"In 1997, Ron Rivest (one of the inventors of Public-key cryptography) proposed the use of digital lottery tickets for online micropayments. In this scheme, a

"In 1997, Ron Rivest (one of the inventors of Public-key cryptography) proposed the use of digital lottery tickets for online micropayments. In this scheme, a lottery ticket for a $10 prize with a 1/1000 chance of winning could be used to pay for 1 cent" https://twitter.com/fermatslibrary/status/1409945504474140675 https://twitter.com/fermatslibrary/status/140994550447414067...