In Jain view of time, the answer is:

In the present time‑cycle (current avasarpinī): No, Jain derasars/temples as we know them did not exist before the first Tirthankar, Bhagwan Rishabhdev.

Why?

1. “Tirth” begins with a Tirthankar

- A tirth (Jain religious ford) is established only when a Tirthankar appears, gives deshna (sermon), organizes sangh (sadhu–sadhvi–shravak–shravika), and shows the path to moksha. - Before the first Tirthankar of a time‑cycle, there is no Jain shasan (organized Jain religion) in that cycle; so there are no Jain temples dedicated to that Tirthankar yet.

1. Derasars come after Tirthankars

- Derasar means a place where the images (murtis) of Tirthankars and other Arihants/Siddhas are installed and worshipped. - Such murtis, stupas, and temples are built by devotees after a Tirthankar attains Kevaljnan or Nirvan, or in later times to remember and worship them. - So, Rishabhdev‑bhagwan first appears, attains Kevaljnan, establishes tirth, and only later, in his memory and in memory of other Tirthankars, derasars are constructed.

1. Places may exist, but not as “Jain temples”

- The physical mountains, cities, areas (like future tirth‑kshetras such as Sammed Shikhar etc.) may already exist as land, but they are not “Jain derasars” before a Tirthankar’s presence and shasan.

1. Digambar–Shwetambar view

- Both traditions agree on the basic principle: Tirthankar → Shasan / Tirth → later, temples/derasars. - There can be differences in details of history of particular temples, but not in the idea that organized Jain worship places arise after the Tirthankar, not before in that time‑cycle.

1. Across infinite time

- Jainism teaches beginningless time with infinite past cycles, each with its own 24 Tirthankars. - In earlier cycles, there were derasars for the Tirthankars of those cycles. - But in the present cycle, before Bhagwan Rishabhdev, there were no Jain derasars of our current 24 Tirthankars.

So, summarized:

• Before the first Tirthankar of this time‑cycle: no Jain derasars.
• Derasars start only after Tirthankars establish Jain shasan and devotees later build temples in their honor.