Can I be the transaction processor and take in transaction fees as income without mining a Bitcoin? Can I be the transaction processor and take in transaction fees as income without mining a Bitcoin?  Would the fees be so low that it is not practical?
Or is it true that I have to be a miner in order to process any transaction? However, after year 2140, when all Bitcoins have been mined, then will people only use the computer to process transactions without doing any mining?
No. When miners mine blocks, that is &quot;processing transactions&quot;.