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IOHK is a blockchain research and engineering company, also known as Input Output, founded in 2015 by Charles Hoskinson.

Last updated September 2, 2026

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Overview

IOHK, also known as Input Output, is a blockchain research and engineering company. It was founded in 2015 by Charles Hoskinson. The company is dedicated to building a sustainable Web3 ecosystem, focusing on scalability, security, and real-world adoption through pioneering research and engineering. It is known for developing Cardano, a research-backed layer 1 blockchain, and Midnight, a fourth-generation privacy blockchain.

History

IOHK, also known as Input Output, was founded in 2015 by Charles Hoskinson. It is a blockchain infrastructure and research engineering firm dedicated to building a sustainable Web3 ecosystem. The company focuses on scalability, security, and real-world adoption through pioneering research and cutting-edge engineering. It has developed Cardano, the first blockchain rooted in peer-reviewed science, and Midnight, a fourth-generation blockchain rooted in programmable privacy.

Products and positioning

  • Cardano

    Research-backed layer 1 blockchain

  • Midnight

    Fourth-generation privacy blockchain

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