Warrants (Tables)

12 Months Ended

Dec. 31, 2020

Warrants

Summary of warrant activity

	December 31,
	2020	2019
Warrants outstanding, beginning balance	19,421,892	34,682
Issuances	22,048,278	20,637,761
Exercises	(34,264,393)	(1,250,000)
Expirations and cancelations	(323)	(551)
Warrants outstanding, ending balance	7,205,454	19,421,892