Bitcoin’s $71k rally has a problem most traders aren’t watching

Bitcoin entered the weekend hovering near $71,000, well off the previous week’s spike above $74,000, but far below the highs it touched at the beginning of the year. On price alone, the market looks pretty composed. However, underneath, its structure looks much less comfortable. Data shows spot activity fading while derivatives keep doing more of the work. Almost every day this month saw derivatives trading at roughl…