What about sending a message with a very small sum of GRC from the Foundation wallet to each user wallet whenever a significant event occurs?
I'm not sure how much it costs to send a message, as I have never done it before...
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Something like this ? cc @tomasbrod
Thanks for the link - looks like it already exists! Great news.
There are two good channels to send such message:
Note that the transaction does not need to be sent to each individual, wallet will pick up the contract even if sent to burn address.
Do you see any problems with this method of sending messages out to all active users?
At face value it appears like a very simple way to reach everyone who is active on the network, but your familiarity with the code base may yield a better alternative.
Alert protocol is perfect for this situations, it is fully implemented, except that the messages are not shown on the GUI.
Contract messages are not, but only a little work is needed to get them done. But Alerts are better: they work across forks.