I’ll provide the only serious answer here. SG Gov uses ethereum for certificate verification. One of the many certs that are on there is the covid19 vaccine certificates. It’s not exclusive to covid19 vaccine certs, but at least it’s tangentially related.
I’ll provide the only serious answer here. SG Gov uses ethereum for certificate verification. One of the many certs that are on there is the covid19 vaccine certificates. It’s not exclusive to covid19 vaccine certs, but at least it’s tangentially related.