For example, if you purchase a copyright, the blockchain for that electronic asset will eternally teach you given that the proprietor Unless of course you initiate a sell transaction. No you can go back and alter that evidence of possession. ??дк?ий?е дл? ?ебе новий ??вен? ?андом? й ?озблок?й?е необмежен? https://daveyb963qxc8.wikigdia.com/user