Quote from: achow101 on October 07, 2017, 05:54:30 PM

Those two services are owned by mining pools. They can choose the transactions that they want to include in a block. Usually these are chosen by transaction fee rates, but they have custom changes (or are using Bitcoin Core's prioritisetransaction command) which allows them to make a transaction be more likely to be chosen by their transaction selector so it will confirm sooner by being included in one of their blocks.

New information thanks .

is this only way to accelerated Transaction or there are more services ??