Can tarpan be performed online or remotely?

Yes. Prayag Pandits offers live-streamed tarpan at Prayagraj, Gaya, Varanasi, and Haridwar. A family member abroad provides the ancestor name and gotra; the pandit performs the complete tarpan vidhi at the sacred site and transmits live video. This has the same scriptural standing as in-person participation by a proxy.