Which was the specialized art form developed by the Ottomans to symbolize the authority?

The specialized art form developed by the Ottomans to symbolize authority is known as "calligraphy," particularly the style of "Diwani" script. This intricate and ornate form of writing was used in official documents, royal decrees, and architectural inscriptions, reflecting the power and sophistication of the Ottoman Empire. Calligraphy was not only a means of communication but also a significant cultural expression, showcasing the empire’s artistic and intellectual achievements.