Sorry about it! I think it's time I write a message that it's been solved. Although I enjoy reading the messages from people who liked the hidden message :)
Sure, write a message in places..
or maybe update the functionality when somebody has completed the puzzle.
2 things though...
  1. The crossword could be a good pneumonic tool for a wallet interface... consider that, in terms of what you get up to next.
  2. I hope the existing puzzle stays online for a bit. It could be cool to send to pre-coiners.
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