should I put the prefix
ethereum: before the address when creating a QR-Code ?
When I read a QR-Code generated by https://www.myetherwallet.com, the prefix is missing.
But I found conflicting informations like https://jibrelnetwork.github.io/ethereum-qr-code/demo-simple.html
If I can omit it, what is it purpose on bitcoin or litecoin addresses per example ?