Intmax
A stateless private zkRollup payment protocol on Ethereum
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About Intmax
Intmax's key milestones include the 2023 publication of the Intmax2 whitepaper, introducing a stateless zkRollup design that reduces per-transaction data availability costs to 4-6 bytes through client-side proof generation and storage. This architectural shift, moving computation off-chain while maintaining Ethereum security, represents a fundamental departure from traditional rollups.
The July 2025 mainnet launch marked the first practical realization of Plasma's original vision, featuring privacy mining incentives and trustless payment channels. This demonstrated that stateless architectures can achieve production viability.
A subsequent security incident in July 2025, involving a deployment vulnerability rather than a code flaw, led to complete contract migration without user fund losses. The incident validated the protocol's resilience through formal verification, third-party audits, and bug bounty programs, establishing operational maturity for handling real-world challenges.
Leona Hioki (Founder): Web3 entrepreneur, previously led blockchain initiatives.
Kazuki Kasahara (VP of Engineering): Expert in zkRollup and protocol engineering, with a background in cryptography and distributed systems.
Mai Fujimoto (Co-Founder): Known as "Miss Bitcoin," a prominent crypto advocate and advisor since 2011, active in community building and industry education.
Intmax's recent team change: Sergei Medvedev, who served as Chief Marketing Officer (CMO) since January 2024, departed in May 2026. His departure marks a significant shift in the project's marketing leadership. No new hires were reported during this period.