Bitcoin breaking the $70,000 level serves as a cautionary signal for additional weakness.

Major cryptocurrencies are easing even as Asian equity markets post mild gains, with traders weighing renewed quantum computing concerns, shifting ETF allocations and the possibility that bitcoin’s broader uptrend is losing steam.

Bitcoin (BTC) has slipped back under $68,000 after failing to sustain a push above $70,000 earlier in the week. Monday’s breakout attempt quickly attracted sellers, driving the price down toward $67,000. By early Wednesday, bitcoin was hovering near $68,000 — little changed on the day but now trading below what had served as short-term support.

That development carries technical weight. The $68,000–$70,000 range had functioned as a base throughout the first half of February. A decisive move below that band increases the risk that rallies will be sold into rather than extended. If $67,000 gives way, attention is likely to shift toward $65,000, with $60,000 as a potential next support zone.

Over the past week, bitcoin, ether and BNB have each declined by up to 3%. In contrast, smaller-cap tokens such as Zcash’s ZEC and Cosmos’ ATOM have gained as much as 20%. Still, market history suggests that sustained altcoin strength is difficult when leading assets are under pressure.

“The decline of the largest coins is an ominous sign for smaller ones, as it may soon pull them down with it at an accelerated pace,” Alex Kuptsikevich, chief market analyst at FxPro, said.

On-chain data from CryptoQuant indicates the market has entered a stress phase, though it has not yet experienced the scale of realized losses that typically mark a definitive cycle low — suggesting the correction may not be complete.

Adding to investor unease, discussion around quantum computing risks has resurfaced, with some market participants questioning long-term cryptographic security, even as developers argue that any material threat remains far off.

Meanwhile, Adam Back, CEO of Blockstream, criticized a proposed BIP-110 update intended to reduce network spam, warning that changes to transaction standards could create reputational complications.

Institutional positioning is also evolving. Harvard University’s endowment reduced its bitcoin ETF exposure by more than 20% in the fourth quarter, though the allocation remains its largest publicly disclosed crypto investment.

Outside the digital asset space, Asian equities advanced modestly during thin Lunar New Year trading. The MSCI Asia Pacific Index rose 0.6%, led by gains in Japan, while U.S. futures edged higher as recent AI-related volatility subsided.

For bitcoin, the technical picture remains decisive. A sustained move back above $70,000 would restore upside momentum. Another rejection, however, could increase expectations for a deeper retracement.