Skip to main content
Discuss a PartnershipJoin

HACK+2023 Grand Prize: Building a Blood-Donation Support DApp on the Symbol Blockchain

2025-10-15
TTomohiro Iida
Web3BlockchainHackathonsDAppsAchievements
HACK+2023 Grand Prize: Building a Blood-Donation Support DApp on the Symbol Blockchain

HACK+2023 Grand Prize

A team made up of Miyako de IT community members won the Grand Prize at HACK+2023, a Symbol blockchain hackathon.

Project overview: a blood-donation support DApp

The problem

Japan's blood-donation rate has been declining year by year, and the decline in donations among younger people has become a particularly serious social issue.

The solution

The team developed a DApp, or decentralized application, that uses the Symbol blockchain to provide incentives for donating blood.

Technology stack

  • Blockchain: Symbol, the successor to NEM
  • Frontend: React / TypeScript
  • Smart contract: Symbol mosaic and transfer transactions

The chemistry a community creates

The project began when members who met at a Miyako de IT co-working study session talked about building something together.

  • Diverse skills: Frontend, blockchain, and UI/UX specialists formed the team
  • Regular face-to-face contact: Co-working study sessions became a place for development meetings once or twice a month
  • Kyoto's environment: Focused work at a temple improved the project's quality

Development through Miyako de IT

At Miyako de IT, co-working study sessions are not only places where everyone works on their own tasks. Collaborative projects like this one also emerge. Connections among IT engineers create things that no individual could make alone—this is the power of community.

If you are interested, please come to a Miyako de IT event.

Source data

The figures cited in this article are based on primary data in the Miyako de IT annual statistics report. It publishes yearly event counts, venue distribution, and event-format data.