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

Building the merchant HD wallet

The merchant wallet interface is a simple React app that tracks all of the addresses generated from the merchant's wallet mnemonic and checks whether any payment has been made to them from a customer. It also does block confirmation, that is, for each transaction, it checks whether 40 blocks have been transacted since the transaction was recorded in the blockchain.

The wallet interface app consists of the following components:

  • Container.js: The Container component shown here holds the other components, toggles components display as per state changes, and passes down their props to the components after it receives them from app.js. It checks whether an account has been set in the state for retrieving transactions. If the account has been set, it renders the WalletTrans.js component; otherwise, it renders the WalletMain.js component: