Formulas for solving Diophantine equations will be published in the collection. They were received by me and were not previously known. Thus, I want to use the NFT token as a tool that would determine the ownership of the formula. Previously, when a person found a formula, it was difficult to prove who it belonged to. These are the first tokens that prove the ownership of some formula. And now we can say that this formula is mine. You can't solve all the equations. The number of equations that can be solved - that is, to obtain parametrization of their solutions - is limited. In addition, it is usually extremely difficult to do.