Silvergate Shut SEN, Severing a 24/7 Crypto Dollar Rail

Silvergate Bank announced on March 3, 2023 that it had discontinued the Silvergate Exchange Network, its round-the-clock payment system for digital-asset businesses. The decision took effect immediately and removed a specialized channel through which participating institutional customers could transfer U.S. dollars between their Silvergate accounts outside conventional banking hours.

The bank characterized the action as a risk-based decision. It also said all other deposit-related services remained operational. That qualification was important: the March 3 announcement closed SEN, but it did not state that Silvergate Bank had entered liquidation, stopped honoring deposits or ceased every payment service.

SEN’s disappearance nevertheless represented a significant contraction in the infrastructure connecting continuously traded crypto markets with the regulated banking system. Exchanges, trading firms and other enrolled customers could use the network to reposition dollars at any hour without waiting for a conventional wire window. Removing that capability increased dependence on ordinary banking schedules and alternative providers.

A flagship network under pressure

Silvergate had described SEN as central to its institutional digital-asset business. In a January 17 earnings call, the company reported that the network processed $117 billion of transfers during the fourth quarter of 2022, 4% more than during the preceding quarter. Silvergate also said SEN had operated continuously, 24 hours a day and seven days a week.

Those figures were company-reported measurements for the three months ended December 31, 2022. They were not an independent market-wide estimate, and they did not disclose how much volume remained on SEN by March 3. Several prominent crypto companies had already begun restricting their use of Silvergate after the bank disclosed worsening financial uncertainty.

The significance of the shutdown therefore lay in both scale and timing. A network that had recently carried substantial institutional dollar flow was being withdrawn just as customers were reassessing whether to maintain banking relationships with its operator.

The warning that preceded the shutdown

Silvergate’s March 1 filing with the Securities and Exchange Commission established the immediate financial context. The company said it could not complete its annual report for the year ended December 31, 2022 by the prescribed deadline and did not expect to file it by the March 16 extension date.

Silvergate disclosed that it had sold additional debt securities during January and February 2023, primarily while repaying advances from the Federal Home Loan Bank of San Francisco. It expected additional losses from those transactions to weaken regulatory capital ratios and said the company and bank could become less than well-capitalized.

Management was also evaluating whether subsequent events affected Silvergate’s ability to continue as a going concern for the 12 months following issuance of its financial statements. That language described an unresolved accounting assessment. It did not, by itself, establish insolvency or a completed decision to close the bank on March 1.

By March 3, however, SEN had moved from a business line under pressure to a discontinued service. Contemporaneous reports captured Silvergate’s website notice and confirmed that the decision was announced after regular U.S. equity trading had ended.

What the March 3 record established

The shutdown did not prevent cryptocurrency networks from processing transactions, and it did not eliminate every dollar-transfer option available to digital-asset companies. Its effect was narrower: Silvergate customers lost a bank-operated, always-available internal settlement channel designed for institutions trading in markets that never close.

The surviving evidence does not quantify how much payment activity was delayed, rerouted or abandoned after the announcement. It also cannot isolate a defensible cryptocurrency price reaction from the bank’s March 1 warning, customer departures and other market developments occurring during the same period.

Later context

On March 8, 2023, Silvergate Capital announced that it intended to wind down Silvergate Bank and pursue voluntary liquidation. That later decision confirms the seriousness of the March 3 shutdown, but it was not yet part of the known outcome when SEN was discontinued.