Fee script calculator #8978

diadal commented at 8:48 AM on October 20, 2016: none

am working on bitcoin project am stock at fee i want user to know and see their fee before sending bitcoin i will be glad if anyone can help me with the script to use or follow am using bitcoin core 13 for the project thanks

jonasschnelli commented at 8:51 AM on October 20, 2016: contributor

createrawtransaction -> fundrawtransaction -> check fee, show it to user -> signrawtransaction-> sendrawtransaction

Maybe consider a max-delay time for "check fee, show it to user".

jonasschnelli added the label Wallet on Oct 20, 2016

jonasschnelli commented at 8:52 AM on October 20, 2016: contributor

Also, this question is more about using bitcoin-core, try IRC #bitcoin or bitcoin.stackexchange.com, etc.

jonasschnelli closed this on Oct 20, 2016

diadal commented at 4:41 PM on October 20, 2016: none

have done a lot of research most say is bad idea to create createrawtransaction -> fundrawtransaction -> check fee, show it to user -> signrawtransaction-> sendrawtransaction is there any other way to do this or script that can help

jonasschnelli commented at 4:46 PM on October 20, 2016: contributor

@diadal: Can you elaborate why it would be a bad idea?

diadal commented at 8:31 PM on October 20, 2016: none

@jonasschnelli am not saying is bad i said most people said is bad idea i chat @ IRC #bitcoin like you advice i reply need help me this if i can get script that explain more about this

jonasschnelli commented at 7:05 AM on October 21, 2016: contributor

It probably depends on your use-case. But in general I think it's a good idea to...

Set outputs with createrawtransaction
Run coin selection and add inputs with fundrawtransaction
Maybe use decoderawtransaction to get json compatible output
Check transaction size, check fees
Maybe adjust the feerate (fundrawtransaction has a feerate option in master)
If you accept the transaction, use signrawtransaction.
Eventually use sendrawtransaction

This would also allow to decouple the signing/privatkey from your node. fundrawtransaction can work with watch-only-addresses and supports a custom change address (in master), signrawtransaction could be done on an offline-machine.

diadal commented at 10:07 AM on October 21, 2016: none

thanks so much for your brake down i will work with this and get back to you

diadal commented at 11:12 AM on October 26, 2016: none

how to create

createrawtransaction

if want to send like 1 btc and can only get the total in listunspent like 3 or more how do i createrawtransaction as 1 thanks

jnewbery commented at 2:19 PM on October 26, 2016: member

@diadal - I recommend you move this discussion to bitcoin.stackexchange.com, where there are plenty of people who are happy to help answer technical questions. You can also message me directly with the link to your question on stackexchange and I'll be happy to answer there (I've done some work on getrawtransaction and bitcoin-tx recently so I'm quite familiar with the code).

how do i know the txid

The first argument for getrawtransaction is list of objects representing the inputs. txid here is the transaction id of the transaction containing the input that your new transaction is spending.

diadal commented at 2:36 PM on October 26, 2016: none

@ jnewbery what is your username @ bitcoin.stackexchange.com

jnewbery commented at 2:49 PM on October 26, 2016: member

http://bitcoin.stackexchange.com/users/26940/jonnynewbs . Put a link to your question in this issue and I'll be happy to help you.

diadal commented at 2:55 PM on October 26, 2016: none

ok thanks but don't know what send you msg my id on there is bitotm

sipa commented at 3:40 PM on October 26, 2016: member

Just ask your question on SE, no need to specifically ask for one person to answer.

jnewbery commented at 3:59 PM on October 26, 2016: member

Sorry - I caused confusion by suggesting you message me. Just ask the question on SE (and optionally put a link to it here).

diadal commented at 4:19 PM on October 26, 2016: none

if you can fixed this if you are on Skype i don't mind paying for your service

DrahtBot locked this on Sep 8, 2021