**6.2 Reusable data**

Recently, creative activities in Metaverse are often developed using artificial intelligence instead of real people. When artificial intelligence artists creates works, they learn about the trends and styles of the works, and then express what they learned for creation. In the past, a lot of data was used for style analysis. Now, artificial intelligence artists store the data in the distributed ledger so that it can be easily selected and reused. Acquiring more data and practicing iteratively reduces the chance of selecting the wrong data and shortens validation time.
