This whitepaper is for historical reference only. Some content might be outdated and some links might not be available.

# Document revisions
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| Change | Description | Date | 
| --- |--- |--- |
| [Whitepaper updated](#document-revisions) |  Updated for technical accuracy. | May 21, 2021 | 
| [Whitepaper updated](#document-revisions) | Added usage of HTTPS. | February 1, 2019 | 
| [Initial publication](#document-revisions) | Whitepaper published. | May 1, 2017 |