A blockchain is usually a distributed general public ledger ??or on the internet digital databases ??which contains a report of all the transactions with a platform. ??п?й?е ?а п?одавай?е на ?по?овом? ?инк? за допомого? ?оз?и?ени? ?н????мен??в copyright exchanges are electronic marketplaces that help people to order and promote cryptocurrencies https://moseleyz963ovc8.wikiconversation.com/user