Who is Adam Back?
Hashcash was originally designed to prevent spam and denial-of-service attacks: senders first had to solve a hash puzzle.
In Bitcoin, rewriting past blocks means redoing the proof of work for every block that follows, making tampering extremely costly.
The mining mechanism of $BTC draws on Adam Back's Hashcash idea.
Uncertainty is always present in the market, so think ahead about what you'll do if you're wrong.

#BTC

Don't treat this as a buy or sell signal.