You wrote. "The basis for the development of our smart contract lay openzeppelin.orglibraries, which provide the standard of reliability and security of executable code throughout the world. VR-token is a token on the Ethereum platform, created according to the ERC-20 standard with limited volume.". But, now the tokens are already being released on the ERC 223 or ERC 721 protocol. They are faster and safer and backward compatible with ERC 20.
Hello, dzkrb!
There are concerns that, despite the backward compatibility of ERC-223 and ERC 721 with ERC-20, the exchanges selected for listing in the future will not support tokens based on these new protocols. In 2017, this was a significant factor limiting the distribution of tokens based on ERC-223 or ERC-721. We are likely to switch to the ERC-223 protocol in case if we are sure that there are absolutely no problems with the use of tokens based on it.
Thanks for the detailed answer. You do well that thoughtfully approach this issue. Indeed, it is necessary to weigh everything, and then only decide.