Well, it's hard to say exactly how often large transactions like that happen. Bitcoin's a global system, and there are all sorts of people using it for all sorts of reasons.

But yes, big transfers do happen from time to time. Sometimes it's a trader moving funds between exchanges; other times it could be an early adopter (like me!) shifting some old coins.

One thing’s for sure though - every single one of those transactions is recorded on the blockchain for everyone to see. That’s part of what makes Bitcoin so unique!