A parser that creates a limited iOS / Android / Google Contacts compatible vCard v3, as well as an Outlook compatible .csv.
It also includes and extended schema for a Schema.org Person to include properties for describing cryptocurrency public keys & addresses.
There is no official support for the "KEY" property in vCard v3, and no wide support for vCard v4.
In addition, there is no support in Schema.org for a cryptocurrency key or address.
Current datastructure is taken from a new standard on SpaceDatatStandards.org, the UPM