With the invention of blockchain, an entirely new form of digital currency came into being.

came 是动词 come 的过去式，表示"来、出现"的动作。 into 是介词，表示"进入...状态"或"成为..."。 being 是名词，指"存在、生存状态"。 came into being 是一个固定短语，字面意思是"进入存在状态"，引申为"形成、诞生、应运而生"的意思。