US Spot Bitcoin, Ethereum ETFs See $305M Inflows as Regulatory Coordination Advances

U.S.-listed spot crypto ETFs extended their streak of net inflows at the start of the week, underscoring persistent ‘institutional demand’ even as regulators in the U.S. and U.K. move to align oversight of stablecoins and tokenized finance.

On Tuesday ET, spot Bitcoin (BTC) ETFs listed in the United States recorded $244.4 million in net inflows, while spot Ethereum (ETH) ETFs added another $60.8 million, according to data cited by BlockBeats. Combined, the two categories attracted $305.2 million in one session—an indication that asset managers and allocators continue to use regulated wrappers to increase crypto exposure despite ongoing policy uncertainty in multiple jurisdictions.

The inflow dynamics arrive as traditional payment networks and stablecoin infrastructure providers accelerate consolidation. Mastercard ($MA) has completed its acquisition of stablecoin payments firm BVNK in an $1.8 billion deal, according to Bitcoin.com News. BVNK offers on-chain settlement capabilities and wallet infrastructure—components that Mastercard plans to integrate into its global payments rails as it works toward a unified settlement layer connecting fiat currencies, stablecoins, and ‘tokenized deposits’.

For market participants, the deal is another signal that major incumbents are positioning for a future where stablecoins function as a programmable cash leg across cross-border payments, merchant settlement, and treasury operations. The strategic emphasis on interoperability—rather than a single proprietary token—also reflects a broader industry pivot toward ‘multi-rail’ payment systems in which users can move between bank money and blockchain-based value with minimal friction.

Circle, one of the largest stablecoin issuers, is also pushing deeper into institutional blockchain infrastructure. The company said it will launch the public mainnet of its open blockchain network Arc on Sept. 16 ET. Arc is currently running as a private mainnet, with Circle saying more than 100 institutions and ecosystem participants have already joined.

Circle named a slate of ‘genesis validators’ spanning asset management, market infrastructure, banking, and payments, including BlackRock, DTCC, Galaxy, Global Payments, Intercontinental Exchange (ICE), Mastercard ($MA), MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation, and Visa ($V). BlackRock is expected to deploy its institutional USD Digital Liquidity Fund, BUIDL, on Arc—an important step as tokenized fund shares and on-chain cash equivalents increasingly compete with traditional short-duration instruments for institutional liquidity management.

Regulatory coordination is evolving in parallel. The U.S. Department of the Treasury and the U.K. Treasury said they will expand cooperation on digital asset oversight encompassing stablecoin regulation and tokenization, releasing a joint statement on Monday ET summarizing the outcomes of the 13th U.S.-U.K. Financial Regulatory Working Group (FRWG) meeting held in London on July 8.

The FRWG meeting was co-chaired by the two treasuries and included the Bank of England, the U.K. Financial Conduct Authority (FCA), and multiple U.S. agencies including the Federal Reserve, the Commodity Futures Trading Commission (CFTC), the Federal Deposit Insurance Corporation (FDIC), the Office of the Comptroller of the Currency (OCC), and the Securities and Exchange Commission (SEC). U.S. officials updated counterparts on the implementation status of the GENIUS Act—legislation focused on stablecoin rules—and progress on broader digital asset market structure work. The agenda also covered tokenization-related regulatory priorities, the U.K.’s digital strategy for wholesale financial markets, and the G20 cross-border payments roadmap.

The statement did not introduce binding new rules or timelines, but it reinforced the direction of travel: authorities are attempting to converge on supervisory outcomes—particularly around reserve quality, segregation, and redemption—while still tailoring requirements to domestic legal frameworks. Last month, the two countries issued a prior joint stablecoin statement through the Transatlantic Taskforce for the Markets of the Future, emphasizing that stablecoins used like money should be backed at least 1:1 by high-quality liquid assets and supported by timely redemption standards.

Elsewhere, policy and compliance pressures are also building. Reporting referenced by Odaily indicated that the CRS 2.0 upgrade is proceeding as planned, expanding the definition of financial assets to include cryptoassets, central bank digital currencies (CBDCs), and certain electronic money products. The shift is expected to strengthen cross-border tax enforcement as authorities gain broader visibility into overseas income and account-like holdings.

In Russia, President Vladimir Putin has signed a cryptocurrency regulation bill into law, according to Crypto Briefing. While details on the effective date were not confirmed in the report, the move points to continued fragmentation in global rulemaking—where major economies are codifying distinct regimes that could complicate cross-border activity and compliance for exchanges and payment firms.

In the European Union, scammers are reportedly attempting to exploit the rollout of MiCA rules by impersonating regulators or crypto exchanges and urging users to withdraw funds from unlicensed platforms after a July 1 licensing deadline, according to the Financial Times cited by PANews. The tactic highlights a recurring theme during regulatory transitions: clearer rules can reduce long-term risk, but the immediate change window often creates openings for fraud.

In the U.S., the CFTC has signaled resistance to state-level efforts to impose independent exchange regulations, arguing that derivatives oversight remains an area of federal preemption. CFTC Commissioner Mike Selig warned on X that allowing states to levy additional requirements or sanctions on exchanges could weaken the unified federal market framework and encourage a ‘race to the bottom,’ according to Wu Blockchain.

In Hong Kong, the Hong Kong Monetary Authority reiterated an “open but cautious” stance toward issuing additional stablecoin issuer licenses, according to Odaily, pushing back against market speculation about a second round of approvals around early October. The regulator said it is currently focused on supporting two licensed issuers through preparation and testing, and plans to assess early live performance and market response before offering clearer guidance on further authorizations.

Finally, structural changes are also emerging inside regulated investment vehicles. Odaily, citing Onchain Lens, reported that an Ether ETF managed by Purpose Investments recently staked 42,000 ETH—about $80 million—into the Ethereum beacon deposit contract within roughly three hours. The staked amount represents about 36.6% of the ETF’s holdings, which were reported at 114,900 ETH, adding to a growing debate over how staking yield, liquidity constraints, and custody architecture may shape the evolution of spot Ethereum ETFs.

Across markets, the throughline is increasingly clear: capital inflows are favoring regulated access points, incumbents are buying or building stablecoin rails, and regulators are coordinating on frameworks that treat stablecoins and tokenization as parts of the same emerging financial stack. The next phase will likely hinge on how quickly rulebooks translate into workable compliance standards—and whether new infrastructure can scale without compromising the redemption and settlement guarantees that institutions demand.