It is in fact one of the key functionalities in Bacen for carrying out PIX in the SPI (instant payment system) within the SPB (Brazilian payment system),
and a great starting point for our system.

DICT stands for Directory of Transactional Account Identifiers
We would start from the updated api at https://www.bcb.gov.br/content/estabilidadefinanceira/pix/API-DICT-2.0.1.htm
taking its main functionalities: