WTF is The Blockchain?

Mohit Mamoria has written a 3500-word guide in plain English to understanding Blockchain.

Unlike every other post on the internet, instead of first defining the Blockchain, we’ll understand the problem it solves.

Best explanation I’ve read so far.

WTF is The Blockchain? →

Speaking of Blockchain, things could go very wrong for Bitcoin on August 1st due to a chain split:

Do not trust any payments you receive after Tue Aug 01 2017 00:00:00 GMT until the situation is resolved. No matter how many confirmations the new payment says it has, it can disappear from your wallet at any point up until the situation is resolved.

Bitcoin.org: Potential network disruption →

Mining Bitcoin with pencil and paper: 0.67 hashes per day

mine-pencil-1

It turns out that the SHA-256 algorithm used for mining is pretty simple and can in fact be done by hand. Not surprisingly, the process is extremely slow compared to hardware mining and is entirely impractical. But performing the algorithm manually is a good way to understand exactly how it works.

Mining Bitcoin with pencil and paper: 0.67 hashes per day →

(via Kottke)