I got my Covid shot at CVS (which is the largest pharmacy chain in the USA) and they issued a vaccination certificate with a QR code on it. However, no regular program seems to be able to read that code. It turns out that this is a new format called Smart Health Card and it's actually a completely new URL scheme (which makes almost unreadable unless it's a very specific reader app).
Is that useful for travel at all? Do any airlines, health office, entry controls use or at least accept this as proof of vaccination?