Ultrasonic crypto payments. Your phone & pc hears the request. No QR codes, just sound waves.
react
jwcheon
GitHub ↗- Projects
- 1
- Winning projects
- 0
- Hackathons
- 1
- Active
- 2026
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Projects are linked from GitHub commits to each project's repo during its hackathon, so some may be missing or wrong. Prize money is each project's total, shared with teammates. Is this you?