This is an ongoing project to implement a simplistic cryptocurrency network modeled after Bitcoin but streamlined for the purpose of being easier to follow (and build). As we go we'll be learning about the core ideas that make Bitcoin work, and getting a lot of practice with some interesting algorithmic and cryptographic problems. This is taken from the repo here: http://github.com/worace/coinage
If you're new to the ideas of cryptocurrencies in general, these are some great resources to get you started. The Minimum Viable Blockchain article especially is a great crash course for someone new to the ideas.
- Minimum Viable Blockchain - This article by Ilya Grigorik gives a great, fairly short overview of the main concepts in bitcoin
- Bitcoin for the Befuddled - Another good high level overview of bitcoin that goes more in depth than Ilya's article.
- Mastering Bitcoin: Unlocking Digital Cryptocurrencies This is a great in-depth look at the technical systems behind Bitcoin. This will be our main reference point when we get stuck on technical questions.
- Understanding Elliptic Curve Cryptography
- Working with TCP Sockets - For the peer-to-peer networking portions of our system, we'll need to use TCP sockets to communicate between nodes in the network. This book has a good overview of these techniques, focused on ruby
This notes doc has a high-level overview of many of the issues we'll need to solve during the project.
- Iteration 0 - Creating Wallets and Signing/Serializing Transactions
- Iteration 1 - Creating and Mining Blocks
- Iteration 2 - Working with the BlockChain -- checking balances and generating payment transactions
- Iteration 3 - Networking Basics -- connecting with TCP and handling basic message types
- Iteration 4 - Validating Incoming Transactions and Blocks
- Iteration 5 - Extended Networking: Discovering Additional Peers and Forwarding Valid Blocks and Transactions
- Iteration 6 - Mining: Aggregating Transactions and Solving Blocks
- Iterations 7+ - Advanced Topics - Mining optimizations, Base58-Check encoding, multi-address wallets, Wallet GUI, Node DNS Server, etc.
This is an exploratory project to understand the subtleties that are involved with implementation of a cryptocurrency. The current functionality is:
- Can create wallets and sign transactions
- Transactions have inputs and outputs
- A miner can mine blocks and accept transactions
- A miner can accept connections through TCP sockets
In the works:
- Block validations
- Change to Elliptic Curve Cryptography as the digestion mechanism
- Consensus algorithms