I have a simple question about the Telethon API for a personal project of mine.

The project is as follows: I extracted various channel IDs and channel names from the published TGDataset, and I would like to see if these channels are still active. If so, I would like to retrieve latest information and messages of the channel. The problem is that I do not have the channels’ access hashes available in the dataset. Assuming that these are public channels, is there a way that I can do this without knowing the access hash? If not, how should I proceed to get the corresponding access hash of a channel?

Thank you so much for your time and effort. I would greatly appreciate all the help and guidance you can provide.