https://www.cbs.dk/en/the-press/news/why-untraceable-cryptocurrencies-are-he...
Renwick, R., & Gleasure, R. (2020). Those who control the code control the rules: How different perspectives of privacy are being written into the code of blockchain systems. Journal of Information Technology. doi:10.1177/0268396220944406 23 pages. Monero (statistical) and Zcash (homomorphic) are first generation and just like Bitcoin (none) will die under the pointless weight of their own ever growing terabyte++ size blockchains. Come talk when you have a privacy cryptocurrency whose "blockchain" (total disk space needed regardless of what you call it) grows NOT as function of number of tx (users transactions), but only as function of number of UTXO (users accounts) in some form of state database updated by consensus over transactions and the db itself.