Electrum 3.0 is out and the addresses are starting with bc1 apparently. I have a hardware wallet in the other hand where SegWit is supported too but the addresses are starting with 3 instead. What are the differences and are they compatible between each other (including the old addresses). Could I receive/send without having to worry?
Didn't try but I could say that there are many persons in my contact who are using the same type of addresses that start with 3.
Initially, I thought that they are multisig addresses and I asked them whether it is or not, but they didn't tell me anything except that they are using the same address for every transaction and not facing any problems using the same and it's not including mixed transactions just like we see in exchange addresses. Even I would like to know if such addresses are multisig or not?
"3" is a script hash prefix. If I recall correctly encrypted paper wallets address must start with a "3" in addition to the multisig starting with a "3".