As an example, if you purchase a copyright, the blockchain for that digital asset will for good show you as the owner Until you initiate a sell transaction. No you can return and alter that evidence of ownership. То?г?й?е е?ек?ивн??е, вико?и??ов???и на?? ав?ома?изован? ???а?ег?? ??легко, ?видко й над?йно , https://alexu640ins4.wikipresses.com/user