DESCRIPTION

Siddhaṃ or Siddhāṃ, also known in its later evolved form as Siddhamātṛkā, is a medieval Brahmic abugida, derived from the Gupta script and ancestral to the Nāgarī, Eastern Nagari, Tirhuta, Odia and Nepalese scripts. The word Siddhaṃ means "accomplished" or "perfected" in Sanskrit.

The Siddham script evolved from the Gupta Brahmi script in the late 6th century CE.

Many Buddhist texts taken to China along the Silk Road were written using a version of the Siddhaṃ script. This continued to evolve, and minor variations are seen across time, and in different regions. Importantly, it was used for transmitting the Buddhist tantra texts. At the time it was considered important to preserve the pronunciation of mantras, and Chinese was not suitable for writing the sounds of Sanskrit. This led to the retention of the Siddhaṃ script in East Asia. The practice of writing using Siddhaṃ survived in East Asia where Tantric Buddhism persisted.

Kūkai introduced the Siddhaṃ script to Japan when he returned from China in 806, where he studied Sanskrit with Nalanda-trained monks.