Bitcoin miners "mine on" the Merkle tree root hash of all the transactions in a block. Therefore, the amount of transaction data does not affect the amount of e

Bitcoin miners "mine on" the Merkle tree root hash of all the transactions in a block. Therefore, the amount of transaction data does not affect the amount of energy expanded. However, as block space is limited, actually using the Bitcoin blockchain as a discussion forum is prohibitively expensive, because miners only want to include the highest fee-transactions.