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Samourai wallet? Can I use the same address to get paid more than once? Hope it's not the same as Blockchain.info's addresses, as they change once we use it.
You can always reuse addresses infinitely as long as you have the private key.
Wallets generate new addresses so people looking at the blockchain will not be able to track your transactions easily.
No matter how many addresses you use you'll always be able to control the funds if you used the same wallet to create the address.
Can I use those addresses? Once again, why won't I be able to sign message through these addresses?
Yes, you can use them.
You can't sign messages with Green Address or Greenbits because they are multisig addresses, meaning GreenAddress holds one set of private key while you have the other.
I asked that question for SegWit addresses, not the one that's probably compromised, i.e.; 19RidcN96xgXkWi8gDwxcmbjjdjfrxpxvv
You can reuse any address (segwit or legacy ) as much as you like as long as you have the private key.
Yes, that transaction was done by me only. And I checked the source, which is why I used my private key there when I was online. I believe I should not receive any coins over that address anymore but should keep it to sign messages. Can you answer my queries told in the same comment?
In bitcoin it's best to be paranoid about security so don't use that address anymore and consider it compromised.
If it's really compromised then whoever holds the private key can sign messages also.