https://en.bitcoin.it/wiki/Technical_background_of_version_1_Bitcoin_addresses
https://www.oreilly.com/library/view/mastering-bitcoin/9781491902639/ch04.html
https://www.oreilly.com/library/view/mastering-bitcoin-2nd/9781491954379/ch04.html
https://medium.com/swlh/create-raw-bitcoin-transaction-and-sign-it-with-golang-96b5e10c30aa
https://www.freecodecamp.org/news/how-to-generate-your-very-own-bitcoin-private-key-7ad0f4936e6c/