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That's new! @pennsif - what is happened...? @michelangelo3, @visionaer3003 - do you have any idea...?

That seemed to be a temporary glitch. The server was still running as a witness and that message disappeared quickly.

In fact I have now witnessed my first block !

That reassures not only me, I think ;-)) That technology can be so vulnerable...!

No idea, mysterious things happen ;-)