Nebulas Weekly Report #15

Welcome to the #15 of Nebulas Weekly Report! Delivering developments of Nebulas project. Nebulas Weekly Report is maintained by the Nebulas team. Please send feedback to, or @nebulasio on Twitter.

LAST WEEK’S News and Reports

◢Nebulas’ Silicon Valley Meetup

Nebulas held a meetup with 500 Startups at San Francisco Nasdaq Center on January 30. Nebulas founder Hitters Xu, advisors Edith Yeung and Chris McCann illustrated Nebulas’ project, the blockchain ecosystem in Asia, and the current trends in blockchain. They had in-depth conversations with enthusiastic community members after the panel.

Nebulas Advisors Edith Yeung, Founder Hitters Xu and Advisor Chris McCann

The popularity of this meetup is beyond the team’s expectation. More than 250 audience attended the meetup, with more than 1800 people watching live streamings and playbacks on YouTube channel.

A sold-out crowd
People mingling outside after the event

Besides, Nebulas gave out official T-shirts, hoodies, posters and stickers for the first time, which were very popular.

◢Nebulas’ Writing Contest Kicked off

Nebulas decided to host a writing contest about blockchain starting from 11 a.m. January 31 to 11 a.m. February 19 EST. Winners get NAS and Nebulas hoodies as prizes.

Participants can write in both English and Chinese. The participants first need to publish an article on Medium about their story with blockchain and the reason they chose Nebulas. Then they need to share the link on Twitter and tag @nebulasio. The final score equals to 10% Medium claps + number of comments. The writers with the top three scores win the game.

Nebulas comes from the community and services in the community. We will hold more similar events in the future to involve more community members in the development of Nebulas ecosystem.

◢Nebulas Released Its #2 AMA Video

Nebulas published its second AMA video in which Nebulas CTO Robin Zhong illustrated on Nebulas Rank, Nebulas Force, the relationship between Nebulas Testnet and community, as well as the roadmap of Nebulas. Nebulas will release more AMA videos in the future.

LAST WEEK’S Top Commits

Last week, we still focused on enhancing the stability and performance of Nebulas. We conducted a series of stress tests, including stress tests for normal transactions and smart contract. Through the stress tests we found some performance bottlenecks in our system. We tried to improve the performance of executing transactions in parallel. And we also tried to use mysql instead of leveldb to store data. What’s more, the nebulas explorer of our testnet is ready. And our wallet of Nebulas are under development.

Summary the last week is as follows,


  • Tried to execute transactions in parallel.
  • Used mysql instead of leveldb in feature/mysql branch.
  • Fixed some bugs.


  • Added stress test for send transaction and smart contract.
  • Troubleshooted memory leaks.

Learn more about Nebulas:

Official website:

Twitter: @nebulasio