Scan · Check · Trust
Every certificate, licence or statement you issue carries a signed QR code. Anyone can point a phone camera at it and see instantly who issued it, whether it has been altered and whether it is still valid. No app, no login.
Scanning the code opens a public page that settles every doubt a checker has.
Did this organisation really issue it? Proven by a signature inside the QR.
Has anything been changed? The signed details are compared with the record.
Is it still valid today? Live lookup: issued, suspended, revoked or expired.
Did it exist on the date claimed? Anchored daily to the Bitcoin blockchain.