Mining computers select pending transactions from a pool and check to ensure that the sender has sufficient funds to complete the transaction. This involves checking the transaction details against the transaction history stored in the blockchain. A second check confirms that the sender authorised the transfer of funds using their private key.
Wavelet coherence plots as above highlight areas in the time-frequency space where the two series co-move. The warmer the colour, the higher the coherence (which can be interpreted as correlation) at that location in the time-frequency space; the colours used in this work range from dark blue (0, no coherence) to yellow (1, strong coherence). Statistically significant areas of coherence are surrounded by a thick black line.

A cryptocurrency is, most simply, a digital asset. It is called a currency because it was created to work as a medium of exchange in the same way that we use fiat currencies now.
Bitcoin’s (BTC) price hit another all-time high at $69,000, while Ether (ETH) continued its long slog toward $5,000 after reaching a new high at $4,868 earlier on Wednesday. Shortly after hitting this fresh milestone, however, traders began taking profit, leading to a nearly $7,000 drop, which plunged BTC’s price below $63,000.