This tutorial explains how to execute a Smart Contract on your private Kaleido Ethereum Blockchain with the Truffle Framework. 

Prerequisites

Do read "Deploy a Private Ethereum Blockchain in 10 minutes" to have your private Blockchain instance running before continuing with this tutorial.

Setting Up

If you haven't setup the Truffle Framework, here are the steps to do so.

This is part 4 of the step-by-step tutorial to walk the reader through the development of a Minimum Viable Ethereum Mobile Wallet in React Native. I call it the Minimum Viable Wallet or MVW in short.

MVW's source codes can be found here.

In this part, I will explain the codes that lets me execute functions in a smart contract.

Tutorial Structure

This is the last of the 4-parts tutorial.

This is part 3 of the step-by-step tutorial to walk the reader through the development of a Minimum Viable Ethereum Mobile Wallet in React Native. I call it the Minimum Viable Wallet or MVW in short.

MVW's source codes can be found here.

In this part, I will explain the codes that lets me create a new Ethereum Wallet account and how I secure my private key in the mobile device.

Tutorial Structure

This tutorial is a work in progress. When done, it will come in 4 parts.

This is part 2 of the step-by-step tutorial to walk the reader through the development of a Minimum Viable Ethereum Mobile Wallet in React Native. I call it the Minimum Viable Wallet or MVW in short.

In this part, I will describe how to build the app from it's source codes that you can find here.

Tutorial Structure

This tutorial is a work in progress. When done, it will come in 4 parts.

This step-by-step tutorial walks the reader through the development of a Minimum Viable Ethereum Mobile Wallet in React Native. It will be useful for folks who need a React Native boilerplate to base on to develop Ethereum-based blockchain apps.

Motivation

There are many Blockchain use-cases that calls for a private Blockchain network between a group of participants. One example is Project Ubin - a project initiated by the Monetary Authority of Singapore that tests the use of a private distributed ledger for clearing and settlement of payments and securities between banks. Another example is a private supply chain network where a group of suppliers, distributors and end users track goods as they move across the supply chain. 

This is the second of a 2-part article that explains the codes behind Smart Contract Explained by Demonstration. You may read part one here.

Background

I depend tremendously on the online Remix IDE when I write Solidity Smart Contracts. Once in a while, I run an Ethereum workshop where participants code with the Remix IDE too. So I shudder to think that on some unfortunate days, the online Remix IDE may be inaccessible.

This is the first of a 2-part article that explains the codes behind Smart Contract Explained by Demonstration and will be of interest to developers who want to learn how to code a Web3-based DApp to serve as front-end user interface to a Solidity Smart Contract. In particular, this article explains the ways to:

This article builds on the tutorial written by Michael Chan here. In his article, Michael demonstrated how to code a React.js Dapp that writes a file's IPFS hash to an Ethereum Solidity Smart Contract and stores the file in IPFS. Michael Chan's article is a great piece to follow if React.js is what you are seeking.