I'm a former bond trader and consultant who has worked at the intersection of finance and technology for ten years. I'm interested in use cases for blockchain that enable individuals and businesses to transact with greater efficiency, transparency, and security. If you'd like to connect with me, feel free to follow or DM me on Twitter.

• Project 1: Create Your Own Private Blockchain
• Project 2: Build CryptoStar Dapp on Ethereum
• Project 3: Ethereum Dapp for Tracking Items through Supply Chain
• Project 4: FlightSurety
• Project 5: Real Estate Marketplace Capstone

This repo is a multi-root workspace configured in Visual Studio Code. To open the workspace in VS Code, open the blockchain.code-workspace file. Each root is a project folder containing a project submission to the Blockchain Developer Nanodegree. Each project contains a README.md file with further instructions on running the project code.

In this project, I created a private blockchain to record ownership of stars. Built as an express.js app, I implemented the code in src/block.js and src/blockchain.js that provides the functionality of validating a block on the blockchain, decoding the block, and constructing a chain of blocks that can be signed with an Electrum wallet. The project also exposes endpoints to search for blocks by block height, block hash, and by the address of the wallet that signed the block.

More information about this project is available in the project folder

The purpose of this project is to develop familiarity with building a decentralized app (dApp) on Ethereum. In the course, I created v1 of the Star Notary app which used the ERC721 interface to declare a non-fungible token. In this project, I extended the functionality of the Star Notary dApp by adding a name and symbol to our token and additional functionality including: (i) looking up the given name of a star given its token id, (ii) exchanging two stars between two owners, and (iii) transfering a star from one user to another user.

More information about this project is available in the project folder

In this project, I created a dApp supply chain solution on Ethereum using smart contracts with role-based permissions to track and verify a product's authenticity. The purprose of the project is to get experience building an application end-to-end including planning, drafting and testing smart contracts, deploying the smart contracts, and creating a frontend interface with web3 functions to allow a client to interact with the smart contracts.

More information about this project is available in the project folder

The FlightSurety application is a dApp that enables airlines to form a consortium to register flights, receive flight status updates from mock oracles, and make payouts to passengers who have purchased flight insurance. The dApp separates data storage concerns from application logic that make the app possible to upgrade without re-deploying the data contract.

More information about this project is available in the project folder

//TODO: complete project and summarize

More information about this project is available in the project folder