$VIDT Blockchain and encryption operations in the world of crypto, especially Bitcoin, occur every four years, so major currencies such as Bitcoin, Ethereum, Solana, BNB, ADA, TRX and XRP and other digital currencies built on blockchain rules will become rare currencies and their prices will rise in the short and long term, and the blocks will move to fragmentation towards new currencies. From here, every investor must maintain his currencies in light of these upward and downward attractions. In the long term, these major currencies will become the backbone of trading in the new flexible and encrypted economy.