A diligence report created by a client of the Master bank indicates that the institution raised over R$ 5 billion through financial letters in recent years. This document compiles information gathered during in-person visits aimed at verifying the financial security of investments made. Notably, the figure for these financial letters was disclosed during a meeting with Master, occurring less than six months prior to its liquidation by the Central Bank of Brazil.

The report's figure substantially exceeds the R$ 2.3 billion discovered by the Federal Police during their investigations. Moreover, on May 28, 2025, managers from Amazonprev — a government agency from Amazonas responsible for managing pensions and retirement funds for public servants in the state — visited the Master bank to confirm its financial guarantees and ensure that the bank could meet its obligations. The Amazonprev had invested R$ 50 million in financial letters issued by Daniel Vorcaro's bank, which adds a layer of complexity to the situation as it reflects institutional investment in potentially high-risk financial instruments.

This situation raises significant questions about financial oversight and the integrity of the banking operation, especially given the stark contrast between the reported figures and those surfaced by law enforcement. The implications could lead to further scrutiny of Master bank's operations and regulatory practices within Brazil’s financial sector, particularly concerning the management of public funds and investor safety during an era of increasing financial irregularities.