CS120: Bitcoin for Developers I

The security and integrity of Bitcoin depend largely on private keys, and these keys are randomly generated large numbers. This often feels a bit insecure. You may worry that someone may coincidentally generate the same private key as you. It can be a bit difficult to comprehend the magnitude of the numbers being dealt with here. Since this is such an important piece of the Bitcoin system, let's take a few minutes to appreciate the incredible unlikelihood of generating the same private key as someone else on the network.