Depending upon the exchange, there may be benefits and disadvantages to paying with cash, credit or debit card, or bank account transfer. For instance, while credit and debit cards are among the most user-friendly methods of payment, they tend to require identification and may also impose higher fees than other methods. Bank transfers, on the other hand, typically have low fees, but they may take longer than other payment methods.
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Investopedia requires writers to use primary sources to support their work. These include white papers, government data, original reporting, and interviews with industry experts. We also reference original research from other reputable publishers where appropriate. You can learn more about the standards we follow in producing accurate, unbiased content in our editorial policy.
The public key is the location where transactions are deposited to and withdrawn from. This is also the key that appears on the blockchain ledger as a user’s digital signature, not unlike a username on a social media newsfeed. The private key is the password required to buy, sell, and trade the bitcoin in a wallet. A private key should be a guarded secret and only used to authorize bitcoin transmissions. Some users protect their private keys by encrypting a wallet with a strong password and, in some cases, by choosing the cold storage option; that is, storing the wallet offline.
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