Nebulas Weekly Report #5 Nov 20th, 2017

Welcome to the #5 of Nebulas Weekly Report, delivering developments in Nebulas projects. 
Nebulas Weekly Report is maintained by Nebulas Developer Team.
Please send feedback to, or @nebulasio on Twitter.

THIS WEEK’S News and Reports

Nebulas founder Hitters Xu shared Nebulas’ idea and technology at Singapore FinTech Festival and discussed the future of FinTech with the other elites.

Also, Nebulas completed its first New York tour, communicating with lawyers, VCs, and fellow blockchain entrepreneurs along the trip.

Singapore FinTech Festival, Nov 13 ~ Nov 17

With Nebulas sponsoring Singapore FinTech Festival, CEO Hitters Xu was present on-site, delivering a 50-minutes speech on his personal blockchain experience and about Nebulas.

Singapore FinTech Festival was organized by the Monetary Authority of Singapore (MAS), in partnership with The Association of Banks in Singapore (ABS) and collaboration with SingEx Holdings. It’s world’s largest FinTech Festival. This year, there were more than 25,000 participants from over 100 countries, such as Ethereum founder Vitalik Buterin, Plug and Play CEO Wesley Harjono.

Nebulas founder Hitters Xu @ Singapore FinTech Festival

Title “From the First Public Blockchain in China to Nebulas”. He elaborated on his 6-years blockchain experience in China and Nebulas’ innovative idea. During which, Nebulas was debuted for the first time as “Can’t be evil” at a global summit. We provide an open-source search framework for blockchain world. The search engine based on Nebulas search framework will have three features: open-source algorithms, verifiable computing, and distributed data store. Compared with Google’s “Don’t be evil” is a kind of self-discipline, Nebulas can’t be evil because of these innovative tech features.

As one leader of China’s blockchain technology, Hitters Xu also looked into the future of China’s blockchain.

Hitters chatted with the audience

Hitters Xu and Hannah Yang, Nebulas Project Coordinator, also participated in an “Inclusive Blockchain Conference” hosted by Singapore University of Social Science (SUSS) during the week of Singapore FinTech Festival. Alongside other panelists, they discussed on the topics of “Blockchain and Inclusion” and “ICO Regulation and Investment”.

Other panelists who were present were Heatherm Huang (Measure), Addy Crezee (BlockShow by CoinTelegraph), Dušan Stojanović (True Global Ventures), and VCs, blockchain founders, lawyers from US, Singapore, and other countries.

Hitters Xu @ Inclusive Blockchain Conference

Touching on the future of blockchain, blockchain for finance, Hitters Xu mentioned that blockchain should not be limited to a regional usage, but instead blockchain organizations and companies should be standardized and on a global scale. In order to grow the business, one will require a comprehensive view. Don’t be afraid of the global regulations, but instead, focus on solving the actual problem in the traditional finance marketing through technology.

New York Tour: building Community, Establishing Relationships and Uncovering Potential Blockchain Projects

Between Nov 6 to Nov 11, the Nebulas team completed its first tour in New York, conducting not only a meetup Columbia University, but also meetings with law firms, VCs, Banks and community parties.

With Nebulas actively seeking for ways to protect everyone’s benefits, communication was established with the top 5 law firms who provide legal services regarding digital assets and blockchain projects in the U.S., such as Perkins Coie and Cooley for potential solutions.

And we also communicated with VCs and Banks such as UBS, Merrill Lynch, JPMorgan Chase Bank, Deloitte, McKinsey, Fortress, Credit Suisse, ConsenSys, Plug & Play.

This tour concluded with Nebulas establishing initial cooperation with some of these companies and we look forward to having more of such tours in the near future.

Nebulas team with New York friends

Reaching out as Nebulas Community Development Fund, the Nebulas team also got in touch with outstanding blockchain teams in New York such as Alphapoint and Data Wallet, whom might be interested in an investment opportunities.

THIS WEEK’S Top Commits

In the past week, we focused on improving stability and functionality in v0.4.0.

We added execution limits mechanism into the V8 engine, currently we have two types of limits: one is the executed instruction based limits, used for calculating Gas consumption, terminated when Gas drain; the other is CPU/Memory resources based limits, used to prevent massive cpu/memory resources consumption to the host. We also implemented more APIs for RPC and REPL, let developers interact with Nebulas more easily. Besides that, we included Metrics Counter into Nebulas, let system admin or operators can use Grafana liked tools to monitor status of Nebulas.


  • Added executed instruction based limits;
  • Added CPU/Memory resource based limits;
  • Added more JavaScript libs in V8, including: bignumber for balance, Blockchain for interact with blockchain data and/or functions, assert.js for testing.


  • Added Gas and GasPrice fields in Transaction;
  • Implemented Gas calculation mechanism in Transaction based on NVM Execution limits;
  • Improved stability;
  • Added metrics counters, including block height, blockchain tails.


  • Added HTTP-RPC interface for management APIs;


  • Improved stability of REPL;


  • Started the development of PoD algorithm in a new feature branch.

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