XPAY KNOWLEDGE
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Digital assets and currencies
Understand assets, networks and trading mechanics with sources you can check.
Trading basics
Calypso (electronic ticketing system)
Calypso is an international electronic ticketing standard for microprocessor contactless smart cards, originally designed by a group of transit operators from 11 countries including Belgium, Canada, France, Germany, Italy, Latvia, México, Portugal and others. It ensures multi-sources of compatible products, and allows for interoperability between several transport operators in the same a
Securities & exchangesTim Rose-Richards
Thomas Essery "Tim" Rose-Richards (6 June 1902 – 7 October 1940) was a British racing driver and Second World War pilot.