Oldest historical evidence of Jainism

Here is a simple, Jain-shāstra-based view of the oldest historical evidence for Jainism:

• Textual basis (traditional view)

- Jain tradition places the teaching lineage from the 24 Tirthankaras, with Mahavira often dated around the 6th century BCE. The canonical Jain scriptures (Agamas and later комментарий) preserve these teachings. Dates for Mahavira and the earliest Tirthankaras vary between Digambar and Śvetāmbara schools, and scholars debate exact years. In short, the religious line is considered very ancient in Jain texts, but precise secular dating is not uniform between traditions.

• Earliest archaeological inscriptions and objects (historical evidence)

- Barli inscription (present-day Rajasthan): a Prakrit inscription in Brahmi script, sometimes dated to the 2nd–1st century BCE (with some earlier claims around 443 BCE). It is among the oldest Jain inscriptions attested in northwest India. - Hathigumpha inscription (Udayagiri, Odisha): dating roughly to the late 2nd century BCE to early 1st century CE, issued by the Jain king Kharavela. It is an important early source that mentions Jain institutions and public works, though it is a broad royal inscription rather than a Jain doctrinal text. - Lohanipur (Patna) torso: a 2nd century BCE polished stone statue found near Patna. Its exact religious attribution (Jain, Ajivika, or other naked ascetic tradition) is debated; some scholars connect it with early Jain art, while others remain unconvinced. It is not a definitive Jain icon but is often cited in discussions of early Jain material culture. - Early Jain bronzes and carved images (various sites) appear later and show how Jain iconography and temples developed over centuries (not the oldest evidence, but part of the growing archaeological record).

• Important caveats

- The absolute dating of these finds and texts is often debated. Different scholars assign slightly different centuries to the same artifact (especially Barli and the Lohanipur find). - There is a difference in emphasis between Digambar and Śvetāmbara traditions on dating and on how early the Jain sanghas were established in various regions.

If you’d like, I can point to a Jain-focused source that summarizes these early evidences in more detail.