Crypto: People and Power
When Bitcoin and other cryptocurrencies first appeared well over a decade ago, few people could have imagined how widespread they would become.
Now, these various forms of digital money are in common use - if not yet universally understood.
But where exactly do they come from, who uses them and what - for better or worse - might be the long-term consequences?
Al Jazeera's People & Power sent reporter Rory Challands in search of answers.
The video premiered on July 5, 2022.