Questions tagged [python]
Python is an interpreted, general-purpose high-level programming language whose design philosophy emphasizes code readability.
202
questions
0
votes
1answer
36 views
How to get uncompressed BTC address and private key from bit module for Python?
I am new in programming and BTC. I want to make some BTC address with private keys. Till now I learn that we have compressed and uncompressed private keys. But I get only compressed private keys and ...
0
votes
1answer
26 views
How to Construct a Ping Message
I am struggling greatly trying to figure out how to send a basic "PING" message, and receive back a "PONG" response.
import random
import hashlib
import socket
PEER_IP = "35.187.200.6"
PEER_PORT = ...
0
votes
1answer
21 views
How to verify locking and unlocking scripts?
I've selected an arbitrary transaction id and retrieved its associated transaction details using the blockcypher explorer as follows:
from blockcypher import get_transaction_details
...
0
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0answers
43 views
Issue generating private Key and segwit address with python
I used the following script to generate my private key and the corresponding segwit address.
Then to test it, i sent funds to the address and imported the private key on blockchain wallet;
RESULT: ...
1
vote
0answers
27 views
How to generate unspendable testnet bitcoin address with python?
I'm trying to generate a testnet address. However, I tried to write this python program (using help of various online code places), and I created this program. The program is designed to take a 20 ...
1
vote
1answer
44 views
Decoding hex scriptsig in Python
Running decodescript on d1a076722d11ddfd0fadb96d6d960b8b2ad6c6369570cd00df70a801a6be9e44 is returning:
{
"asm": "0 ...
0
votes
1answer
29 views
How to run a python script when occur incoming transaction in Bitcoin core 0.18?
I want to run a python script when occur an incoming transaction. I think set zapwallettxes flag in bitcoin.conf but I don't know where set the script path to execute.
Is it possible to execute ...
0
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0answers
27 views
How to create a Bitcoin Transaction With Protocoin
Please how do I create a btc transaction and broadcast it with protocoin library? I want to create a transaction that will relay to the node without validating inputs and outputs. Of course I know the ...
1
vote
1answer
62 views
How to Pay to Multisig Wallet Using python-bitcoinrpc?
How do I pay to a multisig wallet? I am using the Python API (based on python-bitcoinrpc) that ships with the bitcoin source code, in directory bitcoin/test/functional. I'm using regtest.
I call ...
1
vote
1answer
59 views
In Python RPC Calls, How is vout Address Derived for P2PK transaction?
How is the vout address derived for a P2PK transaction? I am using the Python API that ships with the bitcoin source code, in directory bitcoin/test/functional. I'm using regtest.
I have written a ...
2
votes
1answer
90 views
How do I sign a transaction in Python?
How do I sign a P2SH transaction in Python? I am using the Python API that ships with the bitcoin source code, in directory bitcoin/test/functional. I'm using regtest.
Here is a fragment of my unit ...
2
votes
1answer
49 views
Python implementation for LND path finding algorithm
The most common Lightning nodes use GO, C or Scala for their implementation. Is there any publicly available Python implementation for the path finding algorithm any of the most known clients use (LND,...
0
votes
1answer
39 views
What is the program in Python that print information about the current block?
What is the program in Python that print information about the current block the world try to mine (I mean Version, Previous Block, Merkle Root, Time, Bits) plus how many zeros we are looking for for ...
2
votes
2answers
81 views
How can I interact with Eclair from Python?
I want to write some scripts for experiments with Lightning. Python is the language I'm most comfortable with. From the three major implementations, LND has python-grpc and c-lightning has pylightning,...
0
votes
1answer
39 views
Source and (mis)handling of the private key for a basic tx
I'm looking to get "hands on" with signing, however when I adapt Runeks' thorough answer at https://bitcoin.stackexchange.com/a/5241/89798 my code invariably fails reporting that I've used the wrong ...
0
votes
1answer
40 views
How to convert a python example with getinfo to a usable function?
From Antonopoulos' book I try to use the example 3-3 on page 49 which uses a python skript called rpc_example.py to show the usage of the JSON-RPC API:
from bitcoin.rpc import RawProxy
p = ...
0
votes
0answers
11 views
Resource pool and bitcoin rpc (python)
Is it safe to use a resource pool (e.g. https://github.com/Bogdanp/resource_pool/blob/master/resource_pool.py) for:
rpc_connection = AuthServiceProxy("http://%s:%s@%s:%s"%(user, password...))
What ...
0
votes
1answer
90 views
Strange re-connection problem with python-bitcoinrpc
I am using https://github.com/jgarzik/python-bitcoinrpc to access the bitcoin core rpc. I have found a very strange re-connection problem.
from bitcoinrpc.authproxy import AuthServiceProxy, ...
0
votes
1answer
26 views
Alternative to Python pip bitcoin
This Python pip package https://pypi.org/project/bitcoin/ was originally developed by Vitalik Buterin (that Ethereum guy) but is no longer maintained. Is there any alternative equivalent pip package ...
0
votes
1answer
145 views
Is there a Python or SageMath implementation for solving the ECDL problem for small secret multiplier?
I am looking for a Python script or SageMath code implementation for testing the Baby Step - Giant Stepand Pollard Rhoalgorithms on the secp256k1 curve.
I have read that these algorithms are well ...
0
votes
1answer
133 views
Checking external bitcoin address balances via JSON-RPC API
I'm using bitcoin core json-rpc api in python and am wondering why...
getreceivedbyaddress()
...doesn't allow me to specify an address that isn't in my local wallet?
The whole blockchain is open, ...
0
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0answers
102 views
submitblock to btc-core fails to decode
I'm trying to create a little mining-script that connects over rpc to bitcoin core. I have problems following the documentation and all attempts to create a valid block (with dummy-nonce for testing) ...
0
votes
1answer
28 views
These testnet outputs are not making sense to me
Today I took some time to mess around with the bit Python library, which I find pretty easy to use. I have been wanting to do some Bitcoin programming for a while, so I decided to create a simple web ...
0
votes
2answers
125 views
How to get the block hash in the chainstate leveldb?
From this link What are the keys used in the blockchain levelDB (ie what are the key:value pairs)?,
to get the block hash I use the obfuscation key and xor it with the result I get from the db. So I ...
0
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0answers
21 views
Blockchain.info block explorer help
Using the python blockchain.info client
When I attempt to get blocks and print the result I get this output:
<blockchain.blockexplorer.SimpleBlock object at 0x103c6b208>
How can I access the ...
1
vote
1answer
124 views
How exactly do I decode the block file info in leveldb?
Base on the links
https://github.com/bitcoin/bitcoin/blob/fcbc8bfa6d10cac4f16699d6e6e68fb6eb98acd0/src/main.h#L392 and
What are the keys used in the blockchain levelDB (ie what are the key:value ...
0
votes
1answer
52 views
Read an XPUB list of transactions to Python using my own node [closed]
Anyone familiar with a Python library that can get a list of all transactions under an XPUB but by connecting to a Bitcoin node through RPC?
2
votes
1answer
39 views
How to parse values in block index leveldb?
So I'm trying to read the block files with Python.
From this link,
What are the keys used in the blockchain levelDB (ie what are the key:value pairs)?, it tells you how to access the files with ...
0
votes
1answer
39 views
Retrieve number of OP-RETURN transaction
Is there a possible way to extract the bitcoin transaction protocoll with Python and extract specifically OP RETURN transaction?
I want to plot the number of those over the course of time to derive ...
0
votes
0answers
92 views
How can I generate a bitcoin address offline in Python?
I am new to python and bitcoin so please bear with my question. I want to integrate bitcoin as a payment method in my platform, I want to use 3rd party api service for sending transactions to block-...
0
votes
1answer
88 views
How do I use an issued API key in my python 3 script to bypass the request limiter?
I got an API key from blockchain.info to bypass the request limiter, but I don't know how to use it and I can't find any relevant info online.
url = "https://blockchain.info/rawblock/" + str(s)
...
0
votes
1answer
87 views
broadcasting error for raw bitcoin transaction testnet
I am trying to create a raw transaction and send it to the testnet. I am using testnet keys and here is the simplified readable output from my script:
decoded private key: ...
1
vote
2answers
40 views
Why getinfo() and listchannels() inactive channel count differs?
I have strange results comparing node information outputs between getinfo() and listchannels() calls. Maybe someone has thoughts what is wrong (with my trivial code or with c-lightning itself):
chans ...
0
votes
2answers
75 views
What are the web3py equivalent for communicating with bitcoin in Python?
I am fairly new to working with Python, I have a requirement where I need to perform some basic bitcoin operations on my local system rather than relying on some external API's, those function mainly ...
0
votes
1answer
163 views
Question about Python library coincurve/libsecp256k
I am a noob with cryptography, just trying to learn using python and the library Coincurve ( https://github.com/ofek/coincurve ) which is a mature Python binding for libsecp256k1.
The following code ...
1
vote
1answer
47 views
Create a transaction spendable in a specific block height
I am new in Bitcoin and I try to create an address in Bitcoind and send a transaction that the amount will be spendable in a specific height of the blockchain.
Here is what I have done:
privateKey = ...
1
vote
0answers
178 views
How to sign bitcoin raw transactions with Python offline
I have a raw bitcoin transaction created using createrawtransaction
unsigned_tx = "...
0
votes
1answer
58 views
Why future Bitcoin Core release shouldn't be in python?
Python offers various advantages including simplified rules of coding and ease of readability. It offers OOP, cross platform compatibility and has numerous libraries that have been added over time. It ...
0
votes
0answers
87 views
Bitcoin walletnotify doesn't pass the txid as %s
Thoroughly searched this online but haven't found an answer yet. Basically I'm using the below line in my conf file:
walletnotify=C:\pathname\filename.py %s
It is supposed to run my python file ...
0
votes
0answers
44 views
How can I connect to my own bitcoind node via json-rpc calls from python3 (or Django)? I'm using Windows 10
Context: I'm using bitcoind on Windows 10 and am able to operate it from bitcoin-cli already. Just want to do it programmatically from python3.
Bitcoin wiki says python-jsonrpc is for old versions ...
0
votes
0answers
121 views
python-bitcoinrpc: modulenotfounderror no module named 'bitcoinrpc'
I'm running bitcoind/ bitcoind -regtest on Windows 10 and am already able to use bitcoin-cli -regtest along with json-rpc methods to perform basic operations and get balances etc. When I try to do ...
0
votes
0answers
71 views
SHA256 hash generating python
Can somebody give me complete python code that outputs a valid and random sha256 mining hash using python? I know bitcoin with a laptop is incredibly unprofitable, especially with python, I am just ...
0
votes
0answers
222 views
Fastest way to generate millions of public keys from private keys (Python/C#)
I have run into a problem when trying to generate public keys from my mnemonics via privatekeys. The mnemonic -> privkey is fairly fast. Although when deriving the m/44./0./0./0/0 public adress it ...
0
votes
0answers
100 views
examples of using pycoin in python script
Im attempting to create a python script/app that creates and holds its own funds for trading btc and alts.
I cant find any examples of how to use pycoin as anything other than a command line tool. ...
0
votes
1answer
49 views
getrawtransaction not working for 0th BTC block transaction
I am trying to insert BTC blocks and transactions in MONGODB collection from count 0 using Python3. getrawtransaction is giving output for block 1 but not for block 0. Can somebody help me why this ...
1
vote
1answer
355 views
Bitcoin RPC connection
I am trying to insert bitcoin transactions into MongoDB using python3. Below is my code :
import pymongo
import sys
import json
import time
from bitcoinrpc.authproxy import AuthServiceProxy, ...
1
vote
1answer
64 views
Mutlisig tansactions with trezor with multiple inputs and outputs not able to broadcast
I am trying to do a multisig
here is my final hex
...
1
vote
1answer
65 views
Why is Target < Blockhash?
I am currently trying to validate a blocks hash against its target in python3:
This is a block in the Blockcypher testnet, and I am using this formula from the Bitcoin Wiki.
block_hash = '...
0
votes
1answer
165 views
Python - Querying bitcoin's block header using leveldb
I am facing a stupid problem. I am trying to read bitcoin/blocks/index leveldb using plyvel. I've set up a regtest and i know there is a block with the hash :
...
2
votes
1answer
392 views
Python: How generate bitcoin addresses using electrum library
What am I doing wrong here? I'm trying to generate bitcoin addresses from the seed but they do not match with ones from electrum application. Did I miss something? And I also have trouble with ...
