How to do the most basic VC exchange using QR code?

[sondreb]

I'm working a fairly basic issuer service, I'm not planning on making it very advanced, but support the basic issuance (automatic with private key on server) and storage for later retrieval.

I'm looking around at the various specifications that have come and gone, I have also investigated multiple wallets and seeing how each of them appears to implement various protocols and patterns for QR code scanning and importing to wallets.

What is the most basic flow I can implement on the service to allow importing in a wallet? Will I need to dig into the specification for individual wallets that exists?

Is there any implementation documentation or examples available?