To help people from other countries visualize how it works, here is the technical specification for boletos from a major bank: http://www.bb.com.br/docs/pub/emp

To help people from other countries visualize how it works, here is the technical specification for boletos from a major bank: http://www.bb.com.br/docs/pub/emp/empl/dwn/Doc5175Bloqueto.pdf http://www.bb.com.br/docs/pub/emp/empl/dwn/Doc5175Bloqueto.p... (in Portuguese). The banks can make available to the retailer a machine-readable file containing all the boletos received in the last day (using Febraban's CNAB 240 format, or the older CNAB 400 format). This allows the payment confirmation to be automated.