This book is for blockchain/DApp developers and start-ups who are looking for a one-stop guide to building innovative and highly secure solutions in the FinTech domain using real-world use cases. It is also suitable for developers working in financial enterprises and banks and for solution architects looking to build brand-new process flows using blockchain technology. Working experience with Solidity and prior knowledge of finance/trade is required to get the most out of the book.
- Title Page
- Copyright and Credits
- About Packt
- Contributors
- Preface
- Section 1: Blockchain Payments and Remittances
- Blockchain in Financial Services
- Building a Blockchain Wallet for Fungible and Non-Fungible Assets
- Designing a Payment Gateway for Online Merchants
- Technical requirements
- Defining our blockchain payment ecosystem
- Generating dynamic merchant addresses using HD wallets
- Creating an e-commerce website and payment gateway
- Creating an API for generating dynamic payment addresses
- Building the merchant HD wallet 
- Running the payment ecosystem
- Summary
- Corporate Remittances and Settlement
- Technical requirements
- Understanding the blockchain corporate remittance application and network layout
- Setting up the Hyperledger Fabric Bankchain network
- Creating blockchain identities for the banks
- Building the corporate remittance contract
- Setting up the IPFS network
- Setting up the bank databases
- Building the bank backend servers 
- Creating the app environment
- Writing the backend server code
- Creating an endpoint to fetch customer data
- Creating an endpoint to post payment requests
- Creating a service to get transaction details
- Writing a method to publish documents to the IPFS network
- Writing a method to submit transactions to the blockchain network
- Writing a method to update the customer's balance
- Writing a method to add transactions to the database
- Changes for backend server for Bank B
- Building the transaction listeners for the banks
- Creating the corporate remittance app frontend in React
- Creating the React project environment
- Building the container component
- Building the AppLogin component
- Building the Transfer component
- Building the ViewTransactions component
- Writing the methods in the App.js file
- Writing the constructor 
- Writing a method for setting the user account
- Writing methods to toggle between app components
- Writing methods to handle input fields
- Writing a method to submit payment requests
- Writing a method to fetch customer transactions
- Writing a method to set the current user balance
- Running the corporate remittance app
- Summary
- Enabling Cross-Border Remittances with Real-Time KYC/AML Verification
- Technical requirements
- Designing a workflow for blockchain cross-border remittance
- Setting up a test network
- Creating user accounts
- Setting up the bank domains 
- Setting up the federation servers
- Setting up the compliance server
- Setting up the bridge server
- Setting up the callbacks server
- Building the bank portal
- Running the remittance platform
- Summary 
- Section 2: Blockchain Workflows Using Smart Contracts
- Building a Letter of Credit Workflow Module Using Smart Contracts
- Technical requirements
- Understanding smart contracts and blockchain-based workflows
- Creating a USD token for accounting
- Deploying a USD token for accounting
- Creating an LC Master smart contract
- Creating an LC smart contract
- Deploying the LC Master smart contract
- Creating the LC module React app
- Running the LC module
- Summary
- Section 3: Securing Digital Documents and Files Using Blockchain
- Building a Tamper-Proof Document Storage System
- Technical requirements
- Tamper-proof document storage using blockchain 
- Setting up the Hyperledger Fabric network 
- Writing and deploying the DocsApp chaincode 
- Building the backend services
- Writing the backend server
- Building a method for listing files in a directory
- Building a method to write a file hash to the blockchain
- Building a method to write the MTH and the FTH to the blockchain
- Building a method to read MTH and FTH from the blockchain
- Building a function to compare the current hash signature of a file with the hash recorded in the blockchain
- Writing a backend service for securing a directory by recording hashes in the blockchain
- Writing a service to verify the last modified time and the file tree structure
- Writing a service to inspect and identify tampered files
- Writing the backend server
- Creating a React frontend for the app
- Creating the React project environment
- Building the container component
- Building the PathMapper component
- Building the FolderBlock component
- Building the FolderBlockChkStatus component
- Writing the app methods 
- Creating a method to set the timer interval
- Creating a method to write the hashes to the blockchain
- Creating a method to check for a mismatch between the last modified time and the file tree structure
- Writing a method to check whether any files have been added or removed from the directory
- Writing a method for identifying tampered files from the list of files
- Running the tamper-proof application
- Summary
- Section 4: Decentralized Trading Exchanges Using Blockchain
- Building a Decentralized Trading Exchange
- Developing a Currency Trading Exchange for Market Making
- Looking into the Future
- Appendix: Application Checklist
- Other Books You May Enjoy
Who this book is for
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