The IOHK Haskell and Cryptocurrency course in Barbados brought together students and professionals who were interested in learning the Haskell programming language. The course ran for eight weeks at the University of West Indies. Barbados was the second time the programme was offered, after a successful inaugural course held in Athens last year. The goal of the course is to…

Why do we need transaction fees?

There are two main reasons why transaction fees are needed for a cryptocurrency like Cardano:

People who run full Cardano nodes spend time, money and effort to run the protocol, for which they should be compensated and rewarded. In contrast to Bitcoin, where new currency is created with each mined block, in Cardano, transaction fees are the only…

前回のブログでは、Cardanoにスマートコントラクトサポートを導入するプロトコルアップグレード、Alonzoを紹介しました。AlonzoはPlutusを使用した機能的なスマートコントラクトを開発するためのインフラを整え、ツールを追加します。

PlutusプラットフォームはCardanoブロックチェーンにネイティブなスマートコントラクト言語を提供します。Plutusを理解し十分に使いこなすためには、3つのコンセプトを理解することが必要です。

• 拡張UTXOモデル（EUTXO）
• Plutus Core（プルータスコア） - Plutusのオンチェーン部分
• Plutus Application Framework（プルータスアプリケーションフレームワーク：PAF） ‒ スマートコントラクトのやり取りを可能にするPlutusのオフチェーン部分

Plutus…

Setting solid parameter values – while maintaining flexibility for the future – will be key to the growth and ongoing decentralization of Cardano. After consulting with the community, and working closely with my colleagues Kevin Hammond and Alex Appledoorn, we believe we’ve identified a good place to start.

The behavior of Cardano Shelley is controlled by around 20 parameters…

As we approach Shelley on the Cardano mainnet, decentralization has, inevitably, become a topic of debate. Regardless of any initial founding intent, proof-of-work cryptocurrencies such as Bitcoin and Ethereum have become more centralized over time. The early days of Bitcoin enthusiasts mining blocks at the weekend are long gone and today we see a small group of specialized…