# Reserve Currency
 A reserve currency is a [currency](currency.md) that is held in by [central-banks](central-banks.md) as part of their foreign exchange reserves. The reserve currency is used for international transaction between nation states.

Historical world reserve currencies have included:

1. Spanish Silver Dollar
2. Dutch Guilder
3. British Pound
4. United States Dollar

## References
1. Larue, Louis. 2020. ‘“A Conceptual Framework for Classifying Currencies”.’ International Journal of Community Currency Research 24 (1): 45–60.
1. Hockett, Robert C. 2019. ‘Money’s Past Is Fintech’s Future: Wildcat Crypto, the Digital Dollar, and Citizen Central Banking’.
1. Eich, Stefan. 2018. ‘The Currency of Politics’. The Political Theory of Money from Aristotle to Keynes.
1. Varoufakis, Yanis. 2021. ‘What Is Money, Really? And Why Bitcoin Is Not the Answer (Even If Blockchain Is Brilliant & Potentially Helpful in Democratising Money)’. Yanis Varoufakis (blog). 2 August 2021. https://www.yanisvaroufakis.eu/2021/08/02/what-is-money/.
1. Steele, Graham. 2021. ‘The Miner of Last Resort: Digital Currency, Shadow Money and the Role of the Central Bank’. Technology and Government, Emerald Studies in Media and Communications, Forthcoming.