A blockchain is a dispersed public ledger ??or on the net digital database ??which contains a document of many of the transactions on a System. ??п?й?е ?а п?одавай?е на ?по?овом? ?инк? за допомого? ?оз?и?ени? ?н????мен??в copyright.US will be the leading copyright platform reliable by hundreds of thousands of consumers https://jessec332yod1.wikitron.com/user