Interviews, People of Blockchain, Technology

Exclusive Interview: Stephen Xu, Former Lead Developer for QTUM

Exclusive Interview: Stephen Xu, Former Lead Developer for QTUM

Cryptocurrencies and blockchain become more applicable every day as a solution to global inefficiencies – but much progress is yet to be made in this nascent industry. On May 17, 2018, Stephen Xu of QTUM shared his thoughts on the future outlook of blockchain integration and his plans to take on roles outside of Lead Developer in projects post-QTUM.

Stephen Xu, Veteran Developer and Leader in Blockchain Innovation

As a 2014 graduate of the University of Chinese Academy of Sciences, Stephen Xu went on to work for Microsoft and Chinese internet conglomerate, Tencent, as a game developer. He specialized in “in-game currency mechanics”– an early introduction to the dynamics of digital assets.

Stephen Xu, former Lead Developer for QTUM and Co-Founder of DREP Foundation

In 2017, Stephen left Tencent and joined Patrick Dai as Lead Developer for the QTUM Foundation where he began his work on the hybrid smart-contract platform for decentralized applications development (dApp) and established himself as an early expert in blockchain integration utility.

As blockchain technology continues to evolve, so too does Stephen’s interest in its maturing potential to directly impact users.

Xu has now taken on the role of Co-Founder of DREP Foundation, a decentralized reputation ecosystem comprised of a public chain, a reputation-based protocol and the tools needed for Internet platforms to leverage its power.

Primary Issues with Blockchain Today

With the growing competition between emerging smart contract platforms, it is evident that the process of development is far from its peak.

New blockchain operating systems seek to resolve issues with scalability and efficiency through innovative features such as sharding (or micro-chain segregation), cross-chain parallel operations, and native upgradeability. However, none have yet successfully proven a sustainable platform for dApp development.

Ex-Lead Developer for QTUM, Stephen Xu believes scalability is the primary issue surrounding current smart contract platforms.

Xu explains the current state of smart contract platforms and the issues they encounter here:

“The Bitcoin and Ethereum or other blockchain platforms currently, most of them face scalability problems. In the blockchain industry, scalability, decentralization and security – these three cannot work together. Some projects try to develop their own projects to get higher scalability but sacrifice decentralization, like DPOS. The greatest problem is in the technology itself.”

Though DPOS (delegated proof of stake) is popular for increasing TPS through a system of delegated “supernodes” rather than using several untrusted nodes to verify each transaction. This new consensus protocol is inherently more centralized than alternate mechanisms such as proof of work.

Imbalances to the platform prevent a sustainable ecosystem for dApps to exist and hence pose an obstacle for the future advancement of blockchain integration.

Xu further explains that the current state of blockchain usage is limited to the global ICO fervor and investment opportunities rather than actual applications of the technology:

“Currently, there are no real apps that can attract a lot of users to use it. Most of the users in the blockchain industry are only focused on investing… or participating in some ICO projects. I think this industry needs some real killer apps to accelerate the technology.“

Why Xu Left QTUM

Qtum
Qtum is a Chinese blockchain project that uses smart contracts and PoS 3.0.

Without qualms toward his previous workplace, Stephen asserted that QTUM is a project he was very proud to work on.

Leading the developer team to launch a testnet and mainnet within the first six months after ICO is one of his fondest memories that he will cherish as he moves on to other projects:

“QTUM is a very young blockchain platform. We started ICO last March, 2017 and three months later we released our testnet and three months later we released our mainnet, so it was very quick. Most blockchain projects deliver nothing, but we were a very high-efficiency team, so when we released our mainnet, I am very happy.”

However, Stephen felt he needed to return to his roots and sought a new way to reach users more directly than through a public chain platform:

“The reason I left QTUM is… I have talked to Patrick [Dai] many times about what we want to do or what I want to do and because I used to be a game developer, so I want to do something that is close to the users. I want to see some useful apps in this… I want to do it myself, that’s the reason I left QTUM to join DREP foundation to do this kind of platform to be closer to the users.”

Xu further elaborated on the primary differences between QTUM and direct dApp development projects:

“QTUM is a public chain like Ethereum, so for public chain itself… they are developing their technology for the developers, not directly to the users. You cannot use Ethereum directly, unless you can write smart contracts…. But if you are not a coder/developer, you cannot really use it. You just transfer it like a currency… If you develop an app, the users can really use it. The users can touch it.”

What’s Next? Intro to DREP Foundation

The ultimate solution of DREP is to unleash reputation value in interconnected ecosystem of Internet platforms

Founded in 2017, DREP Foundation seeks to unleash the untapped value of Internet reputation and push forward a more engaging, high-quality, interconnected Internet community, benefiting both platforms and their users.

DREP seeks to achieve this through a suite of functions including identity verification, reputation exchange hub, and voting systems/mapping.

Stephen Xu summarizes the focus of DREP here:

“DREP tokenizes the user’s contribution to quantify the user’s reputation value then we use that reputation value to give more use-case, for example economy incentive.”

DREP is comprised of a core team of diverse developers from a range of backgrounds and plans to launch their Initial Exchange Offering (IEO) in early June of this year.

Stephen Xu will be assuming the role of Co-Founder on the DREP team and will use his experience in blockchain to guide their efforts in developing a new “infrastructure to accelerate internet platforms’ user growth and traffic monetization.”

Cover Photo by Neil Godding on Unsplash

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Jonathan Kim Author

Jonathan Kim

Jonathan Kim is a University of Washington student of Finance and cryptocurrency investor with a deep interest in the emerging industry of blockchain applications and cryptocurrency trading. Involved with a recently launched ICO, Jonathan is familiar with the internal process of crowdsale funding and the workings of a blockchain startup. His past experiences involve publishing original daily content for blockchain startups and trading cryptocurrency using technical analysis principles.

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