| CARVIEW |
Cascading
disruption
disruption
Input Output is the world's leading blockchain research and engineering company
Engineered for real-life application
Turning ideas into lasting ventures
The Venture Studio supports founders at every stage, from idea to spinout, with research, governance, incentives, and systems design. Whether you are building new infrastructure, an application, or a service, our goal is to help you launch with clarity, discipline, and long-term viability.
Ecosystems
Our ventures are not isolated products. Each is part of a cohesive ecosystem, connected through shared infrastructure, research, and governance. Together, they form the building blocks of a decentralized future.
Products
Input Output provides the science-first platforms and tooling – from robust wallets to advanced programming languages – that enable teams to successfully build and scale for the future.
Lace
Light wallet platform
Bitcoin DeFi
Bitcoin-Cardano bridge
RealFi
Finance platform (DeFi)
Catalyst
Project voting & funding
Identus
Decentralized identity
Djed
Stablecoin
Blockfrost
Cardano API platform
Quantum Hosky
4D gamescape/partner chain
A new blueprint for Web3
The greatest challenge isn’t only technical design, it’s architecting human coordination at scale. We are rebuilding the fundamental systems of human collaboration, economics, and value creation from first principles.
Tamara Haasen, PresidentWhere others see broken systems, we see opportunity.
We are rethinking how the world connects, transacts, and collaborates. Built on strong science and rigorous engineering, we create technologies that restore trust, and design systems meant to last.
Research
Input Output Research is our dedicated R&D division, pioneering foundational and applied research in cryptography, distributed systems, and formal methods. For more than a decade, our scientists and collaborators have pushed the boundaries of cryptography, consensus, and decentralized governance.
Input Output is rooted in academic rigor and peer-reviewed research.
Read the latest work shaping the future of blockchain, artificial intelligence, and other frontier technologies.
Explore ideas in motion through talks, lectures, and interviews.
Featured research
- #settlement
Adaptively Secure Fast Settlement with Dynamic Participation and Self-Healing
December 01 2025 — Christian Badertscher, Sandro Coretti, Peter Gaži, Prof Aggelos Kiayias, Prof Alexander Russell
- #game-theory
One-dimensional vs. Multi-dimensional Pricing in Blockchain Protocols
December 01 2025 — Prof Aggelos Kiayias, Prof Elias Koutsoupias, Giorgos Panagiotakos, Kyriaki Zioga
- #grinding
Taming Iterative Grinding Attacks on Blockchain Beacons
December 01 2025 — Peter Gaži, Saad Quader, Prof Alexander Russell
- #universal composition
Universally Composable Transaction Order Fairness: Refined Definitions and Adaptive Security
December 01 2025 — Michele Ciampi, Prof Aggelos Kiayias, Yu Shen
At Input Output, we don't just support ventures. We open doors.
600+ people
50+ countries
At Input Output, we are united by curiosity and purpose. Wherever we are, we collaborate to build systems that empower individuals and strengthen communities worldwide.
News and events
- 12.22.2025Researchers and network operators: aligning Cardano’s long-term vision with on-chain realityBlog Post - Fergie Miller
- 12.19.2025Interchains: connecting Cardano to a multi-chain futureBlog Post - Fergie Miller
- 12.18.2025Leios monthly spotlight: November highlightsBlog Post - Emmanuel Ameh
- 12.16.2025UPLC 2025: building the future of Cardano’s programming languagesBlog Post - Ziyang Liu
- 12.10.2025Ouroboros Omega and Leios: building Cardano’s long-term consensusResearch Video - Fergie Miller
- 12.05.2025Input Output Global Rebrands to “Input Output,” Signalling Expansion Into Global Web3 and Frontier Technology InnovationPress Releases