That's the "how" part, not the "what". What's the killer app implemented using that network? What do we do with it?
A replacement for gold is one.
Gold is relatively stable and has physical backing. BTC does not.
Up to 4% of China's gold reserves could be fake. Gold fraud article: https://economictimes.indiatimes.com/news/international/worl...
Bitcoin is open source and completely auditable in an instant.
As the price of gold goes up, the quantity supplied goes up. Bitcoin's issuance protocol is fixed and unchangeable unless the network agrees.
The cost of securing or transporting $1b of gold bars is magnitudes higher than the cost of securing $1b of Bitcoin.
