https://www.coinbase.com/earn
https://coinmarketcap.com/earn
https://www.sec.gov/spotlight/investor-advisory-committee-2012/slides-nancy-liao-brief-intro-to-blockchain-iac-101217.pdf
https://csrc.nist.gov/CSRC/media/Presentations/Blockchain-Overview-FCSM-final-Andy-R/images-media/Blockchain%20-%20Overview-%20FCSM-final%20-%20Andy%20R.pdf
By Irving Norehem Llamas Covarrubias