Was the Mayor of New York City laundering money through Signature Bank
   with NYCCoin?
   Signature Bank Faced Criminal Probe Ahead of Firm’s Collapse
   [1]https://www.bloomberg.com/news/articles/2023-03-15/signature-bank-fa
   ced-criminal-probe-ahead-of-firm-s-collapse
   US prosecutors were investigating Signature Bank (SBNY)’s work with
   crypto clients before regulators suddenly seized the lender this past
   weekend, according to people familiar with the matter.

References

   1. https://www.bloomberg.com/news/articles/2023-03-15/signature-bank-faced-criminal-probe-ahead-of-firm-s-collapse