Blockchain is a distributed ledger of transactions, i.e. a database, in which data is stored in blocks that form a chain and are linked to the previous block using cryptographic hashes. Business wise it is best-known as a network on which cryptocurrencies operate, but it has been gaining popularity due to its unique characteristics that allow its application in various industries. Blockchain technology offers a combination of features that address key challenges in today's business environment, making it a very attractive technology for companies looking for a safe, efficient and reliable business. Cryptocurrencies are digital currencies that are designed as a medium of exchange on the internet, but they differ from fiduciary currencies because they use the decentralized nature of blockchain technology and are not under the control of a central authority. This paper explores the link between blockchain technology, cryptocurrencies and sustainable business practices, describing their impact on the modern economic environment. The link between blockchain and sustainability is explored through its business applications, which include blockchain as a service (BaaS), tokenization, digital identity management, transparency in supply chains and the emergence of decentralized autonomous organizations (DAOs). The perception of the use of blockchain technology in business and sustainable development is shown through the analysis of the research conducted for the development of this paper.