What is Cartesi (CTSI)?

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The Blockchain OS is a decentralised Layer-2 infrastructure that supports Linux and mainstream software components. It allows developers to build decentralised logic with Linux and standard programming environments preserving the decentralisation and security of blockchains. That means moving beyond Solidity and coding smart contracts with rich software tools, libraries, and services developers are used to. All while, free from scalability limits.

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The Blockchain OS was founded to bridge the best of two worlds: intense computational jobs and independence of central authorities or middle men, as seen in the decentralised world of tomorrow.


Erick de Moura
Erick de Moura
Co-Founder & CEO

After more than twenty years of software engineering experience at companies like Tecgraf, WiNGS, M4U, WebRadar, and Arizona Bay, Erick co-founded Cartesi in January 2018, joining as their Chief Executive Officer.

Colin Steil
Colin Steil
Co-Founder & COO

Colin has a long history of management, working for companies like NAIT, TD, Canada China Business Council, SOSV. Before co-founding Cartesi in January 2018, he served as the global partnerships manager for MOX. He is currently working as the Cartesi Chief Operating Officer.

Diego Nehab
Diego Nehab
Co-Founder & CTO

With a Ph.D from Princeton in Computer Graphics, Diego has worked as a professor at IMPA, the Institute for Pure and Applied Mathematics, for more than 12 years. He co-founded Cartesi in January 2018, joining as their Chief Technology Officer, and has held both jobs ever since.

Augusto Teixeira
Augusto Teixeira
Co-Founder & Chief Scientific Officer

After receiving his Doctorate in Philosophy - PhD, Mathematics, Augusto became a postdoctoral researcher for École normale supérieure. From there, he joined IMPA as a professor, a role he has held for more than ten years. In January 2018, he co-founded Cartesi as their Chief Scientific Officer, a role he continues to hold to this day.

Danilo Tuler
Danilo Tuler
Head of Engineering

With more than twenty years experience as a software engineer, and twelve years as a cloud architect, Danilo has worked for a number of companies over his career, including ingresso.com, B2W Digital, Site Blindado S.A. In August 2019, he joined Cartesi as their Head of Engineering.

Bruno Maia
Bruno Maia
Head Of Business Development

Bruno worked as the Qualcomm Senior Staff Engineer for a period of five years in the early 2010s. Since 2018, he has switched to a blockchain focus, becoming the Pre-Sales Director for Bitfury, and finally joining Cartesi as their Head of Business Development in October of 2020.

To learn more about the team, read Cartesi’s whitepaper.

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CTSI Use Cases


At Travala.com, we offer more than 3,000,000 travel products in over 230 countries available for purchase with CTSI. Plus, you’ll receive a 2% giveback in AVA, Travala.com’s native cryptocurrency, on every accommodation booking.

Travala.com’s intuitive booking experience is designed to be familiar and simple to navigate. Travellers simply choose their desired travel product(s), enter their details, and select from the variety of available payment options, including traditional credit and debit cards, CTSI, and 90+ other cryptocurrencies.


Cartesi applications will be able to read and do complex calculations involving data from multiple sources. This will help interoperability between blockchains and services such as future and insurance markets.


Cartesi will unleash vast new possibilities for blockchain games. Developers will be able to use traditional tools and libraries that can be compiled for Linux. Additionally, game state processing will be free from the computational limits and high fees of blockchains without the need to sacrifice decentralisation.


Outsourced computation will allow for millions of users to lend their idle computing power. This will benefit scientific research, 3D rendering, video transcoding and many other computationally intensive tasks in a trustless way, without reputation systems.

How to Pay with CTSI

Visit Travala.com and search for a hotel, home, flight, or other travel product by entering your destination and dates.

Select your desired choice from the available options.

Enter the required traveller details.

Select Crypto as your payment method, then select CTSI.

Click Complete Reservation. In your CTSI Wallet, input the generated address by scanning the provided QR code or by copying the text. Ensure that the exact CTSI amount is entered and send the payment.

Click Payment sent. Your transaction will be processed and you will receive a confirmation email once your voucher or e-ticket is available.

Buy, Sell and Trade CTSI

Exchanges where you can buy, sell and trade CTSI:

Store CTSI

Store your CTSI securely with the following wallets:

Are you an exchange or wallet provider that supports CTSI? Contact us to have your platform added to the lists above.


Does Cartesi Have Low Fees?

Cartesi can be used to circumvent high Gas fees. With competitor fees at record-highs due to network congestion, Cartesi users enjoy low transaction costs as large portions of transactions can be conducted off-chain. The Linux Virtual Machine enables developers to take the most expensive computational requirements of their applications and shift them to a more affordable sidechain network. This data is then sent back to the blockchain to ensure full consensus is reached.

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