I was doing some math so here goes.
Tx fees are nuts 600 sats are not high enough.
Block fees are 5 or 6 even 8 and 9 btc.
Simple math is a block can have about 1000000 in room and the smallest transaction is 250
That is 4000 transaction as a max. Close estimate.
So. Big pools make 20% of the blocks and do not pay tx fees to miners they keep the fees.
So 20% of 144 is 29 blocks say that is 200 coins.
If they. Do 100000. Sends of 0.001 and pay 0.001. They are doing 1/3 of the networks capablity for that day.
so 100,000 x 0.002 = 200
but ½ is fees and ½ comes back to them
so each day they make 100 coins in fees and they ensure the network stays clogged up.
Instead of losing money doing 100,000 x 0.001 in tx fees they make a profit.
So if you mine at antpool, btc.com, viabtc.com or rent to nicehash and don't do any sends the big pools can simply clog the network and make money doing it.
My math is solid As I use one 20% pool and we know there are more then one 20% pool.
Based on this I now mine at mmpool.org as they pay the tx fees to the block hitter.
This is not speculation this is math founded in fact.
https://btc.com/ 24 Hours Change 3 Days Lucky
1 BTC.com---------2506.00 PH/s
2 AntPool----------2417.21 PH/s
3 BTC.TOP---------2111.00 PH/s
4 SlushPool--------1537.66 PH/s
5 ViaBTC-----------1522.87 PH/s
6 F2Pool-----------1112.35 PH/s
so if the top 3 do what I say
there is a big time issue for all of us.
https://btc.com/stats/diff13400 ph is the current hashrate.
Antpool and btc.com are the same company that is 4900 of 13400
or 36.56%
lets break it down again using top 2 pools
36.56 x 144 daily blocks = 52.6 blocks a day with fees of 7 coins = 368.2 coins
150,000 sends of 0.001 + 0.001 tx fee = 300 coins since you are doing sends of 0.001 you get ½ back or 150 coins and you spend 150 coins.
Since you collect 368 coins you net 218 coins for your 52.6 blocks which is a sweet 4.14 coins in fees.
since the max transactions in a day is only 4000 x 144 = 560,000 and that is based on 227kb sends which are only some.
we do around
https://blockchain.info/stats370,000 transactions a day.
if antpool and btc.com are taking 150,000 a day in the way I say the other transaction will be costly.
Lets make this more clear.
top 3 pools get in on this
this comes to 7000 /13400 hash = 52.2 %
lets say they do 220,000 sends of 0.001 + 0.001 tx fee
they would be taking 220,000 of 370,000 sends which is 59.4% of the sends
since 52.2% x 144 = 75.168 block with fees of 7 coins it is 526 coins in fees collected by the 3 of them combined
since 220,000 x 0.001 = 220 coins paid they gain 306 coins by doing this as a team of 3 pools
this is not block with holding it is fee manipulation .
My math is dead solid factual no speculation here.
To combat this all miners need to mine on fee sharing pools. and stop mining on pools that keep fees.
The math above shows the top 3 pools will not stop doing this since it makes them a shit ton of extra money.
So all you big guys leave those pools . Mine on pools that share the fees.
check these charts
the math shows this to be the reason.