LUD-09: successAction field for payRequest

[AxelHamburch]

Is it possible that the LUD-09 "successAction" is missing in the Android Blink App 2.2.125.30000583?
I don't get any URL displayed after payment.
https://github.com/lnurl/luds/blob/luds/09.md

This is needed, for example, so that the LNPoS also works offline.
The wallet shows a link after successful payment. On the page is then displayed a secret as a four-digit PIN.
https://github.com/lnbits/lnpos

I am currently working on an extended version.
It would be a pity if the Blink Wallet would not have this function. It is integrated in most wallets.
https://github.com/AxelHamburch/offlineLNSwitch

[nicolasburtey]

it has not been implemented as far as I know.

is there any store live on which this could be tested?

[AxelHamburch]

You can test it with this lnurlp with 1 sat

LNURL1DP68GURN8GHJ7MR9VAJKUEPWD3HXY6T5WVHXXMMD9AKXUATJD3CZ7EMHV9J5WJQH6JYH4

It is just an lnbits wallet with lnurlp extension and option succes URL.

https://legend.lnbits.com/lnurlp/?usr=0f06ac36270144b19c2d515295ce9dae

[nicolasburtey]

I mean is there a live app where I could see the benefits of this feature, or more clearly understand the use case?

I don't really understand in which context this would be useful

[AxelHamburch]

All you need to do is call up the 1 sat lnurlp with a wallet that supports LUD-09 (almost all does that) and pay the invoice. Then you see the benefit. You will be shown a URL after payment. The user only sees this if he has paid the invoice.

In the case of the offlineLNSwitch, the LNbits server then displays a 4-digit PIN. If this is entered into the device, then it can be compared with the one in the device (generated for the lnurlp). If they match, the device switches the relay. With LNPoS, the seller knows that the buyer has paid the invoice, otherwise he would not know the PIN.

[yanascz]

Another use case is the Lightning Raffle implemented by LNURL Daemon. It uses the message success action to display a raffle ticket number. You can give it a try by purchasing a 1-sat ticket using the following QR code:

It works with Zeus, Wallet of Satoshi, Breez, Phoenix and probably some other wallets. This is what it looks like in Zeus after you purchase a ticket (nzjow in this case):

[MichaelAntonFischer]

it has not been implemented as far as I know.

is there any store live on which this could be tested?

It used to work, but disappeared after the nostr spam wave.

I’ve reported this several times to the blink team, this link is very important. On our OPAGO POS devices it is used to confirm offline payments, but it is also used for selling ebooks and much more.

[danielcharrua]

@nicolasburtey any updates on this issue?

We also are using this feature and all payments with your wallet are not showing the successAction response.

Any payments to the LNbits POS offline are failing (as they need the successAction url parameter)

Is there any chance that you'll implement LUD09?

Thank you.

[kotasjan]

Another use case is the Lightning Raffle implemented by LNURL Daemon. It uses the message success action to display a raffle ticket number. You can give it a try by purchasing a 1-sat ticket using the following QR code:

It works with Zeus, Wallet of Satoshi, Breez, Phoenix and probably some other wallets. This is what it looks like in Zeus after you purchase a ticket (nzjow in this case):

In Bitcoin Paraguay we would also like to use this raffle solution that depends on this feature. It helps us onboard people to Lightning.

[danielcharrua]

We also use this feature in the coffee machines from Satoffee. The offline version of our coffee machines use the successAction to show the secret code and unlock the machines...

[tiankii]

Coming...
Code completed, Ready for UI, Code Review
Feature: handle lnurl success action #3362
#3362

Implemented: LNURL successAction
-LUD-09: successAction field for payRequest: https://github.com/lnurl/luds/blob/luds/09.md
-LUD-10: aes success action in payRequest: https://github.com/lnurl/luds/blob/luds/10.md

[pretyflaco]

This feature is now available and in testing.

Android: https://github.com/GaloyMoney/blink-mobile/releases/tag/2.2.300
iOS: https://testflight.apple.com/join/YTeQWp6R

Please test and let us know here if your use case is covered, @kotasjan @danielcharrua @yanascz @AxelHamburch

[yanascz]

Please test and let us know here if your use case is covered

Tested by my friends who use Blink regularly, both platforms work great!

[AxelHamburch]

Thank you very much, it now works perfectly! 🎉

A little tip on what you can do with the new function. I use LUD-09 to show users the URL to a private Telegram group. This is a spam protection. Pay a 10 Satoshi ticket 🎟️ and you get access to the group. Works perfectly. 🏆