CNBC: Bitcoin's biggest upgrade in four years just happened – here's what change
s.
[1]https://www.cnbc.com/2021/11/14/bitcoin-taproot-upgrade-what-it-means-for-inv
estors.html

References

   1. https://www.cnbc.com/2021/11/14/bitcoin-taproot-upgrade-what-it-means-for-investors.html