How Blockchain works, and how it powers Bitcoin

Here are three links worth your time:

An interactive intro to Blockchain, the distributed database that powers Bitcoin (18 minute watch)
Material Design and the Mystery Meat Navigation Problem (8 minute read)
The Right Way to Test React Components (13 minute read)

Bonus: GitLab published a full timeline of what happened when one of their engineers accidentally deleted their production database (3 minute read)

Thought of the day:

"Schrödinger's Backup: the condition of any backup is unknown until a restore is attempted." — Nixcraft

This GitLab-related meme by cnewmanJax2012

Happy coding!

– Quincy Larson, teacher at freeCodeCamp