1. Bitgo announces “verified by bitgo” proof of asset service. https://www.businesswire.com/news/home/20150630005466/en/BitGo-Announces-%E2%80%9CVerified-BitGo%E2%80%9D-Proof-Asset-Service#.VZKYwO1Viko
2. Bitstamp proof of reserves. https://www.bitstamp.net/s/documents/Bitstamp_proof_of_reserves_statement.pdf
3. CSBS state regulatory requirements for virtual currency activities. https://www.csbs.org/sites/default/files/2017-11/CSBS%20Draft%20Model%20Regulatory%20Framework%20for%20Virtual%20Currency%20Proposal%20-%20Dec.%2016%202014.pdf
4. Deloitte COINIA and the future of audit. https://www2.deloitte.com/us/en/pages/audit/articles/impact-of-blockchain-in-accounting.html
5. FATF travel rule: What you need to know. https://complyadvantage.com/knowledgebase/fatf-travel-rule/