In the dynamic world of blockchain, an actor is not limited to a single role or function. Indeed, it stands for any entity—be it a person, group, or device—that can engage in activities within a network. This broad definition underscores the inclusive nature of blockchain technology. By allowing diverse participants to interact, blockchain ecosystems thrive on collaboration and innovation. Whether it’s sending transactions, validating blocks, or contributing to governance decisions, each actor plays a pivotal role in maintaining the network’s integrity and efficiency. Thus, understanding the concept of an actor is crucial for grasping how blockchain systems operate and evolve over time.