Bitcoin fell below $64,000 on Sunday as selling pressure spread across the broader cryptocurrency market, reversing a recent recovery that had pushed the price above $64,000 earlier in the week. The digital asset was trading at $63.8 k, down from $64.3 k in the previous 24 hours, according to market data. The dip coincided with a sharp decline in trading volume and transaction value.

In the last 24 hours, Bitcoin’s trading volume fell about 8 %, while the total value of transactions on the network hovered near $16 billion. These figures kept Bitcoin’s market capitalization at roughly $1.27 trillion, compared with a total cryptocurrency market cap of $2.18 trillion. The decline in volume and value reflected profit‑taking activity that followed a high‑profile corporate sale.

The catalyst for the sell‑off was a 32‑BTC sale by Strategy Inc., the company formerly known as MicroStrategy. Strategy’s chief executive, Phong Le, said the sale was a procedural test rather than a strategic shift. The 32‑BTC transaction represented only 0.0038 % of the company’s holdings. In the same week, Strategy raised $181 million through a share‑sale program and used $101 million of the proceeds to purchase 1,550 BTC at an average price of $65,332 per coin. The purchase increased the company’s treasury to 845,256 BTC.

The sale and subsequent purchase were described by Strategy as a tactical move to validate internal selling processes and to “inoculate the market” against anxiety over potential future disposals. The company’s net‑buyer stance was reinforced by the large purchase that followed the sale, which helped to mitigate the negative market reaction.

Bitcoin’s price recovered toward $64,000 after the U.S. Ambassador to Iran, Mike Waltz, announced that a preliminary framework for a U.S.–Iran peace deal could be signed imminently. According to prediction‑market data, the odds of a permanent deal in June rose to 37 %. The announcement reduced immediate geopolitical risk, a factor that often supports risk assets such as Bitcoin. The short‑term rally was attributed to the expectation that lower tensions could lower oil prices and reduce global risk aversion.

In a separate development, Ethereum Foundation researcher Nicolas Consigny proposed SPHINCS‑, a cost‑effective method for protecting Ethereum accounts against future quantum‑computing attacks. The proposal sparked broader industry discussion on pre‑emptive security. While Bitcoin’s 256‑bit encryption is currently considered secure, analysts note that a portion of its supply could be vulnerable under advanced quantum scenarios.

The discussion around quantum security is a long‑term, sector‑wide positive. It underscores the importance of ongoing protocol vigilance for Bitcoin and other major cryptocurrencies to maintain their store‑of‑value promise in the face of evolving technological threats.

In summary, Bitcoin’s price is currently hovering just below $64,000 after a brief recovery tied to a U.S.–Iran diplomatic announcement. Institutional activity remains strong, with Strategy Inc. continuing to accumulate BTC after a procedural sale. Market volatility persists, driven by macro‑geopolitical developments and concerns about future quantum‑based attacks. The next few weeks will likely see continued monitoring of institutional holdings, potential regulatory updates, and further discussion of quantum‑resistant security protocols.