Sentbe provides a way of cheaper, faster, simpler overseas remittance services. Total market size of remittance of Korea is about USD 40 billion. But overseas remittance via banks, the traditional way, is expensive, slow, and complicated. Sentbe utilizes Bitcoin system to eradicate concerned banks such as remittance bank, mediation bank, receiving bank. By this system, customers can use cheaper, faster, and simpler overseas remittance services.