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608 sats \ 9 comments \ @OgFOMK 18 Nov 2023 bitcoin

So I tried choosing some channels and the payments to on chain haven't settled. Is there a way to increase the settlement since there is no RBF?

I read one time that I could make a transaction with a large fee spending the UTXO of the address where the funds should have settled but haven't.

It's there some learning that I can do to use the shell and do some magic?

Thanks.

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10 sats \ 6 replies \ @Lumor 18 Nov 2023

Child Pays For Parent (CPFP) is what you're thinking about. But if the fee for the parent transaction is too too low, it will not even be allowed into most mempools, so the child transaction with high fee will be stuck, unable to be mined.

10 sats \ 2 replies \ @StackerKnacker 19 Nov 2023

Shit , I messed up here as well , I have a a lightning close that I accidentally put through at 1sat/vb , and then I used cpfp to bump up the fee . It's not been confirmed for like a week now , but I assumed that it was because of all of this stupid high fees stuff going on . How would you know if it is stuck ? Also , what do you mean "most mempools" , I thought that there is only one mempool?

10 sats \ 0 replies \ @Lumor 19 Nov 2023

Each node has its own mempool with its own memory limit (300MB, 1GB, etc). Transactions also take some time to propagate between the nodes, so even same size mempools may have slightly different content.

Maybe check https://mempool.space (possibly over Tor) to see if the original tx-id is still in their pool. But what matters more is whether the original tx is still in the mempools of mining pool operators.

@wiz of mempool.space announced a Transaction Accelerator project but I don't know if it has come online yet.

Bitcoin Core devs are working on "package relay" to help the underpaying txs into the mempools together with their high-fee child, but work is not yet complete.

10 sats \ 0 replies \ @Lumor 21 Nov 2023

https://www.viabtc.com/tools/txaccelerator

0 sats \ 2 replies \ @OgFOMK OP 19 Nov 2023

I gotcha so how about transactions that were in the mempool but are no longer there? Should I submit the transaction when and if fees go down?

10 sats \ 1 reply \ @Lumor 19 Nov 2023

Mempools will unfortunately not accept transactions under a certain fee-limit while they are still full. Waiting until fees go down seems to be the only option, or if something like the Transaction Accelerator comes online (see my other post in the thread). The Accelerator effectively would need to communicate with one or several mining pools to sneak the tx in.