No, sankhe and gotra are not exactly the same.

• Gotra generally means family lineage / clan / ancestral line.
• Sankhe is usually used as a surname, family identification, or branch name in some communities.

So, sankhe may be a family name within a gotra system, but it is not always the same as gotra itself.

In Jain tradition, gotra is the more general term for lineage, while names like Sankhe can be part of the family’s identification.

If you want, I can also explain this in simple Hindi/Gujarati.