Imagine Ana opens her wallet and taps RECEIVE.
A combination of letters and numbers appears on the screen, accompanied by a QR code.
Ana can share this information to receive BTC.
But there’s a question few people ask...
WHERE DO THOSE LETTERS AND NUMBERS COME FROM? HOW DOES THE WALLET KNOW WHICH ADDRESS TO SHOW?
The answer lies in a cryptographic procedure that we’ll understand step by step.
In the previous section, we learned that an HD wallet can derive numerous private keys and their corresponding public keys.