Here you go --
https://www.viabtc.com/tools/txaccelerator/I have to point out that due to the high demand for this free service, it will only work if you attempt to make ViaBTC accept your transaction within the first minute of each hour. Do it quickly before the transaction from Primedice drops....
This is one works. I have used it several times but as what i qouted stated, you have to compete with all those people trying to push their BTC transaction to be confirmed. It resets every hour forum time. If you failed to push it through this service you can try other transaction accelerator service but you need to pay the service. You can check the service discussion since I saw some member offering this kind of service.
Yes it works but of course not all transactions are accepted/eligible on them . To be eligible OP's transaction should have at least 10K sats/kb of miner fee, it shouldn't have any unconfirmed inputs, no dust outputs nor any involvement on double spending . Although if its unconfirmed inputs you can always use viabtc to confirm to those first .
You're talking about this guy right?
https://bitcointalk.org/index.php?topic=1934749.0 . From reading his thread it seems a legit service . You can do an estimation on pushtx.btc.com if you want to know the price . Btc.com uses alipay only so if you're gonna pay, go for
cyyap95