I believe the antpool "acceleration" submitter still works even for 0-fee tx now, so in the unlikely event someone inadvertently managed to make such a tx, there's still that one avenue for confirmation.
Is Antpool's accelerator free though? The only free transaction accelerator I'm aware of that actually is working is the one from ViaBTC and that one requires a minimum transaction fee.
It's always been free, at least from when I knew about it in 2017. I seem to recall there being some conditions, if I'm not mistaken, it shouldn't be a double spend, but there wasn't a min fee as I used it myself several times to push txs for people getting stuck for days/weeks, including 0-fee ones.
Is Antpool's accelerator free though? The only free transaction accelerator I'm aware of that actually is working is the one from ViaBTC and that one requires a minimum transaction fee.
No and it also looked broken yesterday. It wouldn't work for me when I wanted to see what the fee would he to push something through.
It's also worth noting that once you sign a zero fee transaction in electrum. No one else will broadcast it unless you do a nonstandard transaction on Bitcoin core which isn't something to do lightly.
You can double spend a no fee transaction also. You guys are forgetting that a node won't broadcast a transaction that is a double spend but if it's a zero fee transaction most nodes don't accept it so it can be double spent in the mempool as long as you send it to a node that accepts it. Only one transaction will ultimately be added to a block though.
and it doesn't seem to have changed from when I last remember using. Still free, and able to accept even 2/3 txs. Just submitted a couple of txs and it got accepted for "acceleration". They'll probably naturally get confirmed for others long before antpool though. They've switched off quite a bit of their rigs recently haven't they?
Will try and remember to do a 1 sat/byte tx during next spike and see if antpool will confirm it... and update. Likely to be a few weeks til another mempool spike happens.
Still easy to mess up though
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