Bitcoin dropped below $79,000 on Tuesday as broad crypto market weakness swept across all major assets, though most tokens still retained gains for the week. The selloff reflects mounting pressure from Federal Reserve rate hike expectations, with traders currently pricing a 60% probability that the Fed will raise rates at its next meeting.

Zcash led the losses among major cryptocurrencies, recording steeper declines than the broader market. This divergence matters because Zcash typically trades independently from Bitcoin and Ethereum, making its outsize weakness a signal of sector-specific headwinds rather than pure macro contagion.

The Fed rate hike odds represent the real driver behind Tuesday's pullback. Traders monitoring CME FedWatch data see a three-in-five chance of an interest rate increase, a material shift that resets assumptions about monetary conditions. Tighter policy directly competes with risk assets like crypto. When the Fed raises rates, borrowing becomes more expensive, Treasury yields climb, and capital flows toward safer instruments and higher yields in traditional markets. Bitcoin and altcoins lose their appeal as investors reallocate.

Bitcoin's dip below $79,000 marks a technical break that traders watch closely. The $79,000 level served as a support zone, and breaching it signals weakening demand. However, the fact that most tokens maintained weekly gains despite Tuesday's decline suggests the selloff amounts to profit-taking rather than capitulation. Investors who rode the rally higher are locking in wins ahead of Friday's likely Fed decision.

The crypto market faces a decision point. If the Fed hikes as markets expect, Bitcoin and altcoins could face further pressure into year-end. Tightening monetary conditions historically weigh on speculative assets. Conversely, if the Fed holds or signals a pause to future hikes, the relief rally could be sharp. Crypto markets trade on Fed expectations more than actual rate moves, so messaging matters as much as the decision itself.

Stablecoin flows and on-chain activity provide hints about trader positioning. Large institutions and retail players are likely hedging bets ahead of the announcement. Some are moving to stablecoins to sit out volatility. Others are accumulating on dips, betting that Fed tightening fears are priced in and that relief comes next week.

Zcash's particular weakness warrants attention. Privacy-focused tokens sometimes track regulatory sentiment differently than mainstream cryptocurrencies. If Zcash weakness reflects regulatory concerns rather than Fed concerns, that represents a different risk. The token faces ongoing scrutiny from regulators who view privacy features as compliance challenges. Tuesday's losses might embed more than just rate hike anxiety.

The technical picture matters for traders. Bitcoin holding above $77,000 keeps the medium-term uptrend intact. A break below that level invites a retest of $73,000. Altcoins typically follow Bitcoin's direction, so Zcash's leadership in losses now could reverse once Bitcoin stabilizes.

Most traders expect clarity by Friday. The Fed announcement will settle rate hike odds one way or the other, removing a major source of uncertainty. That clarity often unlocks directional moves in crypto. Until then, expect continued volatility as positions shift and hedges get adjusted.