development

An overview of how I implemented the ERC1155 metadata extension to get subname metadata on OpenSea using the ENS Metadata Service.

Problem The Training Plan Android app is set up such that the majority of the app is controlled from a single Activity (MainActivity) that displays different content fragments dependent on the screen that a user needs to see. A few other activities are used for example the IndividualRunActivity which displays

This is one of those blog posts that: * Is for my own future reference - reminding myself how/why I did things. * Answers questions that Google/Stack Overflow suggest many others are looking to solve. It essentially covers one way of approaching building a production ready product that is appropriately

One of Double Negative's products is EthTools.com, a website which provides a number of tools for interacting with the Ethereum blockchain. I have recently been playing around with D3.js a visualisation library written is Javascript. It hit me that visualising the Ethereum blockchain would be incredibly

Today (Monday 8th May), I am able to announce some new functionality for EthTools.com - Accounts, and Ethereum Name Service (ENS) Integration. Double Negative has always been a company created to build high utility web applications on top end domain names. Having been personally invested in the Ethereum platform