Key Takeaways
- • Orionx, a Chilean cryptocurrency exchange backed by Tether, is permanently shutting down after a forensic audit discovered over $7 million in customer assets moved to external wallets outside the exchange's control.
- • The custody discrepancy was identified on August 27, 2026, when Chief Operating Officer Thomas Mac Millan detected a "significant mismatch" between balances recorded in Orionx's systems and assets actually held in custody across Bitcoin, Ether, XRP, and Polygon.
- • The exchange filed a criminal complaint alleging that assets were transferred out of Orionx's custody between 2018 and 2021 to accounts on other cryptocurrency platforms, though the specific timing and circumstances of the transfers remain unclear.
- • Tether led Orionx's Series A funding round just 15 months prior to the shutdown, as part of its strategic expansion of digital asset adoption in Latin America, now representing a significant setback for that initiative.
- • Withdrawals have been temporarily suspended while the company prioritizes returning as much customer assets as possible, with operations conducted under Chile's Fintech Law compliance framework.
Summary
Orionx, a Chile-based cryptocurrency exchange backed by USDt stablecoin issuer Tether, announced permanent closure following the discovery of a substantial custody shortfall. A forensic audit commissioned by the exchange found that more than $7 million in custodial assets had been transferred to wallets outside of Orionx's management and control. The company statement, shared on X on September 4, 2026, indicated that "our sole priority now is to return as much of our clients' assets as possible," while acknowledging temporarily suspended withdrawals.
The custody gap surfaced during an internal compliance review conducted in 2025 as part of Orionx's efforts to comply with Chile's Fintech Law. On August 27, 2026, Chief Operating Officer Thomas Mac Millan identified a "significant mismatch" between balances recorded in the exchange's internal systems and the actual assets held at designated custody addresses. This prompted an internal investigation followed by an external forensic audit that compared onchain-verifiable transaction data against company records. The audit confirmed that recorded balances exceeded actual holdings across multiple digital assets, including Bitcoin, Ether, XRP, and Polygon.
Orionx filed a criminal complaint alleging that the missing assets were transferred out of the exchange's custody between 2018 and 2021 to accounts on other cryptocurrency platforms. However, the company's public announcement did not specify the exact timing of the transfers or the initial discovery mechanism that led to the audit process. The closure marks a significant reversal for Tether's Latin American expansion strategy, as the stablecoin issuer had led Orionx's Series A funding round just 15 months earlier to support digital asset adoption in the region. This incident underscores ongoing operational and compliance challenges within regulated cryptocurrency exchange infrastructure in emerging markets.
The custody gap surfaced during an internal compliance review conducted in 2025 as part of Orionx's efforts to comply with Chile's Fintech Law. On August 27, 2026, Chief Operating Officer Thomas Mac Millan identified a "significant mismatch" between balances recorded in the exchange's internal systems and the actual assets held at designated custody addresses. This prompted an internal investigation followed by an external forensic audit that compared onchain-verifiable transaction data against company records. The audit confirmed that recorded balances exceeded actual holdings across multiple digital assets, including Bitcoin, Ether, XRP, and Polygon.
Orionx filed a criminal complaint alleging that the missing assets were transferred out of the exchange's custody between 2018 and 2021 to accounts on other cryptocurrency platforms. However, the company's public announcement did not specify the exact timing of the transfers or the initial discovery mechanism that led to the audit process. The closure marks a significant reversal for Tether's Latin American expansion strategy, as the stablecoin issuer had led Orionx's Series A funding round just 15 months earlier to support digital asset adoption in the region. This incident underscores ongoing operational and compliance challenges within regulated cryptocurrency exchange infrastructure in emerging markets.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.