JEDA (Japan EOS Developer Association)

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JEDA (Japan EOS Developer Association) is an EOS block producer ​ candidate based in Tokyo, Japan ​. [2]


Public Presence

Website URL: [3]

Twitter ​: [4]

Instagram ​: [5]

Line: [6]

Facebook ​: [7]

ID on Steemit

Steemit ​ ID: @eosjapan [8]

Official Name: JEDA Block Producer

Location of Company Headquarters: Tokyo, Japan

Expected Location of Servers: Tokyo, Japan

Types of Servers: Cloud server at early phase; will consider and try bare metal after for backup nodes

Current Employee List

Tatsunori Hara, Co-founder

Ph.D. of Tokyo University ​ Dept. of Precision Engineering, Graduate School of Engineering.

During his Ph.D., the candidate developed a concrete design system and its software responding to the concept of service engineering proposed by Arai, Shimomura, and Ueda in CIRP(Collége International pour la Recherche en Productique.

The system and software were presented in CIRP GA, LCE, MS, and IPS2 conferences. He received the prize A) due to his dissertation.
Research into Artifacts, Center for Engineering (RACE), He is now Associate Professor of The University of Tokyo service design, service engineering, servitization, skill analysis of human interactions. [2]

Hiroshi Ukai, Co-founder

Co-founder of JEDA and angel investor ​, has been focusing on investing in the blockchain industry.

Over 20 years of developing experience of mobile payment. In early 2003, he led his company join into Japan ​ first digital currency encrypted IC Felica’s development together with Sony ​, later used in Suica ​ card (a prepaid e-money card for moving around and shopping in Japan). [2]

Masanori Mitani, Co-founder

Mitani has over 20 years experience in securities ​ and banking. Worked as Managing Director for First Interstate Bank Tokyo Branch, Securities Asia, ABN AMRO ​ Securities (Japan) Limited. After that, he started his company for business consulting and IPO ​ service.


Graduated from University of Louisville Kentucky USA ​, Bachelor of Science ​ Major in Finance ​ occupations. [2]

David Zhang, Co-founder

Founder and CEO ​ of BTCBOX the licensed cryptocurrency ​ exchange in Japan. David has more than 10 years experience with startups especially in blockchain and distributed technologies. Currently he joins JEDA as a co-founder. [2]

Jacky Zhang, Developer

Jacky is a senior full-stack developer ​ with more than 12 years of developing experience and blockchain technology fanatics. He was lead developer and blockchain research engineer of a cryptocurrency exchange in Japan.
Now he joined JEDA for EOS related works. [2]

Technical Specifications

AWS EC2 m4.4xlarge
512GB SSD [2]

Scaling Plan

Move to bare metal server gradually.
Upgrade up to two servers with 2-4 TB RAM and 100G bandwidth support.
One for production PB, one for backup. [2]

Community Projects

JEDA is committed to promoting EOS in Japan and organize the developer to build the EOS ecosystem. [2]

As development is an important cycle of EOS ecosystem, JEDA will strongly support the financial side for the developer who has an ability to develop DAPP projects more smoothly. [2]

JEDA is also going to conduct educational activities for people to increase knowledge and skill improvement for EOS throughout the country by holding technician meet-ups and public meet-ups. [2]

Telegram + Testnet

Telegram: @eosjapan [9]

JEDA has launched its own "eosjapan" testnet:

For now there is one BP called "goldfish" and will include more BP up to 21 nodes.

Block Producer Roadmap

2018 Q2 (On-going)

Accomplished legal qualifications related to the registration and certification of Japan EOS Developer Association. (Done)

Accomplished the renovation of office space.

Accomplish renovation of the off-line club, road show field. (On-going)

Held the VERY 1st EOS meet up in Tokyo University, Tokyo, Japan (Done) [10]

2018 Q3

EOS related tools, start EOS wallet project.

Established JEDA developer club, regularly hold the training and sharing event. (Has been held in advance)

Recruit more members to support the development of EOS tools and wallet projects.

Server upgrade. [10]

2018 Q4

Continuously provide the support and service for DAPP developer community in Japan.

Holding the EOS developer meet up.

Promote the listing of EOS on the Japan licensed Cryptocurrency Exchanges. [10]

Financial Plan

DAPP support 35%
Developer training, technical support 20%
BP server and related network service cost 25%
Ad promoting 15%
Others 5% [10]

Position on Dividends

As JEDA is an NPO ( non-profit organization ​), it can NOT provide any form of dividend or equity incentive for supporters. JEDA hopes its members and supporters can purely make the connection to each other with NO profit interest. [11]

See Also

List of EOS Block Producer Candidates

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