2020-05-04 | Circular 4016The Central Bank of Brazil issued Circular No. 4016 to regulate the bookkeeping, centralized registration, deposit, and negotiation of book-entry promissory notes (duplicatas escriturais). The regulation mandates that authorized entities operate electronic bookkeeping systems with specific interoperability standards and financial settlement procedures, while requiring a formal convention to define operational rules and fee structures among participants. It establishes strict authorization requirements for bookkeepers, including minimum net worth for registrars, and sets a compliance deadline of 180 days following the convention's approval.