Can I spend unconfirmed transactions?

Basically yes. You can spend money one block after you receive it . There is nothing built-in to bitcoin that knows anything about the arbitrary custom of waiting for six blocks in order for a payment to be confirmed. Exchanges may not let you send unconfirmed coins, but you should be able to do it with your own wallet.

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What is a Blockchain address?

A blockchain address is a unique sequence of numbers and letters and functions very much like an email address . It refers to a specific destination on the network where cryptocurrency can be sent to, and it can be used only once. The idea is to give a person a unique address every time he or she is to receive crypto.

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