1. S. Nakamoto, Bitcoin: A Peer-to-Peer Electronic Cash System (2008), https://bitcoin.org/bitcoin.pdf
2. What is Cryptocurrency? Guide for Beginners (2017), https://cointelegraph.com/bitcoinfor-beginners/what-are-cryptocurrencies
US Department of Treasury FinCEN guidance FIN-2013-G001 "Application of FinCEN’s Regulations to Persons Administering, Exchanging, or Using Virtual Currencies
" https://www.fincen.gov/sites/default/files/shared/FIN-2013-G001.pdf
US Department of Treasury FinCEN guidance FIN-2019-G001 "Application of FinCEN’s Regulations to Certain Business Models Involving Convertible Virtual Currencies" https://www.fincen.gov/sites/default/files/2019-05/FinCEN%20Guidance%20CVC%20FINAL%20508.pdf
Is Bitcoin Legal? https://cointelegraph.com/bitcoin-for-beginners/is-bitcoin-legal
3. Michael J. Casey and Paul Vigna, In Blockchain We Trust (2018), https://www.technologyreview.com/s/610781/in-blockchain-we-trust/
4. Andreas M. Antonopoulis, Mastering Bitcoin (O’Reilly, 2017)
https://isidore.co/calibre/get/pdf/5328
