Unanswered Questions
86 questions with no upvoted or accepted answers
1
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Nonstandard witness when building a transaction
i try to spend a P2WSH 2of2 multisig input in Python for learning purposes.
When i check my assembled TX with testmempoolaccept i get "bad-witness-nonstandard".
This is my function to ...
CommunityBot
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1
vote
0
answers
64
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Why assertion error in Point addition?
I am doing my research on SECP256k1 but now i am facing assertion error sometimes.
I can't seem to find where it comes from, so i once thought its because the resulting point is point at affinity.
So ...
1
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0
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83
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Error when trying to broadcast multi input tx (Programming Bitcoin by Jimmy Song)
I am reading Programming Bitcoin (chapter 7 exercise 5) and I have created a 2 inputs 1 output transaction on testnet which I have signed and it now verifies as true. When I go broadcast the ...
- 28.5k
1
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0
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205
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How to set change address with python bitcoinlib
I am using python's bitcoinlib to try and set up payments where a client sends funds to a server and then sends requests signed with their key as proof that the request came from them. The server ...
- 11
1
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0
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188
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How to get transaction size as byte before send with Python's bit library?
I am using bit library to make a Bitcoin transaction.
I can use methods like this:
key.create_transaction([('1Archive1n2C579dMsAu3iC6tWzuQJz8dN', 190, 'jpy')])
or
key.send([('...
- 3,260
1
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0
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328
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Bitcoin Transaction Builder in Python
is there a python code that helps build raw bitcoin transactions (Legacy and Segwit)?
I have seen javascript but not in python.
1
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0
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125
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I get a not a P2TR scriptPubKey error when trying to generate a bech32m taproot compliant P2TR address with python
I have the following script that is supposed to derive a taproot P2TR address:
from bitcointx import set_custom_secp256k1_path
set_custom_secp256k1_path('./bitcointx_secp256k1_here/libsecp256k1.2....
- 10.4k
1
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0
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169
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Cannot import python-bitcoinlib into a simple script
Im writing a simple python script to connect to a local bitcoin node and list transactions.
I created a virtual environment with:
virtualenv bitcoinenv
And then activated:
source bitcoinenv/bin/...
- 15.8k
1
vote
1
answer
309
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How can I tweak a private key in bitcoin core
I'm wondering what the workflow is for building tapscripts.
I can generate a new address, but how do I tweak it with the tap script?
I've done the bitcoin taproot workshop a couple times now and ...
CommunityBot
- 1
1
vote
1
answer
98
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Wrong hashes for blocks when parsing from blk
Hello I'm using a python script to actually retrieve information from a blk file and to read data.
import datetime
# Read block !
file = open("REDACTED\blocks\\blk00000.dat", 'rb')
...
CommunityBot
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1
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0
answers
46
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Incorrectly counts the we have added a generator point to itself in a loop (SECP256K1, Python),
I have a script that converts a bitcoin private key into x and y coordinate with parameters of a Secp256k1 curve. Here's the script:
a = 0
b = 7
#Order of the finite field
prime = 2**256 - 2**32 - 977
...
- 35
1
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0
answers
455
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How to ignore ResourceWarnings during running tests?
I was trying to run python tests in order to test a PR. I used this command to run p2p tests:
[amirreza@localhost bitcoin]$ ./test/functional/test_runner.py test/functional/p2p*
It produces lots of ...
- 1,265
1
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0
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98
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BlockCypher API signature bitcoin transaction Error
I'm trying to make a bitcoin transaction using the BlockCypher API and I'm getting an error when I try to sign the transaction.
This function creates an unsigned transaction:
def buildTransaction(...
- 39
1
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0
answers
92
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bitcoin-etl: problems with installing
I am trying to install bitcoin-etl: https://github.com/blockchain-etl/bitcoin-etl to analyze bitcoin blockchain.
I have Mac OS and python3, I run this in terminal:
pip install bitcoin-etl
Also tried ...
1
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0
answers
688
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Connection refused when using bitcoinrpc on Linux
I am new to python-bitcoinrpc(also new to VM Linux actually) and I want to use the blockchain parser from alecalve to get ordered blocks. I used Windows to download the blockchain data into an ...
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