https://www.sec.gov/Archives/edgar/data/1574601/000157460117...
Not a legal standard. They took money from non-accredited investors in the U.S. and didn't do KYC/AML. It really isn't that complicated.
However Ethereum as a technology and platform has been making the odd inroads. The UN previously used it successfully in a project to help maintain ID's for refugees and dispersion of aid a few years ago.
Canada's currently experimenting with using it for tracking dispersion of funding and grants by the National Research Council[0] as well as experimenting with the same digital ID's (via Accenture/Microsoft) for air travel.[1]
[0] NRC Website: https://www.nrc-cnrc.gc.ca/eng/stories/2018/blockchains.html
[0] Overview article: https://globalnews.ca/news/3977745/ethereum-blockchain-canad...
[0] NRC Working Prototype: https://nrc-cnrc.explorecatena.com/en
[1] https://globalnews.ca/news/3991496/known-traveller-digital-i...
I'm optimistic that there's surely something practical out there.