Book Image

Blockchain Development for Finance Projects

By : Ishan Roy
Book Image

Blockchain Development for Finance Projects

By: Ishan Roy

Overview of this book

Blockchain technology will continue to play an integral role in the banking and finance sector in the coming years. It will enable enterprises to build transparent and secure business processes. Experts estimate annual savings of up to 20 billion dollars from this technology. This book will help you build financial apps using blockchain, guiding you through enhancing popular products and services in the banking and finance sector. The book starts by explaining the essential concepts of blockchain, and the impact of blockchain technology on the BFSI sector. Next, you'll delve into re-designing existing banking processes and building new financial apps using blockchain. To accomplish this, you'll work through eight blockchain projects. By demonstrating the entire process, the book helps you understand everything from setting up the environment and building frontend portals to system integration and testing apps. You will gain hands-on experience with the Ethereum, Hyperledger Fabric, and Stellar to develop private and public decentralized apps. Finally, you'll learn how to use ancillary platforms and frameworks such as IPFS, Truffle OpenZeppelin, and MetaMask. By the end of this blockchain book, you'll have an in-depth understanding of how to leverage distributed ledgers and smart contracts for financial use cases.
Table of Contents (17 chapters)
Section 1: Blockchain Payments and Remittances
Section 2: Blockchain Workflows Using Smart Contracts
Section 3: Securing Digital Documents and Files Using Blockchain
Section 4: Decentralized Trading Exchanges Using Blockchain
Appendix: Application Checklist

Orderbook smart contract

The orderbook smart contract is the core component of our entire project.

It carries out the following functions:

  • Records incoming buy/sell offer requests from the frontend and moves the base or counter asset from the user's Ethereum account to the smart contract account.
  • Allows traders to view the recorded buy/sell offers on the smart contract.
  • Accepts trade requests against already recorded buy/sell offers and executes the trade. As part of the trade, the orderbook updates the available amount in an offer, and transfers the base or counter asset both from the trader's account and to the trader's account.
  • Emits an event to indicate when a new buy or sell offer is updated, or a new trade is carried out. This event will be subscribed to by our frontend app to update and display the orderbook in real time.

Now, let's write our orderbook...