But if a block is pool mined wouldn't it be split between many people as compared to a solo mined block that will only be paid to one address? – None – 2018-02-19T20:07:11.050

1The mining pool company get the whole reward (all the 12.5 bitcoins + fees) and AFTER THAT, the pool splits the money and sends it to the pool members (often in $). The rewards + fees are often paid to only one address (the address of the mining pool company). – ndsvw – 2018-02-19T20:51:31.587

@Alpha: Well, I think some pools have used the coinbase transaction to pay out to members. But it may not be common practice anymore. Conversely, a solo miner could pay out his reward to many different addresses - all belonging to him (to disguise their ownership), or some to other people to whom he owes money. Either way, it's true that this aspect won't distinguish pools from solo miners with complete accuracy. – Nate Eldredge – 2018-02-19T21:37:53.820

@Nate Eldredge, creating a coinbase transaction with [number of miners] outputs wastes a lot of space and you don't get fees for that. I think, they prefer getting more fees by including other transactions nowadays. – ndsvw – 2018-02-20T15:26:45.353

@Alpha: Well, you have to pay those miners eventually. If not in the coinbase, then in an ordinary transaction. If you put that transaction in your own block, it wastes just as much space. If you put it in someone else's block, you pay that amount in fees. Seems to me it all comes out in the wash. – Nate Eldredge – 2018-02-20T15:39:54.907

@Nate Eldredge, I aggree. But the other way would be: the mining pool sells the coins in a "1input-1output-transaction", gets dollars and pays the miners in $. – ndsvw – 2018-02-20T19:20:16.450