Questions tagged [python]

Python is an interpreted, general-purpose high-level programming language whose design philosophy emphasizes code readability.

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39 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 ...
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1answer
48 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
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1answer
53 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
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1answer
30 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,...
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1answer
29 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 ...
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2answers
63 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,...
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1answer
38 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 ...
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1answer
23 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 = ...
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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 ...
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1answer
41 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, ...
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1answer
21 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 ...
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1answer
70 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 ...
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1answer
53 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, ...
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0answers
84 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) ...
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1answer
27 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 ...
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2answers
92 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 ...
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0answers
20 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 ...
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1answer
60 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 ...
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1answer
38 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?
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1answer
28 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
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1answer
31 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 ...
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0answers
73 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-...
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1answer
56 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) ...
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1answer
67 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: ...
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2answers
36 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 ...
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2answers
68 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 ...
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1answer
121 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
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1answer
44 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 = ...
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0answers
127 views

How to sign bitcoin raw transactions with Python offline

I have a raw bitcoin transaction created using createrawtransaction unsigned_tx = "...
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1answer
54 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 ...
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0answers
75 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 ...
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0answers
39 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 ...
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0answers
91 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 ...
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0answers
61 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 ...
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0answers
160 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 ...
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0answers
82 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. ...
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1answer
46 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 ...
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1answer
293 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
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1answer
60 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
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1answer
59 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
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1answer
139 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
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1answer
310 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 ...
0
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1answer
81 views

Struggling to successfully broadcast a p2pkh transaction

I've been experimenting with sending bitcoin transactions with python for the past week. I successfully was able to send p2wpkh->ALL address types, p2sh-p2wpkh->ALL address types. What I am ...
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1answer
179 views

Python library for Multisignature HD wallets

Is there is any python library is available that allow creation of Multisignature HD wallets ?
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1answer
1k views

Get Bitcoin Wallet balance with Python

On a tutorial in Youtube it uses pybitcointools. Upon searching it's github repository, I have found that it was not maintained anymore. Are there any alternative to this library which can get wallet ...
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1answer
461 views

bitcoin rpc api createrawtransaction with python returns -3: Expected type array, got object

experimenting with JSON RPC API using bitcoinrpc.authproxy for python. so far it works in all instances accept when i try to create a raw transaction. somewhere along the way im passing parameters in ...
0
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1answer
78 views

What could this Python Assertion error mean?

When I run the code below, sending a BTC transaction to the blockchain (using blockcypher api) I get an Assertion Error. I am not sure what an Assertion error means. The code: Btw the address had ...
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1answer
97 views

How do I get the value of a btc address transaction with pybitcoin tools?

Lets say that I execute the code below when the user accesses the deposit page. my_private_key = random_key() my_public_key = privtopub(my_private_key) my_address = pubtoaddr(my_public_key) And I ...
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0answers
24 views

Why does this return an ssl error when using pybitcointools?

Really confused as to why this error persists. I have upgraded pip ( I believe) And have installed pybitcointools...
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1answer
51 views

Trying to create a bitcoin based webapp in python which takes BTC deposits. How would I use pybitcointools to implement this?

Trying to create a bitcoin based webapp in python which takes BTC deposits (New to Bitcoin in general, but want to get involved). Although I would preferably want to use a different address for each ...