Are you sure Liberty Reserve's wallet was Decentralized? Was it even Open Source at all?
Regards,
PrivacyG
Well, It was not a decentralized system, but rather a centralized one.
And for the OP, I think Electrum was one of the proven and tested for this matter,
Due to there are many community saw this and it became helpful to anyone who
tried it already personally.
Also Trustwallet app was proven to me as well.