How to get ExtPubKey from CoPay wallet?

[doof]

I want to provide someone my HD ExtPubKey from copay, so they can pay me to a new HD address.  On Copays wallet, I see and advanced option, but no way to export the ExtPubKey.

Can it be derived from an address itself?

[danda]

Go into your wallet settings, Advanced, Wallet Information. Find the section Extended Public Keys.

There are actually multiple xPubKey if you are using anything except a 1 of 1 wallet.

If you are using an M of N wallet with more than one xPubKey and you or your counterparty need to generate addresses in advance, you may find this tool helpful:

https://mybitprices.info/hd-wallet-addrs.html

Can it be derived from an address itself?

no.