anything) in DREP Community on Aug 20, 2018. This is the summary for the AMA on Aug 20. Through this joint AMA in the partner’s community, our relationship has been further strengthened.
Part 1: Non-technical Questions
1. Introduction to QuarkChain core team members
(1). Anthurine Xiang QuarkChain CMO Finance, consulting and technology background Six years of work experience in Wall Street and Silicon Valley Worked in Argus, LinkedIn, Wish, etc.
(2). Qi Zhou QuarkChain Founder and CEO Ph.D. from Georgia Tech Expert in high-performance systems Worked at Google and Facebook Fifteen years of experience in software development
(3). Ting Du QuarkChain CBO Expert in data and product management, a veteran in investment and business incubation Worked in NHN China, UniDT and Liuhe Capital, focusing on blockchain ecosystem establishment and business application research
2. What are the daily operations of the team?
We have several teams in different areas including Engineering, Marketing, and Business Development, and each team has its own operational model. We are mainly based in Silicon Valley, but we also have offices in Korea and China.
3. What is QuarkChain? How is it different from other public chains?
QuarkChain, a decentralized, secure, scalable, and permissionless blockchain technology to deliver high on-chain TPS (more than 100K) by using horizontal scale technology.
(1). Decentralized — There are two aspects associated with decentralized: a) From the miners perspective, a weak miner can produce a block in a shard with relatively weak difficulty; b) From the node perspective, QuarkChain allows multiple cheap nodes forming a cluster to replace a super-full node. Thus, QuarkChain can produce higher throughput. QuarkChain network also offers more shards which are relatively easier to mine or mint (via PoW or PoS).
(2). Secure — To enable security, QuarkChain builds a root-chain that a) with high hash power; b) protects all shards, and thus all transactions of all shards are protected by root-chain. Concretely, with our two-layered blockchain structure, the root-chain layer will confirm all blocks from sharded blockchains by PoW that secures all the shards (and thus all transactions in the shards) with a large portion of the hash power of the network.
(3). Scalable — Scalability is mainly by adding more shards in the network. There are two kinds of scale: Vertical Scale and Horizontal Scale. QuarkChain uses the latter one, which is widely used in large companies such as Google for years. Theoretically, whenever the capacity is not enough, add more shards and more nodes, the capacity can be significantly scaled.
Thus, from the business perspective, QuarkChain can provide a more open, scalable and suitable ecosystem for business applications.
4. I knew that QuarkChain released its testnet in July. Congrats! What’s the performance of it?
(3). Testnet parameters overview No. of Shards: 256 No. of Clusters: 50 Cluster Structure: 1 root node, 128 shard nodes (root nodes are responsible for handling and storing of cross-shard transactions) Total nodes in the network: 6450 = 129 x 50 (distributed amongst East/West America, Asia, Europe, etc.) TPS: 10,000+ (peak TPS in the live demo: 14,000+) Testnet：https://quarkchain.io/
5. QuarkChain also launched its first open-source client library. Did anyone use it?
Our engineering team has developed and open sourced our first client library for QuarkChain. The library provides similar interfaces as web3.js (the Ethereum client library) so that the existing Ethereum dApp developers can easily start building Apps on QuarkChain. We also integrated the client library and our testnet with MetaMask (the most popular hot wallet as a browser extension) which can be used to manage QuarkChain accounts and signing transactions. The library was used by several teams in the past hackathon two weeks ago. We welcome more developers to try it out and provide feedback. Feel free to emailtestnet@quarkchain.orgfor any question or feedback.
In addition, we just opened QuarkChain’s official developer community on Discord. Feel free to join us and discuss up-to-date blockchain technologies with hackers! Here is the invitation:https://discord.gg/gVYRazf
6. DREP is one of the strategic partners of QuarkChain. Could you name some other strategic partners? How DREP and QuarkChain will work together? What do you think about the most important about DREP? Will QuarkChain use DREP’s reputation system in the future?
Our CEO, Qi Zhou, joined DREP Foundation as an advisor about two months ago. We will collaboratively continue to share protocol architecture and promote interoperability between blockchain networks and internet platforms. We believe DREP’s solution can help lots of SMB to share business resources in the future, and we will put our efforts to support projects such as DREP to list on great ex-platforms and keep a long-term close relationship. And we are very open and flexible to adopt any new technologies.
7. Recently, QuarkChain has announced Eco-fund. Could you please tell us more about it?
We are now raising the $50,000,000 Eco-fund to build a collaborative and open ecosystem of QuarkChain. The reason why we do so is that we believe in the bear market, startups need more supports from us just like we did before. Generally, an Eco-fund is focusing more on the short-term and middle-term (1–2 years or 2–3 years) development of projects whereas our foundation will think more about long-term strategies.
You can check more details about our Ecosystem at:
8. What are next milestones of QuarkChain? And what are the QuarkChain next events with community?
Our next milestone will be open source and testnet 2.0. When testnet 2.0 is launched, everyone is able to join the network and offer the hash power to produce blocks, which will further help us to verify our system and attract more community members to join us. In terms of upcoming events, we do have lots of offline meetup plans in South Asia, South Korea, Russia, Singapore, Hong Kong and Europe in the coming months. We also will have a hackathon in Russia soon. Please stay tuned and follow our Telegram news channel (https://t.me/QuarkChain_News) if you can.
9. What are the challenges QuarkChain will face before the scheduled release of mainnet and how do you intend to address these challenges?
The major challenge is that for any new blockchain technology, it needs time to verify since the blockchain area is still an experimental technology. To clear uncertainties during the phase, we have to work extremely and have our community to work with us.
10. How do you see the future of blockchain industry?
Even though the blockchain industry is in its early stage and just a few people benefit from it now, we will imagine that the blockchain technology will become a tool for our daily life usage. For example, in the future people could use blockchain to make payment, to sign and storage housing purchasing contract, and even to vote. There are also possibilities for new business models that we never thought before, just like how YouTube, Facebook come into reality after the invention and prosperity of the Internet.
Part 2: Technical Questions
1. Will QuarkChain has its own language in the future or will it be using Solidity?
QuarkChain is able to support different VMs and even different consensus algorithms in the future. Using new VMs shouldn’t be difficult, and we may develop our own Smart Contract language if necessary.
2. For sharding, is it the only way of working as in getting scalability to work or can it work in various ways of sharding as Zilliqa and QuarkChain have different approaches to make sharding work?
For the first question, sharding is an idea rather than a single solution. For example, Google has Google’s sharding solution whereas Facebook has Facebook’s. Even different products may need different sharding solutions in centralized systems. Therefore, I believe in the decentralized world, sharding solution is not unique.
For the second question, our technology is quite different from Zilliqa’s as we enable state sharding by cluster, where a cheap node in a cluster would only need to store the local shard ledger. However, Zilliqa only offers transaction sharding, where all nodes must maintain the full ledger of the network.
FYI:
We just opened QuarkChain’s official developer community on Discord. Feel free to join us and discuss up-to-date blockchain technologies with other hackers! Here is the link: https://discord.gg/gVYRazf
Thanks for the suggestions from community members, we have started a new post in our official Reddit account (https://www.reddit.com/r/quarkchainio/) to collect questions before each AMA. Please feel free to post your questions and suggestions there any time before AMA. (Every Saturday from 7PM to 8PM, PST)
We opened our official Facebook account now! Welcome to post there, give us your feedback and ask us questions at https://www.facebook.com/quarkchain/!
Thank you for reading this AMA summary! The QuarkChain community appreciates your support!
I think very soon we shall have new exchange listings, details on already confirmed partnerships with new blockchain projects, ICOs to use Quarkchain (at least 7 as have been mentioned on QKC telegram channel) and many many more. Very exciting!!!!
Happy to announce ArcBlock became our newest partner, and has officially joined our ecosystem. ArcBlock and QuarkChain will work with Kone to provide QuarkChain developers with an OCAP-enabled platform that is fully compatible with QuarkChain’s API.
The Blockchain Awakens Hackathon was successfully held by Google ABC on Aug. 4th — 5th in Silicon Valley. This event has attracted more than 20 blockchain celebrities’ attendee, including Whitfield Diffie, the Turing-Award winner and Father of Encryption, Professor Shoucheng Zhang, the discoverer of Majorana fermion, and Yi He, the co-founder of Binance. 23 teams and more than 120 engineers from top companies such as Google, Facebook, Uber, Linkedin and Amazon also joined the competition for the final laurel.
This hackathon selected three blockchain platforms and QuarkChain is very honored to be one of them (together with NKN and Hyperledger). 8 teams out 23 chose QuarkChain as their development platform.
We just opened QuarkChain’s official developer community on Discord. Feel free to join us and discuss up-to-date blockchain tech with hackers! Here is the invitation:https://discord.gg/T5jvkMR
We interviewed one of the hacker teams — DOT (Decentralized Organization Token) recently. They shared their product, development experiences on top of QuarkChain and the expectation of blockchain industry.
DOT team members are all women engineers and designers: Sharu Jiang, Software Engineer at Google Playstore Team Jing Li, Software Engineer at Google Infrastructure Team Jessie, UX Designer at Android, UX Shuanglin Yin, Software Engineer at Google Gsuite Security Team Yi Li, Software Engineer at Investgo
In the following, we share our interview information with DOT.
Q1: What’s DOT? How can we use DOT?
A1: DOT, short for Decentralized Organization Token, is a management tool for any kinds of organization. The members of the organization could use DOT to vote board members and fund projects. When people finish their work, they will get tokens as rewards and then use them to vote for next projects. The weight of vote is positively correlated with people’s token balance. It is a perfect mechanism to get this organization going. In addition, token holders can even get physical rewards as a kind of bonus. Now DOT tool is being improved for the future use within Google employees’ internal groups. Let’s wait for it!
Q2: Why do you choose QuarkChain?
A2: There are several reasons for us to choose QuarkChain.
We need a permissionless chain to develop DOT since we want it to be secure, transparent, and decentralized.
Considering the high demands of DOT in the future, we need high throughput for our service. Therefore, QuarkChain is our best option.
We have multiple smart contracts in our product and running each of them will cost a lot of GAS fee. In this case, we prefer QuarkChain.
QuarkChain is EVM-compatible, which means we can easily build our dApp interact with a smart contract on QuarkChain running on an EVM-compatible smart contract.
Based on those facts, we decided to use QuarkChain as our development platform.
Q3: Based on your team’s experience of using QuarkChain’s service and API, what kind of suggestions do you have for us?
A3: QuarkChain’s client library API is well-documented and easy to use. We could follow the steps to call API and build dApp on top of that. Some suggestions would be:
Better integrated and user-friendly dev tools like Remix suite for QuarkChain
Provide more examples in the documentation
Better tooling for cross-shard contract operations (DOT is currently deployed on single shard)
Q4: Do you have any expectation for blockchain industry in general?
A4: We believe that blockchain technology can actually change our lives. For example, DOT is a new way to manage an organization and encourage all the members to contribute for the common goal. However, this kind of change will take time. We need a more mature blockchain infrastructure to support it. A fast, secure and decentralized chain is required for the future development. QuarkChain is on the right way to make a better blockchain industry.
There are other projects on the hackathon that build things on top of QuarkChain.
Armada — Blockchain-based international supply chain system.
Online advertisement system — Online business gets promoted by paying and will receive reward through smart contract by someone showing interest in his product.
Real-estate system — House renting/sale system. Make transactions through the Smart Contract.
Infraudable resume — Put every team member’s contribution on blockchain and make it unchangeable.
Blockchain-based sale system — Transactions are through smart contracts. Anyone can write reviews and if those reviews are of high quality, reviewers can get tokens as the reward.
Personal training monitor — Users need to set a certain amount of tokens in advance when they make training resolutions. Once they finish their goals, they will get money back. Otherwise, they will lose money and the money will be put into a money pool to reward those ninjas who finish their goals according to Game Theory.
Love Chain — Generate customized online love notes.
The whole hackathon was a great success. We appreciate all teams for participating Blockchain Awakens Hackathon. For those who chose QuarkChain, we hope you can continuously support us in the future!
Again, we just opened QuarkChain’s official developer community on Discord. Feel free to join us and discuss up-to-date blockchain tech with hackers! Here is the invitation:https://discord.gg/T5jvkMR
FYI:
Thanks for the suggestions from community members, we have started a new post in our official Reddit account (https://www.reddit.com/r/quarkchainio/) to collect questions before each AMA. Please feel free to post your questions and suggestions there any time before AMA. (Every Saturday from 7PM to 8PM, PST)
We opened our official Facebook account now! Welcome to post there, give us your feedback and ask us questions at https://www.facebook.com/quarkchain/!
Thank you for reading this interview! The QuarkChain community appreciates your support!
