Circulation is a period of time between Promissory note listing and execution. During the circulation period, users can issue, trade, settle, and repay listed Promissory notes. 

For example, there are four TKP Promissory notes with different maturity days. When one of them matures, Tokpie exchange executes it and list a new one. So there are always four TKP Promissory notes available in circulation.

Promissory note title (Сode)

Maturity date

TKP_PN_15_Mar_2020

March 15, 2020

TKP_PN_15_Jun_2020

June 15, 2020

TKP_PN_15_Sep_2020

September 15, 2020

TKP_PN_15_Dec_2020

December 15, 2020