The United States Department of Justice has initiated a high-stakes civil forfeiture action aiming to seize $84.2 million in funds tied to institutional payment processing channels utilized by Tether, the issuer of the world’s largest stablecoin. Filed in the United States District Court for the Eastern District of California under Judge Dale A. Drozd, the legal complaint centers on Capstone Ltd., a Montana-registered payment processing enterprise that prosecutors allege operated as an unlicensed money services business while obscuring its operations from traditional financial institutions.
The legal maneuver highlights the intensifying regulatory scrutiny directed at the intricate pathways connecting digital asset issuers, offshore banking institutions, and domestic commercial clearing houses. As global authorities tighten their oversight of cryptocurrency liquidity corridors, the case provides a rare window into the operational mechanics behind stablecoin fiat processing, exposing vulnerabilities that could reverberate across the broader digital asset economy.
Anatomy of the Civil Forfeiture Complaint
According to court filings submitted on July 15, the Department of Justice targets assets distributed across multiple traditional banking accounts and digital asset wallets. The vast majority of the targeted funds—specifically $79.11 million—was pulled directly from a Wells Fargo Securities account held in the name of Capstone Ltd. on September 14.
Additional funds identified in the forfeiture complaint include $2.06 million held at JPMorgan Chase, $1.86 million housed in a separate Wells Fargo account, and just over $1.1 million split across two digital wallets containing USDT, the dollar-pegged stablecoin managed by Tether.
Federal prosecutors assert that Capstone functioned as an unlicensed money transmitter across at least six U.S. states. Under federal and state regulations, money transmitters are legally mandated to secure specific licenses to ensure consumer protection, verify the legitimate origin of funds, and prevent illicit financial flows. The complaint alleges that Capstone systematically bypassed these legal prerequisites by misrepresenting its core business model to commercial partner banks, falsely presenting itself as an ordinary information technology (IT) services firm rather than a high-volume payment processor moving third-party capital.
The structural architecture behind Capstone involves international entities as well. Prosecutors state that EQIBank, a digital bank licensed in the Commonwealth of Dominica, actively directed how Capstone orchestrated its financial movements and handled processing transactions. The fallout for the offshore institution has been immediate and severe; legal representatives for EQIBank have warned the court that the permanent forfeiture of these funds—representing approximately 80 percent of the bank’s total reserve holdings—could push the financial institution directly into terminal liquidation.
Key Individuals and Legal Defense Strategies
The federal government’s civil forfeiture complaint explicitly names Capstone’s principal owners, Kotaro Shimogori and Mary Jeanne Thompson. The investigation escalated significantly when agents from the Federal Bureau of Investigation (FBI) executed a search warrant at a residential property in Sacramento, California, linked to the principals.
Despite the sweeping nature of the government’s allegations, representatives for the defense have mounted an immediate pushback. Counsel for Capstone stated that the company categorically "denies any wrongdoing" and expressed an intention to navigate the judicial process swiftly to "resolve this matter quickly."

Concurrently, both Capstone and EQIBank have formally filed an innocent-owner defense within the federal proceedings. Under Supplemental Rule G for Certain Admiralty and Maritime Claims and Asset Forfeiture Actions—the governing procedural framework for such U.S. civil actions—claimants face a strict 21-day window following formal notification to contest the government’s assertions and establish a legitimate legal interest in the seized property. Unlike criminal forfeiture, which requires a prior criminal conviction of an individual defendant, civil forfeiture targets the assets themselves based on a preponderance of evidence connecting them to alleged unlawful activity, placing a unique burden of proof on claimants to demonstrate the legitimate acquisition and handling of the funds.
Tether’s Response and Institutional Exposure
As the legal battle unfolds in federal court, Tether Holdings Limited has moved quickly to distance its core operations from the alleged misconduct of its third-party service providers. In an official statement provided to Reuters, Tether acknowledged that EQIBank had historically managed certain USDT purchase and redemption transfer operations. However, the stablecoin issuer explicitly maintained that it had "no knowledge of the conduct by Capstone alleged by the Department of Justice."
To contextualize the potential financial impact, a Tether spokesperson emphasized that the total exposure represented by the seized assets accounts for less than 0.034% of the group’s total consolidated reserves. This minimal exposure sits comfortably against the backdrop of Tether’s second-quarter financial disclosures, which reported total assets of $187.75 billion alongside robust profitability metrics, including a $1.5 billion profit recorded in Q2.
The incident revives scrutiny regarding Tether’s historical banking relationships and operational transparency. The stablecoin ecosystem has faced previous regulatory reckonings concerning its fiat reserves and payment conduits. Most notably, in February 2021, Tether and its sister cryptocurrency exchange, Bitfinex, reached a comprehensive settlement with the New York Office of the Attorney General. That investigation concluded that Tether had previously maintained periods where USDT tokens were not backed one-for-one by traditional U.S. dollar cash equivalents as advertised. The settlement required both companies to pay an $18.5 million financial penalty, submit regular reserve transparency reports, and formally cease trading and operational activities involving New York-based customers.
Broader Implications for the Digital Asset Ecosystem
The legal action against Capstone and EQIBank carries profound implications for the operational mechanics of the global stablecoin market. Stablecoins like USDT serve as the primary liquidity bridge between traditional fiat currency and decentralized digital assets, facilitating billions of dollars in daily trading volume across centralized and decentralized exchanges.
To maintain a stable peg of one U.S. dollar per token, issuers rely on a complex network of authorized participants, international banking partners, and payment processors to handle massive inflows and outflows of fiat currency. When regulatory or legal enforcement actions disrupt these underlying plumbing networks, the shockwaves can destabilize regional banking partners and force issuers to rapidly sever ties with vulnerable intermediaries.
Furthermore, the case underscores the aggressive posture adopted by U.S. federal agencies toward unlicensed money transmission within the digital asset sector. As regulatory frameworks continue to evolve across North America, Europe, and Asia, payment processors and fintech startups operating on the periphery of the cryptocurrency economy face heightened compliance expectations. The deployment of civil forfeiture as a primary enforcement tool demonstrates that federal prosecutors are increasingly willing to target the financial lifeblood of suspected illicit intermediaries, disrupting cross-border capital flows even before formal criminal indictments are secured.
As Judge Dale A. Drozd presides over the preliminary motions in the Eastern District of California, the immediate focus will shift to the viability of the innocent-owner defenses filed by Capstone and EQIBank. Whether these institutions can successfully untangle their operational compliance from the government’s allegations of unlicensed activity will set a vital judicial precedent for how third-party payment processors interact with major stablecoin issuers in the years ahead.



