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Across
  1. 4. A place where a particular product or service is bought or sold
  2. 5. A type of electronic card which is used for transactions made online through a computer or a smartphone.
  3. 8. An occasion when someone buys or sells something
  4. 9. The large system of connected computers around the world which people use to communicate with each other
  5. 10. A platform that enables a shared record of information that is maintained and updated by a network of computers
Down
  1. 1. A virtual world where humans, as avatars, interact with each other in a three-dimensional space that mimics reality
  2. 2. A digital character that represents you in a computer-generated world
  3. 3. A digital or virtual currency that is stored on a blockchain
  4. 6. The buying and selling of goods and services over an electronic network
  5. 7. The virtual world made possible by computers and the internet