Questions tagged [python]

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

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bitcoin core wallet and python bitcoin-lib

I have a regtest bitcoin environment with nodes and wallets. I'm running bitcoind and bitcoin-cli, version v0.21.0.0. So in my node i created my wallet with a bitcoin-cli -regtest createwallet node1 &...
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Generate BTC Compressed Address

The below code generate uncompressed address with and the Private key for this uncompressed address. How to generate compressed address with it's private key ? I know there is packages like bitcoin ...
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How Create Bitcoin wallet from a private key works?

I'm trying to understand how i can create a pair of bitcoin private key and public key with : https://github.com/Destiner/blocksmith for example : import blocksmith kg = blocksmith.KeyGenerator() ...
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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 ...
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1answer
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How can I pull the “Candles” argument from the Huobi websocket data?

I've a problem with Huobi Websocket, I know my ways in REST API but new to asyncio and websockets, and Huobi only gives resonable amount of history through websocket request so I'm stuck with it. I'm ...
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1answer
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Python: Why the addresses and keys generated by pywallet and bip32utils using the same 12 mnemonic words don't match?

I tried to generate wallets by using pywallet and bip32utils (Python). But I noted that the addresses/keys of the 2 wallets, namely wallet_pywallet and wallet_bip39 don't match with each other. I ...
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1answer
22 views

How to verify a lnurl-auth callback with python

I want to create a Python implementation of an lnurl-auth server. I started a quick HTTP server to be the callback url, and captured the signed callback sent by BLW on Android. ?tag=login &k1=...
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1answer
153 views

How convert Bitcoin Privat Key Compression to public address?

This script gets the public address from the uncompressed private key. import ecdsa import hashlib import base58 private_key = input("privatekey: ") # ...
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1answer
46 views

Is there a simple python script for xpub generation from private key

I need a python script to verify, in an air gapped system, that my 24-word (or 12-word) mnemonic seed indeed generates the xpub that my wallet is showing me. Is there a simple script that does that, ...
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32 views

Process for finding nonce

Assume we have a transaction in hex (tx_hex) and we want to find a nonce such that SHA-256(SHA-256(nonce|| tx_hex)) = new_transaction_id ('||' denotes concatenation) first bits consist of 32 zeros. ...
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35 views

How do I fix socket.timeout error when getting data from blockchain.info? [closed]

I'm writing a python script using the blockchain API that takes as input a list of seed addresses, gets their transactions and the input/output addresses of each transaction. Then I get the ...
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1answer
109 views

How can I generate SegWit addresses from a mnemonic using python?

So, I have written a script that generates BIP39 mnemonics. I now want to generate N native SegWit public keys from this mnemonic. I have found this, but it generates legacy addresses. It uses the ...
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1answer
43 views

How do I convert a private key in hex to a Segwit private key expected by Electrum?

I've been following this code to generate SegWit addresses with python. However, I'm confused because this script doesn't output the private key in a usable way for Electrum. I found this site which ...
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1answer
25 views

Does python-bitcoinlib and the Bitcoin Core functional test framework share code? Were changes ever pushed down/upstream?

Does python-bitcoinlib and the Bitcoin Core functional test framework share code? Were changes ever pushed down/upstream?
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How to generate bitcoin address with gpu in python [duplicate]

I have seen a lot of bitcoin address generator with python, but all of them run on cpu, and are very slow,, for fun and educational purposes, I have been trying to use gpu to run the python script to ...
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1answer
51 views

Test vector 1 BIP32 in Python

i tried to replicate code in this git https://github.com/tongokongo/bitcoin-basics/blob/master/HD_wallet/bip32.py . I'm not familiar with python but the xpub is correct (this is the Test Vector 1 from ...
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2answers
347 views

Download blocks in blk00000.dat format from a specific period

For study purposes, I would like to download blocks from a specific period, i.e. January 2017 - June 2017, in blk.dat format (blk00000.dat, blk*.dat). I downloaded blockchain.core but it makes me ...
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23 views

python-bitcoinlib: Synchronise block headers

I am trying to run a simple python script to synchronise the Bitcoin block headers for an SPV client, using the python-bitcoinlib. This is the code that I am running, after doing the handshake: msg = ...
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1answer
437 views

How to generate Hash160 from a private key with the Bitcoin module

I want to fix the script code. The script generates from a random private key Bitcoin Address by function (pubtoaddr) and works on the Bitcoin module: https://github.com/primal100/pybitcointools/blob/...
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1answer
63 views

XPub to YPub Converter (python) - Last digits wrong

The code below is generating an YPub from XPub with the last 6 digits wrong. How can I verify what's happening and fix this error? e.g.: It should be ...
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1answer
84 views

SPV client TCP connection in python

I am trying to implement an SPV client in python (for my own learning). I want to start by making a simple TCP connection to a full node, but I either cannot get a response to my version message, or ...
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2answers
76 views

library for validating bitcoin private and public keys

I am building a python script that gets a string and determines if it is a valid bitcoin private key or public key, and if so it returns its type/format (base58, BIP32, HexaDecimal etc.) and its ...
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1answer
60 views

Address generator error with python

I had created a script that creates a bitcoin private key, public key and address, for checking if all works fine I create one and check the private key on https://walletgenerator.net/, and it outputs ...
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290 views

How do I get bip32 public key and address from private key in python?

I have checked related questions and did not find answer. I also tried to use "secp256k1", "bip-0032", "seedrecover" and did not succeed. When my input is a private key ...
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2answers
419 views

How to use python rpc bitcoin to get the historical transaction record of a wallet address

How to use python rpc bitcoin to get the historical transaction record of a wallet address?My computer has synchronized all btc blocks, and txindex=1 has been configured. I want to try to get all the ...
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49 views

Parsing transaction hash from rawblock data

I got block raw data next url https://blockchain.info/rawblock/00000000000000000002447735c7723ee9188322c0938e6587866a4458b9135f?format=hex Can I find transaction hash in url used python?
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Can I get all block header data like the SPV node?

It hasn't been long since I studied Blockchain. I only need header data, not all block data, for study purposes. As far as I know, the SPV node stores only the block's header information. Can i get ...
2
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1answer
161 views

Cannot import python-bitcoinrpc

I am unable to import the package bitcoinrpc. I have installed it in python2 and python3 using python3 -m pip install python-bitcoinrpc/python -m pip install python-bitcoinrpc AND by cloning the repo ...
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1answer
4k views

Help needed with PyWallet and wallet dump using MacOS

Could anyone please give me some guidance on how to perform a wallet dump using PyWallet on a MacBook (macOS 10.12 Sierra)? I’m not very savvy with this stuff at all. Have an old wallet.dat file from ...
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2answers
728 views

convert private key to bitcoin address using python or php

I have private key like this 5JYJWrRd7sbqEzL9KR9dYTGrxyLqZEhPtnCtcvhC5t8ZvWgS9iC how to convert to bicoin address using python or php? example bitcoin address 18V7u8YNHKwG944TCkzYYj32hb6fdFPvQf
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1answer
58 views

How can bitinfocharts.com know the changes in BTC deposited to Binance?

I find this page here, which tells me how much BTC is deposited to Binance. How does this (or a similar) page work? When I deposit BTC to Binance, I am given an address, which I am fairly sure it's ...
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1answer
42 views

Calculate BitcoinGold Block Header Hash [closed]

I am trying to calculate block hash # 632295 { 'version': 536870912, 'prev_block_hash': '000000017590609fd72cadc5fd05732cfa1760bd882213afbb7b788c42e115c8', 'merkle_root': '...
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0answers
161 views

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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1answer
91 views

Is there such a service as an unlimited Bitcoin wallet with an API?

Well, I did tons of research and currently I'm using bitcoinlib for python to have a wallet which should be able to hold over one million addresses and occassionally broadcast transactions. It has ...
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1answer
67 views

I need a few lines of python to make WIF addresses

I have code which generates WIF keys from hex keys. It just need a few more lines to generate WIF addresses. ------------------------ import binascii, hashlib, base58, sys def convert(z): ...
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2answers
54 views

How can I execute `getnewaddress` at my full node from a remote server?

I have a full node running on a digital ocean droplet. I have an app running at heroku, and I want to execute getnewaddress from this app. I'm trying to generate BTC addresses to which users can send ...
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0answers
25 views

How can I ask for reward after mining? [duplicate]

Let's assume that I found the nonce for the block the world try to mine now. How can I say in python that this is the nonce and this is my wallet address so transfer the reward to it?! Note: This ...
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1answer
37 views

bip39 converting from entropy to seed failing tests with entropy “00000000000000000000000000000000”

Trying to convert hexadecimal string of entropy to seed sentence with the below snippet. Failing the first test with 16 zero bytes. It seems that my function came to conclusion that checksum is '1011' ...
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1answer
36 views

Why downloaded Block Size doesn't match with actual block size mentioned on network?

I am trying to download a block(Height:474044) using an API from here in python. Block is obviously downloaded in JSON format. But when I store it in a file on my system it shows very weird size ...
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1answer
502 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 ...
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1answer
48 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 = ...
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1answer
152 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 ...
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0answers
279 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: ...
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0answers
45 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 ...
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1answer
608 views

Decoding hex scriptsig in Python

Running decodescript on d1a076722d11ddfd0fadb96d6d960b8b2ad6c6369570cd00df70a801a6be9e44 is returning: { "asm": "0 ...
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1answer
158 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 ...
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0answers
30 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 ...
2
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1answer
108 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
84 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 ...
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1answer
257 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 ...

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