Slipping under $70,000 could open the door to further downside for bitcoin.

Large-cap cryptocurrencies are under pressure even as Asian stock markets edge higher, with traders assessing quantum computing concerns, shifting ETF flows and signs that bitcoin’s broader trend may be weakening.

Bitcoin (BTC) has fallen back below $68,000 after failing to hold a brief move above $70,000 earlier this week. The attempted breakout on Monday quickly ran into selling interest, sending prices back toward the $67,000 area. By early Wednesday, bitcoin was hovering near $68,000 — steady on the day but now trading beneath what had recently acted as near-term support.

The technical implications are notable. The $68,000–$70,000 range had provided a base through the first half of February. Losing that zone raises the probability that upward moves will face renewed selling pressure. A firm break below $67,000 would likely bring $65,000 into view, with $60,000 as a potential next downside target.

Over the past seven days, bitcoin, ether and BNB have each slipped by as much as 3%. Meanwhile, some smaller tokens — including Zcash’s ZEC and Cosmos’ ATOM — have rallied as much as 20%. Still, history suggests that sustained altcoin strength is difficult when major tokens are underperforming.

“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,” said Alex Kuptsikevich, chief market analyst at FxPro.

Data from CryptoQuant indicates the market has entered a stress phase, though it has yet to experience the heavy wave of realized losses typically associated with a definitive cycle bottom — suggesting further downside cannot be ruled out.

At the same time, renewed discussion around quantum computing has unsettled some investors concerned about long-term cryptographic risks, even as developers argue that practical threats remain years, if not decades, away.

In the policy arena, Adam Back, CEO of Blockstream, pushed back against a proposed BIP-110 update aimed at curbing network spam. He warned that altering transaction standards could introduce reputational challenges for bitcoin.

Institutional flows are also shifting. Harvard University’s endowment trimmed more than 20% of its bitcoin ETF exposure in the fourth quarter, though the allocation remains its largest publicly disclosed crypto holding.

Outside digital assets, Asian equities posted modest gains in thin Lunar New Year trading. The MSCI Asia Pacific Index rose 0.6%, led by advances in Japan, while U.S. futures ticked higher as recent AI-related volatility eased.

For bitcoin, the technical outlook remains pivotal: a sustained reclaim of $70,000 would revive bullish momentum, while another rejection could strengthen the case for a deeper correction

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