0

September 12, 2017 AT 9:04 am

A Primer for Blockchain and Cryptocurrencies

Atomic Object’s Jaime Lightfoot has a good primer explaining what “blockchain” is, while primarily focusing on Bitcoin and Ethereum to highlight comparison and contrasts features at time. What I really like about “primer” articles is not only their text, but all the other things they link off to, for much extended reading and understanding. And blockchain can be one of those things too time consuming to explain, so I keep articles like this close to forward to people when necessary.

Blockchains are nothing new: Bitcoin’s blockchain was implemented in 2009, and research papers on blockchains date back to the early ’90s.

While I had heard about Bitcoin and blockchains, I didn’t fully understand them, and the gaps in my knowledge came to light when my grandma asked me to explain Bitcoin to her. This post is intended to explain what blockchains are, how they work, why someone would want to use them, and what’s coming up next.

A New Take on Money

In your everyday life, if you want to buy something, you exchange money with a business or person for the thing you want to buy. Before computing was widespread, people used physical representations of money (dollars, coins, gold). Now, we also use digital records of money.

Whether you rely on physical or digital means, you are trusting some kind of outside group to create and regulate the physical representations of money (the Federal Reserve), keep accurate bookkeeping records (banks, state and national laws on bank records, etc.), and prevent theft, double-spending, and fraud (laws, law enforcement, counterfeit protection, etc.). I’m glossing over some things here, but the point is that everyone follows the rules that external entities have made–because if someone breaks those rules, those entities have the authority to step in and act.

Cryptocurrencies have the same ideas—creation, regulation, accurate bookkeeping, and prevention of theft—but there’s no outside group to monitor them. This makes Bitcoin and other cryptocurrencies “trustless.” In other words, there is no outside group or third party that must be trusted for transactions to occur.

Read more.

And here’s a long, classroom-worthy 1.5 hour presentation by Alex Fisher on “trustless” communications and the blockchain with an emphasis on Ehtereum and its roadmap:


Check out all the Circuit Playground Episodes! Our new kid’s show and subscribe!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground”Adafruit’s Apps!


Maker Business — Lessons Learned Scaling Airbnb 100X

Wearables — ABS ABC

Electronics — When do I use X10?

Biohacking — VICE Reviews The Internet’s Top Five Nootropics

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.


Leave a comment

Adafruit has a "be excellent to each other" comment policy. Help us keep the community here positive and helpful. Stick to the topic, be respectful of makers of all ages and skill levels. Be kind, and don't spam - Thank you!

Prove you are human by reading this resistor:

0Ω+/- 5%

0
0
1
2
3
4
5
6
7
8
9

0
0
1
2
3
4
5
6
7
8
9

0
0
1
2
3
4
5
6
7
8
9

5
5
10

Prove you are human by reading this resistor:


Match the sliders on the left to each color band on the resistor.

Click Here for a new resistor image.

New to electronics? Click here to learn how to read resistor values.

Or learn to read resistors by playing Mho's Resistance!