I'm making a UI on top of this, similar to electrum.
I really like your clean code!
Topic: Python Bitcoin ECC library, supports signing, transactions, determinstic wallets (Read 11455 times)
December 23, 2014, 06:46:02 AM
May 14, 2014, 05:14:26 AM
Try "from bitcoin import *"
I get the following error when I type the first line of code:
>>> from pybitcointools import *
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named pybitcointools
>>> from pybitcointools import *
Traceback (most recent call last):
File "
ImportError: No module named pybitcointools
April 01, 2014, 09:40:07 AM
Thank you for all you are doing for us.
I have scarse experience in python and programming in general but I like a lot your tutorial on multisig (http://bitcoinmagazine.com/11113/pybitcointools-multisig-tutorial/).
I get the following error when I type the first line of code:
>>> from pybitcointools import *
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named pybitcointools
also using the command line tool I get instead:
k1=`pybtctool random_key`
Traceback (most recent call last):
File "/usr/local/bin/pybtctool", line 8, in
cmd = sys.argv[2]
IndexError: list index out of range
I work on Mac OS. I have installed the tools with:
sudo pip install bitcoin
Thank you.
I have scarse experience in python and programming in general but I like a lot your tutorial on multisig (http://bitcoinmagazine.com/11113/pybitcointools-multisig-tutorial/).
I get the following error when I type the first line of code:
>>> from pybitcointools import *
Traceback (most recent call last):
File "
ImportError: No module named pybitcointools
also using the command line tool I get instead:
k1=`pybtctool random_key`
Traceback (most recent call last):
File "/usr/local/bin/pybtctool", line 8, in
cmd = sys.argv[2]
IndexError: list index out of range
I work on Mac OS. I have installed the tools with:
sudo pip install bitcoin
Thank you.
Same exact issue. The command-line tool works just fine. Can someone post what is in their python path?
March 30, 2014, 05:01:31 AM
nice work, put a footprint here [feasibility on multiple public keys]
March 28, 2014, 09:40:23 AM
Thank you for all you are doing for us.
I have scarse experience in python and programming in general but I like a lot your tutorial on multisig (http://bitcoinmagazine.com/11113/pybitcointools-multisig-tutorial/).
I get the following error when I type the first line of code:
>>> from pybitcointools import *
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named pybitcointools
also using the command line tool I get instead:
k1=`pybtctool random_key`
Traceback (most recent call last):
File "/usr/local/bin/pybtctool", line 8, in
cmd = sys.argv[2]
IndexError: list index out of range
I work on Mac OS. I have installed the tools with:
sudo pip install bitcoin
Thank you.
I have scarse experience in python and programming in general but I like a lot your tutorial on multisig (http://bitcoinmagazine.com/11113/pybitcointools-multisig-tutorial/).
I get the following error when I type the first line of code:
>>> from pybitcointools import *
Traceback (most recent call last):
File "
ImportError: No module named pybitcointools
also using the command line tool I get instead:
k1=`pybtctool random_key`
Traceback (most recent call last):
File "/usr/local/bin/pybtctool", line 8, in
cmd = sys.argv[2]
IndexError: list index out of range
I work on Mac OS. I have installed the tools with:
sudo pip install bitcoin
Thank you.
March 25, 2014, 11:07:22 AM
I deliberately designed the library to be simple and no-nonsense.
Thanks for the effort, and I feel bad having to ask for assistance when so much has already been given.What is required before you reach this point
Quote
> from pybitcointools import *
The command line examples are fine, but this "> from pybitcointools import *" only caused me grief.
"from pybitcointools import *" is Python.
If you have Python installed, you can just type 'python' (assuming it's in your path) at the command line to start the Python interpreter, and then you will get
>
from there you can do the above command.
Feel free to ask further questions as necessary. People will be happy to help.
March 23, 2014, 02:00:20 PM
I deliberately designed the library to be simple and no-nonsense.
Thanks for the effort, and I feel bad having to ask for assistance when so much has already been given.What is required before you reach this point
Quote
> from pybitcointools import *
The command line examples are fine, but this "> from pybitcointools import *" only caused me grief.
Same here. I couldn't get it to import, even with adding the correct folders to path(even inside the script using sys.path).
I'm no linux expert though so I'm probably doing something wrong.
March 23, 2014, 01:23:18 PM
I deliberately designed the library to be simple and no-nonsense.
Thanks for the effort, and I feel bad having to ask for assistance when so much has already been given.What is required before you reach this point
Quote
> from pybitcointools import *
The command line examples are fine, but this "> from pybitcointools import *" only caused me grief.
March 07, 2014, 01:12:36 PM
My application of pybitcointools: offbit - Minimalistic offline key generation, offline TX signing and Tor protected TX broadcasting.
https://bitcointalksearch.org/topic/annrfc-offbit-off-grid-bitcoin-txs-v0001-488915
https://bitcointalksearch.org/topic/annrfc-offbit-off-grid-bitcoin-txs-v0001-488915
March 03, 2014, 08:05:06 PM
What are you coding that needs such breakneck speed?
March 03, 2014, 02:24:04 PM
That's cool! But a different language can be better cause this ain't all that fast
March 02, 2014, 08:18:37 AM
I opened an issue with regard to signature padding here: https://github.com/vbuterin/pybitcointools/issues/9
I think fixing it might be a bit above my paygrade (or at least would take me a while), so if anyone can help I'd appreciate it.
Edit: Vitalik pushed a fix already, thanks (although it needs testing, which might be tricky).
I think fixing it might be a bit above my paygrade (or at least would take me a while), so if anyone can help I'd appreciate it.
Edit: Vitalik pushed a fix already, thanks (although it needs testing, which might be tricky).
January 23, 2014, 03:37:29 AM
the time part of the two random functions looses entropy:
str(int(time.time())**7) is probably meant to be
str(int(time.time()**7)) or
str(time.time()**7)
It would be nice to be able to add some base entropy by hammering your tinfoil hat on the keyboard at start.
str(int(time.time())**7) is probably meant to be
str(int(time.time()**7)) or
str(time.time()**7)
It would be nice to be able to add some base entropy by hammering your tinfoil hat on the keyboard at start.
December 29, 2013, 11:25:22 AM
Vitalik, this is exactly what I was looking for. I'm going to replace my HW wallet test harness with your library (the one I was using before was functional, but I'd say not the cleanest library in the world). Thanks for sharing - I'll let you know if I run across any issues or have any improvement ideas.
December 23, 2013, 11:49:30 AM
(On the above posts, Vitalik seems to have added an "eligius_pushtx" method to allow the more exotic multisig txs to go through (eligius processes them apparently) so that's cool 
)
Question: I want to do verifying messages with addresses from external wallets
..[snipped]
Question can be ignored, the code is already there in ecdsa_recover. Thanks
)Question: I want to do verifying messages with addresses from external wallets
..[snipped]
Question can be ignored, the code is already there in ecdsa_recover. Thanks
December 17, 2013, 02:03:25 PM
Are there any practical limits in numbers of parties to a multisig transaction? I am thinking of a scenario like 6 of 10 of 8 of 15. Does the size of the script start to break anything at any point?
n=20 is the maximum allowed by protocol.n>3 is currently non-standard, so you have to make a private arrangement with a miner to get those transactions included in a block.
Ah thanks that is a very important point for me ... I did notice the darkwallet guys using a 3 of 5 address, I guess I can ask them about that. I only have one special use for large numbers, maybe I can work around it.
December 17, 2013, 01:38:33 PM
Are there any practical limits in numbers of parties to a multisig transaction? I am thinking of a scenario like 6 of 10 of 8 of 15. Does the size of the script start to break anything at any point?
n=20 is the maximum allowed by protocol.n>3 is currently non-standard, so you have to make a private arrangement with a miner to get those transactions included in a block.
December 17, 2013, 01:37:22 PM
Are there any practical limits in numbers of parties to a multisig transaction? I am thinking of a scenario like 6 of 10 of 8 of 15. Does the size of the script start to break anything at any point?
Quote
I assume mktx will put anything not spent explicitly to mining fees?
Yes, it works like that here as that's part of the bitcoin protocol. December 13, 2013, 05:48:39 AM
I assume mktx will put anything not spent explicitly to mining fees?
December 03, 2013, 08:22:50 AM
Nice, congratulations. Though I would've suggested a different language cause simply Python ain't all that fast when it comes to these expensive operations there.
This reminds me when someone mentioned to me that I shouldn't use iostreams in C++. That it was faster to use C-style printf functions. After some bench marking and some inspection he was right that C++ iostreams are slower. Each << is a function call. I think this argument is similar. In the end it doesn't matter. Computers are fast today.
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