Arthur Hayes' family office, Maelstrom, is increasing its focus on Bitcoin privacy as part of a broader push to strengthen the network's technical foundations. In its first annual report, Maelstrom said that two of the four developers supported through its Bitcoin developer grant program now work full time on open-source privacy initiatives designed to make Bitcoin transactions harder to trace. The grant program has been running for nearly two years and was launched in October 2024. Grants are issued on 12-month contracts, with monthly stipends paid in bitcoin. Maelstrom also caps "stacked" grants, limiting support to a maximum of $400,000 per developer per year. The report names Benalleng and Macgyver as working on privacy efforts, while Rkrux and Stratospher contribute to Bitcoin Core. Maelstrom frames the program as a long-term investment in Bitcoin's scalability, robustness and privacy. The report highlights two broad approaches to mitigating transaction tracking. One method lets both the sender and recipient contribute inputs to the same transaction, altering the structure so it resembles a standard transfer less closely and weakening common on-chain surveillance techniques. A second approach allows recipients to accept funds without reusing or publicly revealing addresses, targeting privacy risks linked to Bitcoin address reuse. Cake Wallet founder Vikrant Sharma told AMBCrypto that integrating Bitcoin Silent Payments and Payjoin v2 helps close a longstanding privacy gap, adding that mobile users want to transact in bitcoin without exposing prior transaction history or balance information. Privacy work is also expanding beyond Bitcoin. The report notes that Helius is acquiring Light Protocol to develop a programmable, fully on-chain privacy layer for Solana, including encrypted balances and payment features for both retail and institutional users. The move underscores how privacy upgrades are shifting from wallet-level features toward deeper on-chain infrastructure. Alongside its Bitcoin privacy push, Hayes confirmed Maelstrom has sold its entire Zcash (ZEC) position, citing vulnerability risk tied to the Zcash Orchard pool. He said the issue could theoretically allow forged ZEC to be minted without detection. While he views the real-world likelihood as low, he said the risk cannot be fully ruled out from a cryptographic perspective, prompting a proactive exit. Hayes added that Maelstrom could repurchase ZEC if later evidence shows the assessment was incorrect. As of the time of the report, the total market capitalization of privacy coins was about $5.1 billion, with major projects including Zcash, Monero and Dash. Reported 24-hour trading volume was roughly $3.3 billion.

MicroStrategy executive chairman Michael Saylor said the company plans to buy $9 billion worth of Bitcoin and has set a goal of building its holdings to 1 million BTC. He also said the firm intends to use Bitcoin to repay all outstanding debt, according to The Bitcoin Historian.

ChainCatcher report: Bitcoin slid from nearly $73,000 to below $60,000 before bouncing to about $63,500. The token is still roughly 50% below its all-time high near $126,000 set in October 2025. The pullback has pushed BTC into valuation bands often seen around bear-market lows, though the market has yet to show the kind of capitulation selling typically associated with a durable bottom. One headline catalyst was activity at Michael Saylor's company, Strategy. On June 1, the firm disclosed it sold 32 BTC, raising about $2.5 million to fund dividends on its preferred STRC shares. While tiny compared with its roughly 845,000 BTC position, the sale drew attention as a potential behavioral shift after Saylor's repeated "never sell Bitcoin" stance. The move may also be aimed at signaling Bitcoin's usability as a corporate treasury asset, not only a long-term hold. Macro forces also shaped price action. Earlier Iran-related tensions lifted oil prices and reinforced worries that interest rates could stay higher for longer, making BTC trade more like a high-beta Nasdaq proxy. Sentiment improved after Trump said the U.S. had effectively ended its war with Iran, officials pointed to progress toward a deal, Brent crude fell toward $85, and U.S. equities rebounded. Risk appetite was further supported by SpaceX's Nasdaq debut on Friday. The stock finished at $161, up 19% from its $135 offering price. Bitcoin's 4.7% weekly gain masks sharp swings: it dipped into levels long-term metrics describe as undervalued, stabilized without a forced-selling cascade, then rebounded as headlines turned more constructive. Market participants say a sustained reversal still depends on demand returning—steady ETF inflows, renewed spot buying, and enough liquidation of underwater positions.

Huo Xing Finance, citing SoSoValue data, reported that spot Bitcoin ETFs saw a total net inflow of $858.498 million. BlackRock's IBIT led the day with a single-day net inflow of $576.944 million, lifting its cumulative net inflow to $62.114 billion. Fidelity's FBTC followed with $180.047 million in single-day net inflows, bringing its cumulative total to $10.448 billion. As of publication, spot Bitcoin ETFs held $79.65 billion in total net asset value. The ETF net asset ratio, measured as market value relative to Bitcoin's total market capitalization, stood at 6.26%. Cumulative net inflows since launch were $53.625 billion.

Spot Bitcoin exchange-traded funds drew $85.85 million in net inflows on June 12 (U.S. Eastern Time), according to SoSoValue. BlackRock's iShares Bitcoin Trust (IBIT) led daily inflows with $57.69 million, lifting its cumulative net inflows to $62.114 billion. Fidelity's Wise Origin Bitcoin Fund (FBTC) ranked second, adding $18.0047 million on the day and bringing total historical net inflows to $10.448 billion. As of publication, spot Bitcoin ETFs held $79.65 billion in total net asset value. The group's net asset ratio stood at 6.26% of Bitcoin's total market capitalization, while cumulative net inflows since launch reached $53.625 billion.

SoSoValue data showed spot Bitcoin ETFs attracted $85.85 million in net inflows on June 12 (Eastern Time). All 12 funds reported no net outflows. Spot Ethereum ETFs registered $4.95 million in net outflows, extending the outflow streak to four consecutive sessions.

Spot crypto ETF flows diverged on June 12, with Bitcoin and XRP products taking in new money while Ethereum funds stayed under pressure. US spot Bitcoin ETFs recorded $85.9 million of net inflows for the day, according to CoinGlass. XRP spot ETFs added $2.04 million. Ethereum spot ETFs continued to see redemptions after posting a $15.89 million net outflow on June 11, with June 12 also shaping up as another negative session. The shift in Bitcoin flows stands out after the asset's ETFs recently closed a record 13-day outflow streak that topped $4.4 billion and only ended in early June. A return to inflows is being read less as routine churn and more as a tentative re-entry by institutions following an extended period of withdrawals. XRP ETFs have built $978.86 million in total net assets and $1.44 billion in cumulative inflows since their late-2025 debut. The launch came as the long-running Ripple-SEC case reached resolution, removing a major regulatory overhang. The category also saw $7.44 million in inflows on June 9, a recent high. Market watchers see XRP's steady accumulation as more consistent with deliberate allocation than momentum-driven trading. The token has largely traded in a $1.10–$1.30 range, well below prior highs, yet cumulative inflows suggest positioning that may be more durable than short-term speculation. Across crypto ETF categories, BlackRock's products continue to exert an outsized influence on flow trends, making the firm a key reference point when daily data prints. For investors, Bitcoin's single positive day is encouraging but not definitive given the scale of the preceding $4.4 billion in outflows. XRP's asset base remains small relative to Bitcoin ETFs, though the pattern of consistent inflows has kept its trajectory pointed higher despite subdued spot prices. Ethereum's sustained ETF outflows risk becoming self-reinforcing: as assets shrink, liquidity can thin, spreads can widen, and the products can become less compelling to new buyers.

SpaceX has disclosed in its S-1 registration statement filed with the U.S. Securities and Exchange Commission that it holds 18,712 bitcoins. Based on a bitcoin price of roughly $63,000, the stake is worth about $1.18 billion, placing SpaceX as the world's eighth-largest company by publicly reported bitcoin holdings. Tesla, another Elon Musk-controlled public company, is reported to hold 11,509 bitcoins, bringing the combined total for the two firms to 30,221 bitcoins. SpaceX's average acquisition cost is estimated at around $35,000 per bitcoin. (bitcointreasuries)

Metaplanet is shifting from simply holding Bitcoin to building investable products, agreeing to acquire Japanese securities firm Siiibo for $13 million to roll out Bitcoin-linked yield offerings for local investors. The transaction is scheduled to close in July. Siiibo Securities will become a wholly owned subsidiary and be renamed Metaplanet Securities. A central part of the deal is Siiibo's Type 1 Financial Instruments Business license in Japan, which allows underwriting and direct distribution of securities, including to retail clients. Siiibo also played an early role in Japan's online corporate bond market, supporting more than 100 bond issuances for over 40 companies. Chief Executive Simon Gerovich called the acquisition "the first concrete step in Project Nova," Metaplanet's long-term effort to build a Bitcoin-centric financial ecosystem in Japan supported by its crypto holdings. Data from BitcoinTreasuries shows Metaplanet holds 40,177 BTC, worth about $2.6 billion at current prices, ranking it among the world's largest corporate Bitcoin treasuries. Metaplanet has historically positioned Bitcoin as a hedge against yen weakness. The Siiibo purchase signals a move toward actively developing financial products tied to that treasury. Gerovich also cited Japan's macro backdrop as supportive for yield-oriented offerings. Japanese households hold roughly $7.4 trillion in cash and deposits after decades of low inflation, and he said recent inflation pressures have prompted savers to start looking for higher returns. With Siiibo's license, Metaplanet will be able to structure and offer Bitcoin-linked yield options directly to retail customers seeking alternatives to low-rate deposits. The move aligns with a broader push across crypto finance to meet demand for yield. Metaplanet earlier this year launched a venture arm, along with initiatives to fund early-stage companies and support open-source Bitcoin developers and educators. Elsewhere, Morpho raised $175 million to expand DeFi lending toward institutional markets, and Kraken introduced lending vaults aimed at generating Bitcoin yield. Some major Bitcoin treasury holders have also discussed building regulated, bank-like Bitcoin capital market products, while others have drawn scrutiny after selling BTC and unsettling parts of the market. Metaplanet's Siiibo acquisition underscores Japan's accelerating convergence of traditional finance and crypto. Pairing a licensed distribution platform with one of the industry's largest corporate Bitcoin reserves could broaden access to Bitcoin-linked yield products and test how much retail money shifts from cash savings into crypto-based investment offerings.