Techniques for facilitating a digital signature occurrence associated with an object transmitted via a communication channel associated with a group-based communication platform. The object may be created by a user within either the group-based communication platform or a third-party application and transmitted to one or more other users associated with the communication channel via the group-based communication platform. The group-based communication platform may be configured to authenticate a digital signature and, based on a verification of the authenticity, associate the digital signature with the object. The group-based communication platform may cause the digital signature to be presented via an interface associated with the communication channel, such as proximate to or viewable in association with the object.