May 4Some Potentially Huge News for Flow Developers!Hello! It has been a while since I posted last. Almost a year, but not quite! Lots of things have been happening on the Flow team. In case this the first time reading one of my posts, I am a smart contract engineer on the core Flow Blockchain Team. The…Smart Contracts4 min read
Jun 24, 2021How do I check msg.sender in Cadence? Capabilities!Hello! My name is Josh Hannan and I am a smart contract engineer on the Flow Team at Dapper Labs. It has a been a while since I posted last. It has been a busy time for the Flow team. Things have been going fast here on the Flow team…Smart Contracts4 min read
Apr 22, 2021Optionals in Cadence? Not Optional!Hello everyone! Welcome to my bi-weekly blog about Cadence, the new smart contract programming language for the Flow Blockchain. If you are a newcomer, check out my introductory blog post to get started! Today, I’m going to talk about an aspect of Cadence that many people have a lot of…Smart Contracts8 min read
Apr 8, 2021How I organize my Cadence projectsWelcome back to my Cadence blog! Josh here! I’m a smart contract engineer on the Flow team at Dapper Labs and I’m putting out short bi-weekly blogs about our programming language, Cadence. If you’re new to Cadence, please check out my introductory blog to get started! Taking your First Steps with Cadence A summary of resources each newcomer to Flow should complete to get comfortable writing smart contracts in Cadence.joshuahannan.medium.comBlockchain6 min read
Mar 25, 2021Creating a token on the Flow blockchain? Don’t forget this VITAL part!Disclaimer: Do not be alarmed by the title and thumbnail. Nothing has gone wrong, I just want people who are writing smart contracts to make sure they understand this very important part of token smart contracts. Welcome to my Cadence blog! I’m Josh, a smart contract developer on the Flow…Smart Contracts6 min read
Mar 12, 2021What I’ve learned in the year since I wrote the NBA Top Shot smart contractsHello! My name is Josh, and I write smart contracts at Dapper Labs for the Flow blockchain. If you’re new here, welcome! This is my bi-weekly blog about Cadence, Flow’s new state-of-the-art language for smart contracts. …Blockchain11 min read
Feb 25, 2021A retrospective of the Cadence CupHello! My name is Josh, and I am a smart contract engineer on the Flow Team at Dapper Labs. If you’re new here, welcome! This is a blog about Cadence, Flow’s new state-of-the-art language for smart contracts. …Blockchain4 min read
Feb 18, 2021Basic Access Control in CadenceWe made it to week 2 without forgetting about the Blog! Take that, haters! 🙌 Hello! My name is Josh, and I am a smart contract engineer on the Flow Team at Dapper Labs. If you’re new here, welcome! This is a weekly blog about Cadence, Flow’s new state-of-the-art language…Blockchain8 min read
Feb 11, 2021Taking your First Steps with CadenceHello! My name is Josh Hannan and I am a smart contract engineer on the Flow Team at Dapper Labs. I’ve been in the blockchain space since early 2017, spent a few years working on Ethereum projects, and started working with the Flow team in September of 2019. …Smart Contracts6 min read
Published in Modular-Network·Jun 29, 2018Why You Probably Shouldn’t Use a Single Private Key to Secure Your AssetsReasons why it is unreasonable to expect yourself and everyone else in the world to only have one fragile layer of security for their assets Let me tell you a story…. Matthew Mellon [1] was a guy who had high hopes for the cryptocurrency Ripple (XRP). He saw Ripple as a great step forward for the…Bitcoin8 min read
