Dear Customer
I have experience of cryptocurrency and blockchain development with 5+years of blockchain (both public and private), Ethereum, smart contracts, ICO, tokens.. If you send me the specifications, I can build you a working demo before you decide to hire me. Base on the job description, it will just take a day or more.
Though I'm worked in blockchain over 5 years,but I am new to upwork, willing to take low price and will work hard to get good customer review.
Best Regards
Fang