BTMs bringing cryptocurrency adoption

There are various ways for users to access cryptocurrency like Bitcoin (BTC). The most common method is through a trusted digital exchange, like Coinbase and Binance. All that this requires the user to have is a smartphone with an app installed. Once they have the app, users can purchase cryptocurrency that is listed on the exchange.

Another way to get into crypto is by using a Bitcoin ATM or BTM. Using a BTM is a fast and easy way to access Bitcoin and other cryptocurrencies (offered by the BTM operator) if you are using cash. They can be found throughout…


Bitcoin ransoms (Photo Credit Sora Shimazaki)

According to antivirus vendor Sophos, ransomware is evolving into a bigger threat as it becomes faster, smarter and costlier to deal with. In the age of modern enterprise networks the expectations are the IT department should have all their bases covered when dealing with computer viruses. We have been through the worst of times, from the ILoveYou virus to worms like MyDoom. While lessons have been learned, computer viruses continue to evolve at the pace of technological advancement.

Computer viruses don’t have a life of their own, but they can also mutate like biological viruses. Rogue developers who create these…


Web3.js

This is a continuation from Part I.

Recap
In the first part, we built our environment (Node.js, Web3.js and connection to an Ethereum node). The Web3 object was then discussed along with basic commands developers can use from the Node prompt. Examples were given for working with user accounts, querying the blockchain and sending a transaction from a Javascript file. Part II will continue with how to interact with a smart contract on the blockchain.

Overview
In Part II we will go over details about smart contracts, and how to interact with them using the Web3.js library functions. We will specify…


Web3.js

The Web3.JS framework allows developers to interact with Ethereum smart contracts using Javascript Node.js. The framework consists of modules with specific functions:

  • web3-eth is for the blockchain and smart contracts.
  • web3-shh is for the whisper protocol, to communicate p2p and broadcast.
  • web3-bzz is for the swarm protocol, a decentralized file storage.
  • web3-utils contains useful helper functions for DApp (Decentralized Application) developers.

This provides a standard way for developers to use API calls and integrating functions with a Node.js frontend application. This allows users to access to blockchain features like sending transactions, checking account balances and signing messages.

Getting Started

The following are…


(Photo Credit Prateek Katyal)

Cryptocurrency exchange Digitex has announced a new social network on their platform called Blockster. This was launched through their IEO (Initial Exchange Offering) platform Blockfunder, which crowdfunded the project. This is also the first project on the platform to kick off with a token sale on June 7, 2021. Blockster’s native token BXR, will start at $1 per token. BXR sales will continue until a peak price of $2.25 is reached. At the end of the IEO, the tokens are distributed to buyers and listed on the Digitex and Uniswap exchanges. Other exchange listings will be announced soon thereafter.

According…


(Image Credit Wikipedia AlexanderAlUS)

Tesla and GM are not the only ones with promising battery technologies. The GMG (Graphene Manufacturing Group) are developing an aluminum-ion (al-ion) battery made from graphene, a form of graphite. These batteries have the potential for ultra fast charging capabilities that outperform lithium-ion (li-ion) batteries. Think about fully charging a depleted battery to 100% in 1 to 5 minutes. That is about 10X more than lithium-ion charging while also lasting longer with less cooling requirements.

The GMG has partnered with the Australian Institute for Bioengineering and Nanotechnology at the University of Queensland (AUS) to conduct experiments. What they discovered is…


Dogecoin originally started as a meme in late 2013 but has suddenly gained a strong following that has pumped its price to serious market capitalization. This was the least expected to occur given that Dogecoin has no actual use case other than to transfer value, a typical blockchain application. With supporters like Elon Musk, entrepreneur Mark Cuban, WallStreetBets followers, and some social media influencers on TikTok, the value of Dogecoin began to surge in 2021.

The coin or token called DOGE is now worth (as of this writing) $0.50. Its overall value has reached that of some of the world’s…


Kinetic One 4D Immersive Earphones

Using headphones or earphones provides a more personal experience of audio delights. It is about enjoyment, whether you put them on to escape the crowd or to listen to music. Over the years, these devices have become more smaller, more durable and portable to adjust to the times. The user experience is evolving toward more mobility and immersion, and that is what Decibell provides with their Kinetic One earphones.


(Photo Credit By Sourav Mishra)

You may hear the media reporting on self-driving cars with emphasis on the car’s technology. This often turns to discussions on AI, LiDAR and computer visioning systems. That is surely an important part of autonomous driving, but there is another component. There must also be an infrastructure in place to support a driverless car. It is proving to be a challenge for automakers to achieve L5 Full Self Driving certification, let alone get to L3. Honda’s Legend takes the honor of first L3 certified car, but it is in limited release. Even though millions of miles have been logged by…


Javascript AJAX

AJAX (Asynchronous Javascript And XML) are Javascript techniques that brings more interactive interfaces and faster performance to responsive HTML content on the web. AJAX is an open standard that works in coordination with HTML, CSS and Javascript along side XML. It executes within the Javascript framework with data fetched and stored in XML format. A use case for AJAX is when accessing data from external sources even after a web page has finished loading.

The following is the process behind the AJAX methodology:

  • Data is read from a web server after an HTML page has loaded
  • The data can be…

Vincent Tabora

Editor HD-PRO, DevOps Trusterras (Cybersecurity, Blockchain, Software Development, Engineering, Photography, Technology)

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