https://www.ifs.org.uk/uploads/publications/bns/BN243.pdf
https://www.brookings.edu/wp-content/uploads/2018/04/es_20180416_digitalcurrencies.pdf
https://www.propublica.org/article/how-private-nonprofits-ultrawealthy-tax-deductions-museums-foundation-art
https://hodlfm.com/regulation/eu-wealth-registry/