According to Odaily, Nubank, the largest digital bank in Brazil, is set to integrate the Bitcoin Lightning Network. The bank reportedly has a customer base of approximately 100 million people. The integration of the Bitcoin Lightning Network is a significant move for the bank, potentially opening up new opportunities for its vast customer base to engage with Bitcoin and other digital currencies. This development is a clear indication of the growing acceptance and integration of digital currencies in the financial sector, particularly in banking. The Bitcoin Lightning Network is a 'layer 2' payment protocol that operates on top of a blockchain-based cryptocurrency, like Bitcoin. It is designed to enable fast transactions between participating nodes and has been touted as a solution to the Bitcoin scalability problem. The integration by Nubank, therefore, represents a significant step towards improving transaction speeds and efficiency for its customers. Further details about the integration process or when it will be completed have not been disclosed.