Recorded history
More complete writing systems were preceded by proto-writing. Early examples are the Jiahu symbols (c. 6600 BCE), Vinča signs (c. 5300 BCE), early Indus script (c. 3500 BCE) and Nsibidi script (c. before 500 CE). There is disagreement concerning exactly when prehistory becomes history, and when proto-writing became "true writing" However, invention of the first writing systems is roughly contemporary with the beginning of the Bronze Age in the late Neolithic of the late 4th millennium BCE. The Sumerian archaic cuneiform script and the Egyptian hieroglyphs are generally considered the earliest writing systems, both emerging out of their ancestral proto-literate symbol systems from 3400–3200 BCE with earliest coherent texts from about 2600 BCE.
Sanskrit
The earliest known stone inscriptions in Sanskrit are in the Brahmi script from the first century BCE. These include the Ayodhyā (Uttar Pradesh) and Hāthībādā-Ghosuṇḍī (near Chittorgarh, Rajasthan) inscriptions. Both of these, states Salomon, are "essentially standard" and "correct Sanskrit", with a few exceptions reflecting an "informal Sanskrit usage". Other important Hindu inscriptions dated to the last centuries of the 1st millennium BCE, in relatively accurate classical Sanskrit and Brahmi script are the Yavanarajya inscription on a red sandstone slab and the long Naneghat inscription on the wall of a cave rest stop in the Western Ghats.