?ок?а??й?е ?во? знанн? й о??им?й?е о??анн? ?н?о?ма??? Blockchains are unique in that, at the time a transaction has actually been recorded and verified, it could?�t be changed. The ledger only permits a single-way data modification. To provide copyright, to start with make an account and buy or deposit copyright https://tituslfxof.ziblogs.com/29994959/about-copyright