A simple Blockchain with Swift.

This is an implementation of Blockchain with Swift based on this great article:

Learn Blockchains by Building One – Hacker Noon

• Open BlockchainSwift.xcodeproj with Xcode
• Build and Run!

Just seeing the sample app is NOT fun at all. Trying to implement by yourself according to the reference articles would be fun :)

The implementation is quite simple, less than 200 lines.

For example, Here is the Block:

struct Block: Codable { let index: Int let timestamp: Double let transactions: [Transaction] let proof: Int let previousHash: Data // Hashes a Block func hash() -> Data { let encoder = JSONEncoder() let data = try! encoder.encode(self) return data.sha256() } }

Here are the articles:

• Learn Blockchains by Building One – Hacker Noon

日本語版（Python）:

• ブロックチェーンを作ることで学ぶ 〜ブロックチェーンがどのように動いているのか学ぶ最速の方法は作ってみることだ〜

日本語版（Swift）:

• Swiftでブロックチェーンを実装してみる

*The "Consensus" part is available in the feature/consensus branch.