Very nice! IIRC, each additional point gets significantly harder to score over time, it’s kind of a strange scoring system but it’s interesting.
I feel like it's actually kinda akin to Snake in that way. Nothing about each individual point/box gets more difficult to score over time, but the player is forced to deal with the consequences of the path they take. I've always had an idea for a variant of Snake that's less about reflexes and more about making a pretty pattern with the snake's body, and it has only just now occurred to me that this game actually kinda does some of what I was thinking, which is very cool!
If you ever did release this on a more official basis, I had an idea for a re-theme that I gotta share and I give you permission to use: make the main character a shark! That'd handily explain why they die when they don't move. Plus if you wanted to keep the "block chain" name, naming your game some variant of Shark Tank could still appeal to the finance/tech bro weirdos, while not being directly named after a widely ridiculed technology lol