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Plutus: Writing reliable smart contracts

NOTICE: This book is out of date. It shows PLUTUS as it was in 2019. We are currently working in the new edition that depicts the latest development of the PLUTUS programming language.

Alejandro Garcia Fdz, Lars Brünjes, and Polina Vinogradova

This practical ebook is a guide to programming with the Plutus language for highly secure smart contracts on the Cardano blockchain, home of the ada cryptocurrency. Plutus is based on the Haskell functional programming language and comes complete with a full testing environment accessed via any browser.

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About the Book

This practical ebook is a guide to programming with the Plutus language for highly secure smart contracts on the Cardano blockchain, home of the ada cryptocurrency. Plutus is based on the Haskell functional programming language and comes complete with a full testing environment accessed via GitHub or any browser.

The ebook will help you get to grips with using smart contracts on a blockchain by providing real-life examples and functional sample code. Plutus: Writing Reliable Smart Contracts is the first ebook about this new and exciting language and is written by experts from IOHK, the developers of Cardano and ada.

This ebook is concise and focused and uses sample scenarios to help the reader grasp the concepts of this new language. The pitch and flow of this book makes it appealing and is it easy to navigate through the samples which get progressively more complex.

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Computers and ProgrammingHaskellDistributed Systems

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Author

About the Authors

Alejandro Garcia Fdz

I’m a Project Manager in the Education Department at IOHK, Computer Science teacher and Entrepreneur with experience creating small tech companies. I love leading small focused teams to achieve success. I’m an accredited Kanban Trainer.

Lars Brünjes

Dr. Lars Brünjes holds a Ph. D. in Pure Mathematics from the University of Regensburg (Germany) and has been a postdoc at the universities of Cambridge (UK) and Regensburg. After working as a Software Architect for ten years, he  joined the blockchain engineering company IOHK in 2016. As Director of Education for IOHK he gives talks and delivers trainings and courses in the programming language Haskell all over the world, but is also involved in IOHK research projects.

Polina Vinogradova

Polina holds a Ph. D. in Computer Science from the University of Ottawa. Her Ph. D. research consisted of the formalization of category-theoretic proofs, definitions and examples related to the study of abstract computation. She obtained her Master's degree in Mathematics, also from the University of Ottawa, with the focus of her thesis being the study of abstract computation using Category theory, in particular, Turing categories. 

Polina has been working at IOHK as a formal methods software developer since 2018. In 2019, she was a co-instructor (alongside the head instructor, Lars Bruenjes) for the IOHK-run Haskell course in Ethiopia, teaching an all-female cohort of Ethiopian and Ugandan students, many of who went on to work at IOHK afterwards. Later in 2019, Polina took part in running several educational events on the Marlowe smart contract software developed by IOHK team, including a hackathon in Ulaanbaatar, Mongolia, and a workshop in Tel Aviv, Israel. Since then, Polina has been working on the Plutus book.

For more about Polina's experience in Ethiopia, check out this blog post:

https://iohk.io/blog/in-at-the-deep-end-in-addis/

Contents

Table of Contents

About the Authors

Dedication

Colophon

1. Preface

2. UTxO Style Accounting

3. Smart Contracts

3.1. The Power of the Smart Contract

3.2. Real-world and Non Fungible Tokens

3.3. Loans

3.4. ACTUS

4. Welcome to Plutus - A New Language for Reliable Smart Contracts

4.1. Why Plutus?

4.2. About the Plutus Framework

4.3. Running Plutus Playground

5. Plutus Tx

5.1. What is Plutus Tx?

5.2. Writing basic PlutusTx programs

5.3. Functions and datatypes

5.4. The Plutus Tx Prelude and Plutus Tx Builtins

5.5. Lifting values

6. Extended UTxO Model

6.1. Scripts

6.2. Validator, Redeemer, and Data Scripts

6.3. Additional Extended Model Notes

7. Writing Off-Chain Code

8. Our First On-Chain Code

9. A Contract with Parameters

10. Multi-Stage Contracts

11. Looking Beyond Ada and Using Arbitrary Custom Tokens

Glossary

References

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