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With Venmo or Paypal, you can see a person’s username, picture, social media accounts, email addresses, or other identifying information. Oracles have the ability to address the problem of crypto addresses not having any real-world identifying information, making it safer to pay someone. Blockchain domains are usernames for receiving crypto. They are stored by users in their cryptocurrency wallet, instead of by registrars like Godaddy. You can use them for decentralized websites, but you can also use them to receive money.