Common question: "What is Bitcoin ?"
One the simplest explanations I came up with:
Bitcoin is decentralized, digital money.
Like other forms of digital money, e.g. your bank account, credit card, etc, it's just numbers on a ledger.
Your balance on a ledger, like an Excel spreadsheet. But there are copies of the ledger on literally tens of thousands of computers, all over the world.
These are the big-picture properties of Bitcoin, and also what makes it different from fiat money, aka dollar, euro, yen, etc.
1β£ Bitcoin is deflationary. Your purchase power grows on the long run.
2β£ Bitcoin is permissionless. No need for banks. Anyone in the world can use it.
3β£ Bitcoin can't be seized, blocked or frozen. No one can prevent you from sending or receiving Bitcoin, whenever you want, however much you want, anywhere in the world.
That's it. Bird's eye view.