How to receive a message early on a Telegram Channel?

You can’t, sadly. All of you shall be receiving the message at the same time, should one be sent.

Why doesn’t my channel appear upon searching Telegram?

A common mistake that most do is searching for their channels using their name. Nope, that won’t do. Try searching by the username, it should work. Also, make sure it’s public!

Can I get a verification badge for my channel?

Unless you are a well-renowned corporate entity or company, no. Telegram doesn’t give around verification badges randomly, or there isn’t a set of rules to follow to get the same. You’d have to be a verified company or so to have it!