As an example, if you buy a copyright, the blockchain for that digital asset will without end explain to you as being the operator Until you initiate a promote transaction. No you can go back and change that proof of possession. ??п?й?е ?а п?одавай?е на ?по?овом? ?инк? за допомого? https://trevordwofx.bcbloggers.com/29221322/copyright-options