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Yes, I'm really happy that it's working now. Big thanks for your help.

What about the front ends we see on meeray.com, dex.meeray.com, etc. - do you plan to make these available as open source as well?

Yes everything in the scope of the proposal was meant to be open source. All the dapps are made with vuejs and share the same architecture so if you are familiar with vue it will be easy to continue to develop them.
Will try to pass all the repositories in public in the coming week.

Great to hear! I'm excited, even though vue is new territory for me. As the saying goes: never stop learning :-)

Currently, only node1 is still producing blocks. I have set up a second node, but it doesn't help.

My question now is, will the sidechain be discontinued in 4 months? I assume that you will then shut down node1 & 2 and without node1 the chain will die, right?

Sorry for the late answer, you can possibly set up an hardfork at a certain block. The chain will not necessarily die without my nodes.

By the way since there is no official discussion channel… we had to introduce a temporary hard fork to lower the number of nodes. You can see it on GitHub. Because you or some other nodes were constantly missing blocks making it hard to reach a consensus (this is mostly due to the low peers count). After syncing back so in few days we will again increase the number of witnesses.
Thanks for your understanding.

Oh, sorry, I only saw your comment by chance, as it wasn't addressed to me. Yes, something went wrong; my node stopped producing blocks, as I wrote in my comment above 21 days ago. I didn't know what else to do, so I switched off the nodes.