Another remarkable graph.

This figure shows a spectrogram of Bitcoin’s price, expressed in log–frequency and log–time coordinates.
In this representation, the log-periodic harmonics appear as straight lines because they are constant in this transformed space. In linear time, those same components would stretch out and appear as decaying structures, which is why they are harder to identify in a standard spectrogram.
Notice the strong red band concentrated around the lowest fundamental frequency. This is clear evidence of a persistent signal in the price dynamics at that specific log-periodic frequency.
This provides yet another confirmation of the existence and stability of the primary log-periodic harmonic.
Higher-order harmonics are also present. They are weaker and less pronounced, but still detectable in the data, reinforcing the structured, non-random nature of Bitcoin’s price evolution.