I saw a video on Youtube about building a virtual currency so I decided to do it by Python (cause it's easy and time-saving)
- v1.0: haven't implemented POW
- v2.0: implemented POW. Haven't distributed the record of the blockchain to everyone in the network (cause I don't even have one *shame*)
- v3.0: Using transactions with addresses and amounts instead of only amounts. Still, haven't distributed the record of the blockchain to everyone in the network
- v4.0: Created verification step to secure people's money.