A blockchain is usually a distributed public ledger ??or on-line electronic databases ??which contains a document of each of the transactions on the platform. Some cryptocurrencies share a blockchain, though other cryptocurrencies run on their own individual blockchains. ??п?й?е ?а п?одавай?е на ?по?овом? ?инк? за допомого? ?оз?и?ени? ?н????мен??в} https://normanx111tlc1.blue-blogs.com/profile