#aksnostr And here I thought I understood bitcoin. And if I do - the answer is NOT. A raspberry node doesn’t contribute hashing power to the network and to change the network one needs to either control or convince 51% of the contributing network. Or - did I miss something? Somebody please clarify

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I think you miss something. The nodes choose the rules they operate by and defend the immutability. The miners defend the transaction history. Obviously it's not the whole picture.
Hash power has nothing to do with consensus rules. Nodes enforces consensus rules and miners apply hashpower to discover a block under those rules. Anyone can propose different rules, but if you don't agree, you just keep using the version of Bitcoin that you like in your node. Period.