Method for providing virtual keyboard service that pays cryptocurrency reward and apparatus using the same

A method for providing a virtual keyboard service, comprising:

• obtaining, by a computing device, a first keyboard non-fungible token (NFT) and a second keyboard NFT, the first keyboard NFT associated with a first virtual keyboard activated on a user terminal and the second keyboard NFT associated with a second virtual keyboard activated on the user terminal, the computing device comprising one or more processors, memory and a communication circuit configured to communicate with the user terminal via a network;
• setting, by the computing device, a success probability of minting a third keyboard NFT by combining the first keyboard NFT and the second keyboard NFT;
• receiving, by the computing device, an attempt to mint the third keyboard NFT from the user terminal, wherein the attempt comprises:
• verifying possession of two different types of keyboard NFTs by a user of the user terminal, and
• deducting a predetermined amount of cryptocurrency from a wallet of the user to perform the minting attempt;
• minting, by the computing device, the third keyboard NFT in response to successful attempt to mint the third NFT according to the success probability;
• monitoring, by the computing device, use of a third virtual keyboard associated with the third keyboard NFT through an application executed on the user terminal;
• determining, by the computing device, a capability of the third keyboard NFT according to an attribute of the third keyboard NFT that changes depending on an amount of usage of the third virtual keyboard and an amount of usage of a word of a word NFT mapped to the user;
• mining, by the computing device, an amount of cryptocurrency corresponding to the capability of the third keyboard NFT while the third virtual keyboard is being used on the user terminal;
• and
• paying the mined cryptocurrency to the user as a reward.