In many cases, the formation of an agreement does not require a signature. What is more, in most cases there is not even a requirement for a written agreement. As a result, an agreement is formed much faster than parties often realise (which means that they are also bound by arrangements faster than they might want). Nevertheless, the signature is of great importance in Dutch legal practice. That has everything to do with the provision of evidence in proceedings. In April 2019, the Dutch Supreme Court handed down two judgments (ECLI:NL:HR:2019:572 and ECLI:NL:HR:2019:641) that focused on signed agreements. This article will first deal with the importance of a signed agreement in the context of provision of evidence, and will subsequently discuss the essence of the above judgments. It will be concluded with a few tips.