hi
Info
Name: Hiroyuki Tachibana
ENS: tachibana.eth
Email: tachibana@hey.com / hiroism007@gmail.com / hiro@a42.io / hiro@a42x.co.jp
Twitter: https://twitter.com/7pastelblackcat
Linkedin: https://www.linkedin.com/in/hiroyuki-tachibana
Medium: https://hiroism007.medium.com/
Github: https://github.com/hiroism007/
Current Interest
ZK-SNARKs
AA
Projects
https://a42.co.jp - Playground
w3lock - NFT as the key of your houses - IoT x NFT
w3a.io Blockchain Auth module for IoT devices - Received Ethereum Foundation grant
MynaWallet - AA Wallet that works with Japanese government issued ID cards
Received Grants from Ethereum Foundation
PoC
zktokenproof - Proof of membership with zk-SNARKs
ecdsa.app - File signing and verification services with Elliptic Curve Digital Signature Algorithm
bulk wallet generator Bulk Ethereum wallet generator app
Research
/zero-knowledge-proof
Experience
Co-Founder, CEO - a42x Inc
Kanagawa, Japan
Jun 2023 -
Co-Founder, CEO - a42 Pte Ltd
Singapore
Jan 2022 -
Co-Founder, CEO - a42 Inc
Tokyo, Japan
Jan 2019 - Jun 2024
Software & Firmware Engineer (Nodejs, GCP, Firebase, AWS, React, ESP32)- Jigowats Inc
Tokyo, Japan
Jan 2019 - Dec 2021
Software Lead Engineer (GCP, Firebase, Golang, Nodejs)- GameWith
Tokyo, Japan
Oct 2018 - Dec 2018
Software Engineer - CyberAgent
Tokyo, Japan
Apr 2013 - Oct 2018
Senior Software Engineer (Java, AWS, GCP, React) - Craft Egg (subsidiary)
Staff Software Engineer (Nodejs, React, Vue) - qualiarts (subsidiary)
Software Engineer (Nodejs, GCP) - CyberAgent
Software Engineer Intern (Rails) - Pankaku
Tokyo, Japan
Apr 2010 - Mar 2013
Keio University the Faculty of Environment and Information Studies
Kanagawa, Tokyo, Japan
Apr 2009 - Mar 2013
Maibara High School
Wallet
Ethereum
tachibana.eth
0x199012076Ea09f92D8C30C494E94738CFF449f57
Bitcoin
bc1qz8ux08zq2h5ftq9pkvwf6tftpmtyppylmsx0fz
Contact
https://www.linkedin.com/in/hiroyuki-tachibana
hiroism007@gmail.com
tachibana@hey.com