Its not quite a vaccine passport but some states have a public registry of vaccinations where you can sign-up to retrieve your records. For example, if you live in Arizona, Louisiana, Maryland, Mississippi, North Dakota, Washington, West Virginia you can view your immunization record on the MyIR portal. It shows your name, date of birth and the dates when you’ve received your vaccine shots – including vaccines other than COVID. In theory you could use this to prove your vaccination status to someone who doubts your CDC card as being legitimate.
If vaccine passports are ever required in practice in the US, I presume that the local governments will scramble to start printing/generating them out. Until then the New York Excelsior pass is the only existing solution.
If you were vaccinated in New York, you can get an Excelsior Pass.
What is Excelsior Pass?
Excelsior Pass provides secure, digital proof of COVID-19 vaccination or negative test results.
Credit:stackoverflow.com‘