Deployment automation with ShipIt

Automatic deployment is an essential part of continuous integration (CI). But sometimes full-fledged CI tools/services — like Jenkins, Gitlab-CI, or Travis-CI — are overkill for simple or personal projects. That’s where deployment automation tools like ShipIt shines. ShipIt is not the only automation tool. There are Capistrano (Ruby), Envoy (PHP), Fabric (Python), and, Gradle +… Read More

Node.js – smart contract integration with truffle-contract and

While running your own Ethereum node with geth by using web3js from node.js (backend) app is a common solution, connecting to a public Ethereum node such as and using [truffle-contract](] gives some benefits: No need to maintain your own Ethereum node (syncing a full node requires huge storage space! (around 40 GB for Ropsten))… Read More

Sending Bitcoin programmatically using BlockCypher API

BlockCypher provides convenient REST APIs to send cryptocurrency like Bitcoin easily. Here are two APIs that we can use to send Bitcoin from one address to another: 1. Build transaction skeleton 2. Push signed transaction Here are the step by steps of using those APIs in JavaScript (Node.js) in testnet3 Bitcoin network. First,… Read More