hello,how are you. i read your bid carefully.
i am c/c++, qt expert and have full experience for 10 years.
also i have good experience on bitcoin wallet so i can give you perfect result.
c/c++, qt is my top skill and i can complete your project by using c/c++, qt.
i am using from qt 3.3.8 to 5.11 till now.
i can provide most quality and high speed.
if you want to success, please contact me.
Then, I will give you good result to the proposals.
hire me.