Itaú Unibanco, Brazil's largest bank, has become the first financial institution to formally launch cryptocurrency trading and custody services under new central bank regulations. The bank notified the Brazilian central bank of its crypto business on Tuesday, ahead of the October 30 regulatory deadline. The move marks a significant milestone in Brazil's institutional adoption of digital assets, as Itaú Unibanco becomes the pioneer among major banks operating within the country's newly established crypto framework.