The Bitcoin network is secured by electricity and math. (Also: Yes, to be clear there are projects that already exist that create ultra-fast payments and smart contracts on top of the Bitcoin network. After all, you can spend a dollar on the Ethereum network using a USD-backed stablecoin, so why reinvent the wheel? )Here's a chart of Ethereum, Bitcoin, and Litecoin going back to the summer of 2017. The stuff tech people are hyped about right now is radically different from Bitcoin, in both its assumptions and in its purpose.

Source: Economic Times June 07, 2021 10:52 UTC