Bitcoin Forum

I have seen a few services in the forum who have offered btc tx acceleration service for free. Do they really work? Have you ever used any such of service out of viabtc one? If you have, please share your opinion or experience on such services. I have never used them though.

I have yet to find one that works via Google search, and I've tried quite a few.  During previous network slowdowns, there used to be some threads created by members saying they could accelerate transactions, but I think most of them turned out to be scams. 

And man, I wish I did know of a good one at times like these, where the network is congested as hell and the fees are outrageous.  If anyone knows of any legitimate ones, I'd love to hear about them.

I knew most of these free offers on services board just use free accelerators as well as those who charge for fees, well, there are still some like QS. As what I read QS have access on some mining pool, I wonder if he still into it and taking offers to accelerate pending transactions.

Btw I used antpool and viabtc before, I wonder if antpool's accelerator still working though, didnt use it for a long time now.

I can no longer count how many times I tried in viabtc but zero success so far. It's so tough to get in. I always get "limit exceeded" or some error. I don't know if my timing was off or others are just too quick that one second is already too late.

I can't say for sure but it seems most of these free services are only rebroadcasting your transaction. If you're your fee is low, it will only be ignored by miners again.

I am not sure these bitcoin accelerators really work but i usually go to bitaccelerate (https://bitaccelerate.com/) and put the hash and see them push the transaction but that is when there is not much congestion but after this week it is not working after inputting two times then they are showing that the transaction is not in their database. Usually bitaccelerate works, may be any fees above 50 SAT/B might work.

viabtc usually never works when the network is congested ;D.

That's not an "accelerator". Like you said, they push (or better, [re]broadcast) the transaction. If your transaction is already on the mempool, it does nothing. The only reason someone would need to rebroadcast a transaction is if nodes start to drop the unconfirmed transaction from their mempool. But then you are back at the start again.

The only kind of accelerator that does work are the ones offered by AntPool, BTC.com and ViaBTC. They can, if they want, put your transaction on their mined blocks. All the other websites are either doing that for you or just scamming you.

TLDR: If someone comes here claiming they will accelerate your transaction, they are scammers trying to fish for donations or merits. Unless they have direct connections to mining pools (unlikely in most cases). Period.

IIRC, I just tried to use it a few months ago but it doesn't seem to work anymore. Viabtc is still the best accelerator for me that's free to use. I always get to accelerate with viabtc and that's why I'm paying the fee a bit higher than what they are requiring for them to accelerate one transaction.

It works for me even if the network is congested. It's actually a life saver if there's a lot of unconfirmed transaction, you only need to be quick when you accelerate because there are other users who are also waiting to be accelerated through viabtc and you need to be faster than them.

Technically, the only one who can accelerate your transaction is a miner or a mining pool by including it into the block they are working on.
So, as TryNinja said, anyone who offer such service and is not a miner/mining pool, is likely going to scam you (in any case: do not disclose more than the tx id).

That's because they only accept 100 transactions/hour, so you have to be very quick. Besides, your transaction fee rate must be above 0.0001btc/Kb.

This one definitely works: https://www.antpool.com/user/prioritiseTransaction.htm?m=savePrioritiseTx
I always send the BTC transactions with a mining fee of over 14 satoshis per byte, viabtc accelerator will solve the confirmation asap if the minimum fee is over 10 satoshi per byte. The accelerator above also has been an alternative for me and I come to ask from forum members if the transaction stuck for 24 hours.

During congested times there are hundreds of trying to do the same thing as you refreshing the page at exactly xx:00:00, I helped in the past a few guys getting their tx confirmed on ViaBtc and managing to squeeze in but yesterday when I tried I ended up with an unresponsive page and a timeout error hit refresh and saw the Cloudflare offline error so I gave up, and this while using a desktop, probably on mobile it will be a pain in the ass.


Wow, you've managed to arrive at exactly the wrong conclusion.
You were tricked into believing that bitaccelerate was indeed helping you getting the transactions confirmed because you were sending them when the network was not full and they would have been confirmed without you doing anything extra. The proof is that when the mempool is full it doesn't do a thing for you.
It's as useful as Lisa's anti-tiger rock!
On the other side, viabtc is the only one that can help you in these cases (for free) because they can actually confirm the transactions they chose in the blocks their mine with their pool.

Short answer is No. I would rather pay some fees to the miners and wait for the transaction to confirm than beg on someone's thread to make it seem as if the thread topic is legit.

Its a nicely planned gimmick/confidence trick run by some users on this forum. People tend to cheap out on fees and then come to ask their help, the helper does nothing but replies after a couple of hours saying that its been accelerated.

Now imagine going to this guy everyday, you will definitely feel one day that you should tip this person for their "hard work" - thats all how the scam works.

ViaBTC's accelerator used to work at one time. Its defunct now.

Would suggest you to pay fees as per the internet sites which keep track of current fees instead of using these services.

PS: I am yet to see any scientific proof that these services really work.

IIRC, "kano (https://bitcointalk.org/index.php?action=profile;u=36044) ^[active]" and "macbook-air (https://bitcointalk.org/index.php?action=profile;u=16114) ^[inactive]" have also an access.

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AFAIK, this link has been dead for a very long time ^{[it gives an error on my side, I've tried changing my IP but had no luck]}.
- Can someone confirm if they can view this page normally ^{[for those with accounts on antpool]}?

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I still use it on a regular basis ^{[it's a bit harder but still functioning]}...
^{Fun fact: Our last campaign payment [round 31] got its first confirmation through the use of ViaBTC's free accelerator.}

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Update:

That's strange, I can't access it >:(

Update 2:

I do remember and I agree, it was a bit childish :)

Yes. I even grabbed a random transaction which is in the mempool and submitted it through them. It says (https://i.imgur.com/ZDH5kLz_d.webp?maxwidth=728&fidelity=grand) the transaction was accelerated, so apparently, it still works (and probably even better than ViaBTC which never has free slots).

ViaBTC works quite normally all these years and does not work for those who have not read the minimum requirements, and do not know how to add a transaction. A few days ago, I helped a member get confirmation for his transaction, which was unconfirmed for 9 hours - and with the first block that Via mined, the transaction was confirmed.

https://bitcointalk.org/index.php?topic=5284993.msg55471902#msg55471902

Alright I guess I got misinformed about the functionality of ViaBTC and thanks for correcting me on that.

However I still dont consider the services provided about transaction acceleration by some members of this forum and like I said I would defenitely like to hear from them too instead of just giving it a one sided speculation. The last time we tried to ask CoolWave about it, SFR10 remembers it I am sure, it ended up being a childish thread in Reputation.

AFAIK, only 100 tx limits that allow per hour in the ViaBTC Bitcoin transaction accelerator.  If you will receive an error response it might be the 100 tx limit has been achieved within an hour.  Probably you should wait another 1 hour and accelerate the transaction next after an hour.

Exactly, and here are the Bitcoin pools prove that they really work.
https://bitcoinchain.com/pools, and ViaBTC was in 4th place.

Yeah, acceleration in this case means including your transaction in upcoming block that will be mined by a certain miner. It doesn't have to be a miner or mining pool alone, it can be a service provider that has a contract with certain miners / mining companies, am I right?

And about ViaBTC, yeah, it works and is the first and real transaction accelerator that was created. There was a time when I could add a transaction on viabtc at any minute but right now, you have to add a transaction in milliseconds, for this reason it sounds almost impossible because of some people's reaction and internet connection.

Another choice is pushtx.btc.com but their fees are so high, it really, really doesn't worth to use them. Viabtc also has paid service, not good but better than btc.com at critical moments.

It is ok here, website and registrations work. Maybe you should clear cache and try again. This accelerator has replaced the Toxigon which was the free BTC accelerator year ago but later they deleted this function from website. https://ibb.co/kQvcVSd

Does anyone has experience with the mentioned accelerators?
https://iraven.cc/tools/btctx
https://freebtcaccelerator.com/

P.S: I have used many BTC transaction accelerators but majority of the free accelerators are full of advertisement posts. I think using the Brave or ad blocking extension will be better rather closing the automatically popping up new ad tabs.

Most of the time when my transaction get stuck then i do make use of those free accelerator online which cant be sure if they are truly working or not yet you cant determine
if the said transaction had able to get confirmation just because it had been pushed through or simply it did really broadcasted.So theres no precise answer but some do say
it damn pretty works and as long i dont pay up something which is definitely a scam(lot of them online) then using them will dont put any harm.

freebtcaccelerator is just another broadcasting service and a buggy one, I've put a tx there as a test to see if they are offering me a paying confirmation service but I got the message that the transaction is already confirmed when it's not. Grabbed another one from the mempool and says the same.

The iraven one is doing the same, even their message is a hint:
"Successfully re-broadcasted transaction to the Bitcoin network."
Rebroadcasting is not doing anything, it might come in handy if the mempool goes completely overboard and transactions are getting booted out of the mempool but that's not the case. Actually in that case it would be better to simply let it be forgotten as it stands no chance of being confirmed soon anyhow.

Here is a very easy way to tell if they are really accelerating your transaction:
Upon getting a confirmation,  use a blockexplorer (specifically, blockchain.com) to check the block height of your transaction
and there's usually a pool name (set by the blockexplorer (https://www.blockchain.com/explorer)).

If it's "unknown", there's a good chance that the person is solo mining to include the accepted transactions.
If you'll only seeing random pools, then it's a rip-off, or the fee is just enough to be mined within the next few blocks.

For example, ViaBTC accelerator when used will be displayed as the miner of the accelerated transactions.
I've used it trice during this "high fee season" and the results are consistent.

I took three tx hash from a very active free or paid accelerator service thread here and tested using your method. Three different mining pools showed up as a result namely Poolin, F2Pool, BTC.com.

I don't wanna name it but it's easy to figure out.

Does this mean that the transaction would have confirmed even without their "help"?

........

They should stop calling themselves as "accelerators" and change to "rebroadcaster" instead if they're not self-mining or connected to a mining pool.

Depending on the fee rate of those transactions, but I bet that was the case.

There's also a chance that the service is legit but those transaction were mined by pools first since their fees are actually good enough and pools' hashrates are higher.
If you can gather more transactions, that should give you a more accurate conclusion.
There was a case when "some accelerator" took all the glory with a "done" quote while I'm the one who did the work.

Anyone can offer such a service and then use some other services, and present the results as their own success (if any). Often it is actually just a re-broadcast of the transaction, which is very easy to sell under acceleration - and often the transaction is confirmed on a regular basis, for which some of course take credit.

I personally had the only success with ViaBTC (as a free option) and everything else I tried ended in failure. Therefore, it would be much smarter to learn how to reduce fees using native SegWit and consolidating inputs at a time when fees are minimal.

I have never found a good accelerator at all. I was once using a free service on this forum and it turned out to be nothing. Waiting was still the only thing I can do during network congestion. I guess they only make it up in order to collect money from people who are desperate with long transactions

There is a way to change the transaction fee but it only happens while using myetherwallet (using ethereum). You just simply make a new transaction with a higher fee and then it will make the previous one cease to exist. Well, personally, using altcoins in this high time is better than using bitcoin. Waiting for such a long time definitely interrupt our businesses

keep in mind that the pool names represented on block explorers are not that accurate. they usually have a list of hard-coded names that they try to find an exact match for inside the coinbase transaction. if the name is slightly different (like something simple as having an extra byte at the beginning) they will fail to match and show it as unknown.

I can't tell, but based on my experience, it seems like nothing change when I tried to accelerate the transaction, but mind you, all my the services I have used is a "free service", not sure if there's a difference if you are using a paid service.

ViaBTC free accelerator still works for me atleast!
https://www.viabtc.com/tools/txaccelerator

Also this guy seems to be helpful:
https://bitcointalk.org/index.php?topic=5034315.0

Been using viabtc as I believe they are the most popular, but like I said, I don't see any big difference.
However, during this time, I already ensure a high fee everytime I transact, just to not wait for too long like my friend experience which his transaction was still unconfirmed for many days already. 

Thanks for recommending that thread, I'll tell him to use that.

The "unknown" miners must be inaccurate and may be another one of those known pools, but the named ones could be reliable.

blockchaindotcom, the one I suggested to use, is basing it on the coinbase transaction's address.
You can click the miner's name and you'll be redirected to an address' transaction history.
That suggests that they have a database of addresses linked to mining pools (there may be two or more addresses linked to a single pool).

Blockchair (https://blockchair.com/bitcoin/blocks?q=time(2020-11-03%2014:28:36..2020-11-04%2014:28:36)) has a far better tagged database than blockchaincom, they show a lot of unknown where there is nothing unknown about them.
Quite funny in their pool stats (https://www.blockchain.com/pools) they show huobi and 1tash but they don't tag their blocks.

Anyhow, the entire solo mining thing is quite unrealistic, you would have to own at least 1% of the hashrate to think of an average of 1-2 blocks a day so you can actually confirm something in time, not wait a week for it, and for that, you would need more 10 000 S19 or 60k S9  and I don't see a guy with equipment wort 20 million dollars being non-stop online and taking confirmation requests. A pool technician, maybe..but still slim chances. When we talk about a thing that makes at least 70k$ a day if h wanted to help he could set up a website for 100$ rather than taking requests via a forum.

After having a few drinks it is hard to articulate what i wanted to say :D.  I had no faith in these accelerators and the site i mentioned was created to make ad revenues and i had no idea who is running that but if a pool is running one then they can accelerate that and viabtc is the only accelerator i knew and it was not working for a long time and was not aware of any pool running one.

As per the suggestion by bL4nkcode i tried antpool accelerator with a lower fees to try whether it is working but i did not see any difference.

Will check that one and thanks for that.

I'm using a free service from a friend from my telegram account, I think his service works for me I have one transaction that was unconfirmed for 7 hours already so I ask him to accelerate my transaction and within two hours the transaction was confirmed and he did it 4 times to me already, but now I'm using bitaccelerate it uses at least 6 pool to rebroadcast it, so I guess re broadcasting it also helps to confirm.

Make two identical transactions when the mempool is full. Ask your friend to "accelerate" one of them. See if it gets confirmed faster then the other. Or just asks him how he can do that, because it's mostly bs.

It doesn't.

How did you check to see if it works? If you expected to receive a confirmation as soon as it shows your TX under the "accelerated transactions" then that's not how it works...
^{- You still have to wait for them to mine a block or two.}

I'll try to explain this without using technical terms:

Rebroadcasting services are more like a reminder but accelerating services, on the other hand, are more like the bouncer/bodyguard friend that you have at a certain club that helps you skip the line but that doesn't mean someone is going to buy you a drink as soon as you step in the club ^{[you still have to wait for someone to do that for you, assuming you're a lady in this example]}.

I have tried it once in the past, because I didn't add enough fee then. It seemed to have helped then, as it was confirmed a few hours later.
That could also have been a coincidence. What would happen to a transaction where you give way too little fee? will it ever be confirmed?

Even if it took 6 hours to get the confirmation i will not claim that i did not work, i made a transaction with 27 SAT/B when the fees at that time was over 250 SAT/B and i added my transaction to antpool accelerator and it got confirmed only after the fees came down below 27 SAT/B after waiting a couple of days. That was the first time i tried using antpool accelerator after the recommendation, may be some other time they would accelerate the transaction but it did not happen when i tried.

It will still be confirmed but it will take time to confirm when the network congested.

I have use a free accelerator and it looks like it help me confirm my transaction, I'm not sure it it really did but it increase the sat per byte according to the prompt message from the site. I've been using this one https://bitaccelerate.com/....you guys, what are your experience on this site?

If you read the previous replies, you will see I said multiple times that it doesn't work. It's just a rebroadcaster.

I have always observe this transaction accelerator for quite some times now and I wonder the kind of free service they offer, at the same I always see testimonials and know whether they are been paid to do so, although I have never tried it before so don't know how it works.
My questions for accelerators is this, what's their gain in performing this for free?

Most accelerators nowadays don't do anything but instead data-mine/ serve ads to you. So they gain adsense eligible traffic for no cost at all. (Minus hosting.)

Real accelerators which are free do not monetarily benefit from offering their services other than brand awareness, well, if that's expressible in money at all. (After all, they're allowing transactions with "less fees" to be confirmed.)
(The only one that i know of that is free and which might actually do something is the one from VIABTC.)

And well, accelerators which ask for money... their businessmodel is self-explanatory (if they aren't scams that is!).