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HiHello Vaccine QR Code
A vaccine credential feature integrated into the HiHello digital business card app, enabling California, New York, and Louisiana residents to create verifiable Covid-19 vaccine records
verified Jul 15, 2026 · HTTP 200
CohortClass of 2026What it is
A vaccine credential feature integrated into the HiHello digital business card app, enabling California, New York, and Louisiana residents to create verifiable Covid-19 vaccine records. Businesses can quickly scan and validate vaccination proof directly through the mobile application.
HTTP liveness
21 probes since May 23May 23Jul 15
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- May 23, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
472/4 signal families
Liveness40%1.00
Press30%no data
GitHub20%no data
Tranco10%0.68
Weighted observed activity · updated Jul 15
Cohort survival · Class of 2026weekly
550 products launched in 2026 · 100% still active
550 active0 sunset
Still active
100%
Median lifespan
4.9y