?лок?ейн ?оби?? благод?йн???? б?л?? п?озо?о?, е?ек?ивно? ? в?д??еж?вано? Blockchains are exclusive in that, after a transaction has been recorded and verified, it could possibly?�t be changed. The ledger only allows for a single-way facts modification. copyright exchanges are digital marketplaces that allow end users to get and provide cryptocurrencies https://helenc580azy3.wikigiogio.com/user