Public-goods protocol team
Levarac Foundation builds open public goods for turning human actions and facts into verifiable information that can travel across organizations.
Make human actions and facts into trustworthy information without relying on trusted third parties.
Create a state where verifiable records of human actions and facts are used as decision material across organizations.
Many valuable opportunities depend on claims about what people did: who attended, who contributed, who was present, who completed a task, and who earned the right to receive something scarce.
Today, those claims are usually trapped inside private platforms, trusted operators, QR-code checkpoints, manual review, or records that cannot be verified later. As incentives become more valuable, the cost of excluding fraud rises. Smaller communities, local organizers, and independent projects often cannot afford that cost.
Levarac starts from a simple premise: human action should be able to become trustworthy information without handing authority to a single gatekeeper.
Our current focus is attendance proof: a way to turn real-world participation, co-presence, and contribution into verifiable records.
The initial use case is fair distribution of high-value benefits. When rewards, access, or recognition are valuable enough to attract fraud, organizers need evidence stronger than a shared QR code and lighter than full identity checks.
Barnard is an open-source proximity-sensing library developed for this work. It uses privacy-preserving, rotating identifiers and mutual observation between devices to make real-world presence more costly to forge.
We build for public use: open protocols, auditable implementations, and reusable components that other organizers, communities, and developers can inspect, adopt, and extend.
Levarac is "caravel" in reverse. The name points to a reversal in how trust is created: not from a central authority downward, but from human actions, mutual observations, and verifiable records upward.
There is also a small historical trace in the name. The original 2018 code name for this line of work was Galleon. When the team looked for a lighter flag for a public-goods foundation, the image moved from a galleon to a caravel: a smaller vessel for finding a route through uncertain waters. Reversing caravel gave us Levarac.
Founder and technical lead. Kenichi is a product builder with deep experience taking consumer internet services from prototype to long-term operation. He founded zukan.com Inc. in 2013 and has led the launch and maintenance of dozens of user-facing products.
He was selected for Japan's government-backed Mitou IT program in 2012 and certified as a Super Creator. At Levarac Foundation, he leads product direction, protocol implementation, field pilots, and the translation of trust infrastructure into usable experiences.
Protocol design lead. Yoshinobu has worked across the blockchain and Web3 ecosystem since 2016, contributing as both a business developer and engineer to more than 30 projects.
His work spans protocol design, smart contracts, ecosystem development, and academic research. In 2021, he received a Best Paper Award at an international conference for work on a public-blockchain supply-chain system. At Levarac Foundation, he leads protocol architecture, verifiable credential design, blockchain integration, and technical communication.
Product UX lead and mobile developer. Koya works at the intersection of engineering, interface design, and early-stage product development. He has helped launch multiple companies and contributed to more than 12 consumer-facing products.
Since 2019, he has served as executive officer and CTO at bajji, leading products including work in the Web3 field. His work has received multiple awards in Japan and abroad, including a Good Design Award. At Levarac Foundation, he leads product UX, mobile development, demo quality, SDK interfaces, and adoption support.
We are preparing early implementations, protocol experiments, and field pilots for attendance proof and fair benefit distribution.