The bedrock of Bitcoin self-sovereignty is having control over your private keys. Without this, in one way or another, you are relinquishing control of your money to someone else. “Not your keys, not your coins” as the saying goes. A counter-intuitive aspect of Bitcoin for people who aren’t familiar with the technical underpinnings of it is “where” your Bitcoin actually is. When people think of a wallet, they think “the place where I keep my money.” Your bitcoin wallet doesn’t actually “hold” your Bitcoin, it just stores your private keys. Your Bitcoin is just entries of data on the blockchain hosted by everyone participating in the network. When you go to spend your bitcoin, what you are actually doing is proposing an update to the data stored on the blockchain. A private key is how the protocol ensures that you, and you alone, can authorize an update to the blockchain that spends your Bitcoin.
So what are your private keys? Just very large numbers. Extremely larg
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