Add coin train - live demo

[satoshkey]

Send the train on a journey ! Live demo. Thanks in advance for considering to add satoshkey payToIo to the list of awesome lnurl things !

https://user-images.githubusercontent.com/106029426/174245385-13841fde-b735-4e70-84fd-c16b56abc667.mp4

[fiatjaf]

This is cool, but how is it using LNURL?

[fiatjaf]

I see you have a server that triggers stuff on an electronic board. I suggest that you turn the executecommand endpoints into lnurlpay-capable HTTP endpoints, so users can print static QR codes that trigger the device.

[satoshkey]

Many thanks for your suggestion! We find it handy for users to print the static QR code from e.g. LNbits LNURLp extension, like in the demo. The configured webhook URL is then processed by the device. This minimizes the attack surface and keeps our server simple and generic. We come from replacing traditional coin machines with crypto currency payments and LNURL made it a lot easier! Do you see an advantage of exposing lnurlpay-capable endpoints from the device over processing the webhook ? thanks in advance.

[fiatjaf]

No, I think your setup is great as it is.

The problem is that the video doesn't show the scanning of the static QR code in action!

[satoshkey]

Agree. We'll change that.

[fiatjaf]

Did you post this to Twitter? So I can retweet it.

[satoshkey]

Much appreciated. Tweet.

and the updated video.

https://user-images.githubusercontent.com/106029426/174483989-cb0b4e67-81ac-4bf6-98a3-8e9bd9bf2f85.mp4

[fiatjaf]

Awesome, thanks!

[fiatjaf]

By the way, the link on https://satoshkey.com/ doesn't point to lightning:LNURL1... as it should. Instead it points to https://legend.lnbits,com/... and so it doesn't work on wallets.