Published in Taipei Ethereum Meetup·PinnedOptimistic Rollup 就這樣用(1)ERC20 的入金、轉帳與出金 — TL;DR 本文會跳過 Optimistic Rollup 的介紹而直接實際演示,關於 Optimistic Rollup 的概念與設計原理筆者將在日後另撰文說明,有興趣的讀者可以先參考下列三篇文章(由淺入深):1. OVM Deep Dive 2. (Almost) Everything you need to know about Optimistic …Ethereum12 min readEthereum12 min read
Published in Taipei Ethereum Meetup·Jun 11, 2021Optimistic Rollup 就這樣用(2)ERC721 的儲值、轉移與提領 — TL;DR 本文會跳過 Optimistic Rollup 的介紹而直接實際演示,關於 Optimistic Rollup 的概念與設計原理筆者將在日後另撰文說明,有興趣的讀者可以先參考下列三篇文章(由淺入深):1. OVM Deep Dive 2. (Almost) Everything you need to know about Optimistic …Ethereum14 min readEthereum14 min read
Published in BSOS Taiwan·Sep 2, 2020Linux 基金會 Fabric 管理者認證CHFA 證照考取經驗分享 — 一個聯盟鏈的開發者需要具備哪些技能呢?對區塊鏈有興趣的工程師,要怎麼證明有其開發能力呢?台灣有資工系、資科系,但發展至今還未有區塊鏈系,究竟一個初入職場的新鮮人要如何證明自己呢? 其實,這個問題可以從聯盟鏈自家推出的各項認證得到解答。最近筆者剛取得由 Linux 基金會推出的 Certified Hyperleder Fabric Administrator(CHFA),這篇文章就來聊聊 CHFA:它到底在認證什麼?我們能學到什麼? 為什麼我們要取得 CHFA,或者說,各項認證? 作為區塊鏈研究人員,筆者探索過不少技術,例如三大聯盟鏈:企業以太坊/Hyperledeger Fabric/R3 Corda、自主身份、私鑰管理等等,平常工作內容包括但不限於:追推特、逛論壇、讀文獻、閱讀原始碼、出門演講等等,未曾有「考證照」的經驗。 後來才知道,除了我以外,幾乎每個加入公司後的開發者都於任職期間通過至少 1 項認證考試,認證費用也是全額由公司贊助,這些動輒 3~5 百美金的考試費用,零零總總加起來對公司來說也是一筆不小的投資。也因為考取各種認證在敝司是稀鬆平常的事,這也對內形成了一種鼓勵學習進修的風氣。「考證照」只是手段,目的是公司成員的專業素養與學習成長。Hyperledger Fabric5 min readHyperledger Fabric5 min read
Published in BSOS Taiwan·Aug 5, 2020Deep Dive on the Design of R3 CordaHow is Corda designed? Why is it generally accepted by the financial industry? — Foreword Corda is a distributed ledger built for enterprises. It is developed and maintained by R3 and officially open sourced in 2016. It is a well-known consortium chain together with Enterprise Ethereum and Hyperledger Fabric. Corda is quite unique. First of all, its design is different from the other two. For…Corda11 min readCorda11 min read
Published in BSOS Taiwan·Aug 3, 2020R3 Corda 的設計思路全面解析Corda 是怎麼設計的?為什麼能普遍獲得金融業的接受,迅速發展應用案例? — 前言 Corda 是一個為企業打造的分散式帳本(Distributed Ledger),由 R3 開發、維護並於 2016 年正式開源,是與企業以太坊和 Hyperledger Fabric 齊名的知名聯盟鏈。Corda 相當獨特 — — 首先,它的設計思路與其他兩者相當不同,例如它使用的是「未花費交易輸出」(Unspent Transaction O …Corda14 min readCorda14 min read
Published in BSOS Taiwan·Jul 13, 2020The Design Philosophy of Hyperledger FabricHow does Fabric improve the blockchain? What are its features? — Fabric was born in 2015 and is one of Hyperledger’s earliest projects. It is mainly developed and open-sourced by IBM. Fabric can be said to be a distrubuted ledger that is designed exclusively for enterprise and is known for its good performance and smart contracts, called “chaincode”, that can support…Hyperledger Fabric11 min readHyperledger Fabric11 min read
Published in BSOS Taiwan·Jul 6, 2020Hyperledger Fabric 獨特架構背後的設計哲學Fabric 如何改進區塊鏈?它具有哪些特性? — 前言 Fabric 誕生於 2015 年,是 Hyperledger 最早期的項目之一,其主要由 IBM 開發並開源,並受到來自多國家的科技公司、顧問公司和新創的廣泛參與。Fabric 可以說是專為企業應用而生的分散式帳本,其以較好的效能與能支援通用程式語言開發的智能合約著稱。然而另一方面,Fabric 的複雜架構、充滿大量隱晦技術用語的文件、以及與主 …Hyperledger Fabric15 min readHyperledger Fabric15 min read
Published in BSOS Taiwan·Jun 15, 2020The Very First Challenge to Adopt Blockchain for Enterprises: key Management!What are so tricky about the key management of consortium chain? Can we find a best practice? — Foreword According to the latest IDC Worldwide Semiannual Blockchain Spending Guide, the Asia-Pacific region’s spending on blockchain solutions reached US$522.7 million in 2019, an increase of 81% compared to 2018. …Blockchain9 min readBlockchain9 min read
Published in BSOS Taiwan·Jun 10, 2020企業導入區塊鏈的第一道難題:私鑰管理!聯盟鏈私鑰管理有什麼挑戰及特別之處?最佳實務為何? — 前言 根據最新的 IDC 全球半年度區塊鏈支出指南,2019 年亞太地區在區塊鏈解決方案上的支出達到 5.227 億美元,與 2018 年相比增長 81%,預計企業導入區塊鏈的需求將在未來 5 年快速增長,複合年增長率為 59.8%。 雖然有越來越多企業想導入區塊鏈,然而區塊鏈卻不同於以往的企業 IT 技術,大部分的企業或技術廠商仍缺乏系統化的實作知識 …Blockchain11 min readBlockchain11 min read
Published in BSOS Taiwan·Apr 30, 2020What Problems Has Enterprise Ethereum Solved?What does the Enterprise Ethereum Alliance (EEA) do? What are the specifications of Enterprise Ethereum? — Foreword Public Chain, also well recognized as public chain today first originated in the hacker circle. It emphasizes decentralized governance and permissionless participation, with Ethereum being one of the representative of the blockchain technology. …Blockchain11 min readBlockchain11 min read