It can be scientifically proven that the Vedic Culture is indigenous, through the study of cultural continuity, archaeology, linguistic analysis, and genetic research.
For example, the language and symbolism found on the Harappan seals are very Vedic. We find the Om symbol, the leaf of the Asvatta or holy banyan tree, as well as the swastika, or sign of auspiciousness, mentioned throughout the Vedas. Om is mentioned in the Mundaka and Katha Upanisads as well as Bhagavad- Gita. Using modern scientific methods, such as satellite.
The Holy Asvatta tree is mentioned in the Aitareya and Satapata Brahmanas as well as the Taittiriya Samhita and Katyayana Smrti.
The pictoral script of these Harappan seals has been deciphered as consistently Vedic and termed “Proto-brahmi,” as a pre-sanskrit script.
This piece of pottery (above right) from the lowest level of Harappan excavations with pre harappan writing has been deciphered by some as “ila vartate vara,” referring to the sacred land bounded by the Sarasvati River, described in the Rig Veda.
Additionally, other archaeological finds are culturally consistent, such as the dancing girl, whose bracelets are similar to those worn by women of Northwest India today, as well as the three stone Siva Lingas found in Harappa by M. S. Vats in 1940. The worship of the Siva Linga is mentioned in the Maha Narayana Upanisad of the Yajur Veda and is still ardently practiced today.
The Vedas were maligned by early indologists because of their disagreement with their Eurocentric colonialists world view, a view which produced and depended on the Aryan Invasion Theory. The fact that the Aryan Invasion Theory has been seriously challenged recently by scholars and indologists, adds credence to the Vedas as viable, accurate and indigenous sources of information.