It seems doable, but it also seems like a solution to a set of already solved problems, with a chain of new dependencies that require global acceptance of new infrastructure.
The reason email works is because it pre-dates ubiquitous Internet and is something everyone has.
That said, the public PGP key I generated in 1994 is already in published keystores, can verify my email address, and be shared as a QR code. It even has a recognizable visual thumbprint that works similar to your generated art.
The downside to it is that despite being around since 1993, PGP and OpenGPG never became ubiquitous for this purpose, so even though it solved these issues, it became a curiosity for identity management instead of the de-facto method.
It works though, as long as everyone involved has the tools needed.