SKU: 18990541919

Blockchain & Digital Currencies

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Description

Blockchain & Digital CurrenciesCOURSE OVERVIEW: Welcome to the Blockchain & Digital Currencies course. This program will equip you with the skills and knowledge to understand how blockchain technology works, how major cryptocurrencies operate, and how to interpret the risks, opportunities, and real world applications emerging from this rapidly evolving field. Throughout this course, you will learn how to move beyond headlines and hype so you can explain core concepts clearly,

COURSE OVERVIEW:

Welcome to the Blockchain & Digital Currencies course. This program will equip you with the skills and knowledge to understand how blockchain technology works, how major cryptocurrencies operate, and how to interpret the risks, opportunities, and real-world applications emerging from this rapidly evolving field. Throughout this course, you will learn how to move beyond headlines and hype so you can explain core concepts clearly, recognise genuine innovation, and critically evaluate blockchain and digital currency developments.

This course begins by introducing the fundamental concepts that underpin blockchain networks and the earliest digital currencies. It explains what a blockchain is, how a blockchain works in practice, and why blockchains are not flawless despite their reputation for security and integrity. It also examines the top 10 crypto heists in the history of digital currencies to highlight practical vulnerabilities and lessons learned, and introduces Bitcoin as the first and most influential cryptocurrency, explaining why it is regarded as the “mother of all cryptocurrencies” and how Bitcoin itself functions as a peer-to-peer digital cash system.

Foundations in cryptography and transaction security are then explored to show how trust is established without a central authority. This section explains how encryption and decryption are used in blockchains, the difference between symmetric and asymmetric encryption, and the meaning of public key cryptography in securing ownership and transfers. It also examines cryptographic hashing functions and how they support immutability, and explains how digital signatures are used in Bitcoin and other blockchains, including the digital signature process from key generation to verification. This section goes on to introduce the meaning of Bitcoin mining, what Bitcoin wallets are, the different types of wallets including web, mobile, desktop, paper, and hardware wallets, and why Bitcoin has generated so much hype in markets and media.

The broader digital currency ecosystem is then examined so you can see how Bitcoin sits within a larger and more diverse landscape. This section explains what is meant by digital currencies, outlines the idea of the top 10 digital currencies in terms of market capitalisation, and introduces major cryptocurrencies such as Ethereum, Litecoin, Ripple, Bitcoin Cash, Binance Coin, and EOS. It also highlights how different projects vary in purpose and design, and introduces the most common terms used by crypto traders so that you can interpret market commentary, trading discussions, and platform information more confidently.

Digital asset funding models and major blockchain projects are then explored to connect technology with investment and innovation dynamics. This section explains the initial coin offering (ICO) process, discusses the ICOs that survived major market cycles, and examines well-known projects such as NEO, Ethereum, Spectrecoin, Stratis, and Ark in terms of their goals and design choices. It also analyses why many ICOs fail, including issues of governance, regulation, technology, and market adoption, and shows how these patterns can be used to assess the credibility and risk profile of new digital currency offerings.

The emerging and future applications of blockchain technology across industries are then considered, focusing on how distributed ledgers may reshape existing systems and services. This section explores the blockchain future in shipping, including supply chain visibility and documentation; in fintech, including payments, settlement, and asset tokenisation; in energy, including peer-to-peer trading and grid management; in healthcare, including data integrity and secure sharing; and in charity and social contexts, including transparency in donations and program delivery. It highlights both the potential and the constraints that real-world implementations must address.

By the end of this course, you will be able to explain what blockchains and digital currencies are, describe how Bitcoin and other major cryptocurrencies operate, and outline the cryptographic mechanisms that underpin security and trust in decentralised systems. You will understand how wallets, mining, ICOs, and major blockchain projects fit together within the broader ecosystem, and how to interpret key risks such as security breaches and project failure. Most importantly, you will be able to use accurate terminology, evaluate claims about blockchain use cases in sectors such as finance, energy, and healthcare, and form balanced, informed views on the role that blockchain and digital currencies may play in future economic and technological developments.

LEARNING OUTCOMES:

By the end of this course, you will be able to understand:

  • What is a blockchain?
  • How does a blockchain work?
  • Is the blockchain flawless?
  • The top 10 crypto heists during the history of digital currencies
  • What is Bitcoin?
  • Why is Bitcoin the mother of all cryptocurrencies?
  • How Bitcoin works?
  • How encryption and decryption is used in blockchains?
  • Symmetric vs asymmetric encryption
  • The meaning of a public key cryptography
  • What are the cryptographic hashing functions?
  • How digital signatures are used in Bitcoin and blockchains?
  • The digital signature process
  • The meaning of Bitcoin mining
  • What are Bitcoin wallets?
  • The different types of wallets including: web wallets, mobile wallets, desktop wallets, paper wallets and hardware wallets
  • Why is bitcoin so hyped?
  • What is meant by digital currencies?
  • The top 10 digital currencies in terms of market cap
  • The cryptocurrency - Ethereum
  • The cryptocurrency - Litecoin
  • The cryptocurrency - Ripple
  • The cryptocurrency - Bitcoin Cash
  • The cryptocurrency - Binance Coin
  • The cryptocurrency - EOS
  • The initial coin offering (ICO) process
  • The ICOs that survived
  • The NEO project
  • The Ethereum project
  • The Spectrecoin project
  • The Stratis project
  • The Ark project
  • Why do ICOs fail?
  • The blockchain future in shipping
  • The blockchain future in fintech
  • The blockchain future in energy
  • The blockchain future in healthcare
  • The blockchain future in charity & social
  • The most common terms used by crypto traders

COURSE DURATION:

The typical duration of this course is approximately 2-3 hours to complete. Your enrolment is Valid for 12 Months. Start anytime and study at your own pace.

ASSESSMENT:

A simple 10-question true or false quiz with Unlimited Submission Attempts.

CERTIFICATION:

Upon course completion, you will receive a customised digital “Certificate of Completion”.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 18990541919

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4.3 ★★★★★
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Verified Purchase
David J.
West Palm Beach, US
★★★★★ 5
Excellent espresso tool
Color: Black
Very nicely made and works as intended. Also comes with extra needles. Highly recommend.
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
JP Richardson
Port Orchard, US
★★★★★ 5
WDT Tool: The Needle in My Espresso Haystack
Color: Black, Color: Black
I kind of went down a deep dive researching these WDT (Weiss Distribution Technique) tools, and I have to say, this one hits the sweet spot! The needle size is just right, and the shape is spot on for what I need. Plus, it’s a nice perk that you can remove and replace the needles. I’ve tried using needles and bobby pins in the past, but they were too thick and just ended up creating their own channels—talk about a brewing disaster! Now, here’s the twist: even though it comes with seven needles installed (and more replacements), I find it a bit overkill. With all those needles, it just traps the grinds in the center, pushing stuff around like it’s playing a game of “don’t let the coffee escape.” So, I stick with just three needles in a triangle formation for optimal distribution. Pro tip: don’t forget to adjust the depth as you use it to ensure you’re getting the best coverage of your coffee grounds! The build quality is actually pretty impressive. It feels like well-constructed metal components that could survive a small espresso war. Plus, it's more affordable than some of those fancy options out there—because who needs a second mortgage for great coffee? It looks quite nice on my counter, and the little stand is a handy extra touch. Overall, if you’re looking to up your espresso game and avoid the chaos of uneven distribution, this WDT tool is worth considering. Just remember: less is sometimes more when it comes to needles!
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Reviewed in the United States on October 20, 2024
V
Verified Purchase
Victoria Hawkins
Houston, US
★★★★★ 5
Love this thing!!!
Color: Black, Color: Black
Hey, coffee lovers! ☕️ I recently got my hands on the WDT Espresso Distribution Tool Espresso Stirrer Tools for Barista, and let me tell you, it's a game-changer! 🙌 I'm absolutely thrilled with this amazing tool and can't recommend it enough to fellow coffee enthusiasts and professional baristas alike. First things first, the build quality of this espresso stirrer is top-notch! 💪 The aluminum alloy handle not only adds durability but also gives it a sleek and professional look, especially in the matte black finish. Holding this tool feels great, and the ergonomic design ensures a comfortable grip even during those long brewing sessions. The 0.35mm 7 needles are perfectly spaced, allowing for precise and consistent distribution of coffee grounds in the portafilter. This means a more even extraction and an enhanced flavor profile in every sip. And guess what? You get 7 extra replaceable needles as a bonus! 🎉 This ensures the longevity of the tool and easy replacement when needed. But wait, there's more! The included stand is a fantastic addition to this package. 🎁 It not only serves as a convenient storage solution but also adds a touch of elegance to my coffee setup. No more rolling around and cluttered workspace. Everything stays in place, thanks to the stand! Using the WDT Espresso Distribution Tool is a breeze! ⚡️ The precisely engineered needles and ergonomic design make it effortless to distribute the coffee grounds evenly. Whether you're a pro barista or a home brewing enthusiast, this tool will take your espresso game to new heights. Trust me on this one! In conclusion, the WDT Espresso Distribution Tool Espresso Stirrer is an absolute must-have for any coffee lover out there. 💯 Its top-notch build quality, precision, and thoughtful design will bring joy to your coffee routine. So, don't wait any longer! Treat yourself and elevate your espresso-making experience with this amazing tool. Cheers! 🥳☕️
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Reviewed in the United States on June 12, 2023
J
Verified Purchase
Johnson Phan
Los Angeles, US
★★★★★ 5
Easy to use and affordable - great value for money!
Color: Black
I recently purchased the Nessus WDT Espresso distribution tool and I am thoroughly impressed with its performance. Assembling it was a breeze, and it came with extra needles which is always a plus. The tool is easy to clean, which is important to me because I like to keep my equipment in top condition. The price was very fair compared to other similar products on the market, making it an even better value for money. One thing that really stood out to me was the brush that collects the coffee grounds. It's incredibly easy to clean, which makes maintenance a breeze. I've had my share of espresso machines in the past, and I can tell you that this one is a keeper. I would definitely recommend it to anyone looking for a high-quality distribution tool at an affordable price
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Reviewed in the United States on December 16, 2025
A
Verified Purchase
aryn duncan
Bozeman, US
★★★★★ 5
This WDT is perfect!
Color: Black
I love this WDT! I had to look at the photos of the product to figure out how to "install" the needles. It took just a little patience to align the needles with the holes. I think the design is flawless. You can choose how many needles to use and the needle length is perfect. The needles are shorter than my previous WDT, and I have more control with the shorter needles. It's easy to slip the tool into its holder and the brush keeps the needles clean. I'm very particular, and I think this tool is perfect! I went to the Nessus page to see what other espresso tools they have because I like this tool so much, and the price is great! Unfortunately, I didn't see other tools.
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Reviewed in the United States on February 8, 2026

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