#Proof of authentication
Bitcointalk Username: hoangvuthach
Telegram Username:@hoangvuthach
content/blog link:
1. http://hoangvuthach011.blogspot.com/2018/08/nen-tang-giao-dich-crypto-oodlebit.html
2. https://youtu.be/vKb8qB_wHQQ
3. https://youtu.be/csniewi1pCI
4. https://youtu.be/4XFA_TnZlxY
5. https://bitcoingarden.org/forum/index.php?topic=44594