Bitcoin news

4. BigchainDB: a prime example of blockchain bullshit

來源

• SPOF, Byzantine attack

3. Beware the impossible smart contract

新聞來源

Smart contract

A smart contract is a piece of code which is stored on an blockchain, triggered by blockchain transactions, and which reads and writes data in that blockchain’s database.

智能合約中常見的誤解

1. 呼叫外部服務

• 區塊鏈一個重要的特性, 系統中的節點具有共識, 如果資料的來源來自外部, 則會破壞共識
• (Write) 可由銀行或組織將資料倒入區塊鏈中
• (Read) 由可信任的裝置監控區塊鏈的狀態, 來確認呼叫外部 API 時, 是在可信任的情況

2. 強制執行鏈上付款
3. 隱暱機密資料

什麼是智能合約?

2. Fedspeak: What the Federal Reserve Really Thinks About Bitcoin

新聞來源

• The potential benefits of distributed ledger technologies is to address "important frictions" and reduce "intermediation steps in the clearing and settlement process."
• 演講稿全文

1. Homomorphic Encryption and Smart Contracts for Privacy and Transparency

新聞來源

• 同態加密與智能合約完美結合公私鏈的特性
• 區塊鏈為公開且透明的帳本，但若不想讓帳本任何人都可檢視，同時又要滿足審計且可信任的條件，同態加密可用於加密資料，確保只有特定人可存取
• 同態加密