Questions tagged [python]

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

44 questions with no upvoted or accepted answers
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3
votes
1answer
208 views

Python library for Multisignature HD wallets

Is there is any python library is available that allow creation of Multisignature HD wallets ?
2
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0answers
36 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 ...
2
votes
1answer
2k views

python-bitcoinlib | Create Private Keys, Public Keys and Addresses - How to Do It?

I'm trying to use the python-bitcoinlib library but its docs aren't entirely clear to me. I'm a programmer but quite new to Python, and not very versed in the Bitcoin protocol. What's the process, ...
2
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0answers
821 views

I can't connect to RPC from python. JSONRPCException: -342

Tryed to run this code : from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException import logging import json logging.basicConfig() logging.getLogger("BitcoinRPC").setLevel(logging.DEBUG) ...
2
votes
1answer
348 views

Python code to vb.net (2012) - help me to eliminate the errors

I wanted to convert the following bitcoin mining python code to VB.net (2012) and I tried to convert it's functionality, but it throws some errors and I'm stuck as I even can't get the resulting value ...
2
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0answers
458 views

How to add blockchain.info API key to pibitcointools

I have a query-intensive app I'm building that keeps timing out with the message: Traceback (most recent call last): File "test.py", line 72, in <module> array = bitcoin.multiaccess (...
2
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1answer
596 views

What is the required input for python-bitcoinlib getrawtransaction command?

I am running a bitcoin node on my machine, fully synced with RPC commands enabled, rpc server live and txindex=1. In the command-line I can run the following RPC call and obtain the information ...
1
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0answers
36 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 ...
1
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0answers
243 views

How to sign bitcoin raw transactions with Python offline

I have a raw bitcoin transaction created using createrawtransaction unsigned_tx = "...
1
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1answer
441 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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0answers
25 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...
1
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0answers
139 views

getblockchaininfo timeout using API only

Thanks in advance. If I call getblockchaininfo through bitcoin-cli it just works. It might take a while but it works all the time. If I call it from within a Python Script from bitcoin.rpc import ...
1
vote
1answer
375 views

How to recover wallet by importing private key on testnet?

I want to test the functionality of wallet recovery via private key import on the testnet. Preferably thru an online service. I only want to test the functionality so that I can verify that it's ...
1
vote
0answers
375 views

Having trouble using GDAX API to place market buy order

Here is the documentation I'm following and to place a buy order, the syntax follows the following format: # Buy 0.01 BTC @ 100 USD auth_client.buy(price='100.00', #USD size='0.01', #...
1
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0answers
200 views

What is the Best Way to Learn python-bitcoinlib?

I have tried to find tutorials everywhere, but can't find anything. Is there any step by step guide to use the library?
1
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0answers
279 views

Running trezorctl / python-trezor on macOS Sierra

As I am not familiar with python I am currently having trouble getting trezorctl running. After installing pip and running pip install trezor from my admin account I get the following error message ...
1
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0answers
764 views

Electrum - using a fixed fee regardless of transaction size

I am using Electrum 2.7.12, and I intend to use the python console to paytomany() while using a fixed fee. I have tried following directions from http://matt.ramuta.me/blog/1419787186410-how-to-write-...
1
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0answers
148 views

Troubleshooting pybitcointools: signing transaction valid only for certain hash values

From my pybitcointools fork's issues: I'm having some weird issues with the signature sometimes it works and other times it doesn't. When I see '[ALL]' in scriptSig that's when I know it's ...
1
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0answers
439 views

Is there any library to process scriptSig script in transaction, and other scripts?

I'm trying to parse hex representation of scriptSig, in normal transactions there are variable int, r&s, pubkey. But some are really weird, like those ones: ...
1
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0answers
453 views

How to get bitcoin address from the pubkey_hash using bitcoin-abe or something else?

I'm using: https://github.com/bitcoin-abe/bitcoin-abe to import the blockchain into a mysql DB it is almost done after 5 days. So I started looking at the data and didn't see any addresses. I know the ...
0
votes
1answer
33 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): ...
0
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0answers
18 views

Blockcypher make_tx_signatures “Bad Signature” error

I am having trouble to sign a transaction on Blockcypher Test Network (using python): import requests from blockcypher ( import send_faucet_coins, create_unsigned_tx, make_tx_signatures, ...
0
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0answers
48 views

How to construct and redeem a bip199 htlc with python-bitcoinlib

Playing with this script, I'd like to understand how to construct a bip199 htlc and redeem it, however this script fails on the OP_EQUALVERIFY and I can't seem to understand why. I'd like an ...
0
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0answers
100 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: ...
0
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0answers
28 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 ...
0
votes
1answer
56 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 ...
0
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0answers
15 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
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0answers
133 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
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2answers
155 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
23 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 ...
0
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1answer
50 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
1answer
159 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
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1answer
116 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: ...
0
votes
2answers
104 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
258 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 ...
0
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0answers
107 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
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0answers
189 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
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0answers
285 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
1answer
107 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 ...
0
votes
1answer
76 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 ...
0
votes
1answer
271 views

Pycoin: How to sign SegWit transaction via Pycoin?

My target is to make transaction with unspent transaction outputs(UTXOS). The information of UTXOs is as follow. [ { "pt_idx": 0, "subaccount": 37, "ga_asset_id": 1, "value": "...
0
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0answers
121 views

Issues when attempting to get accounts using the GDAX API

Here is the github I have working with: https://github.com/danpaquin/gdax-python When I run the following code: auth_client.get_accounts() I'm getting the following error: TypeError: expected ...
0
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0answers
223 views

Help with multi-input transaction by code

I'm trying to consolidate multiple inputs into a single output, all left over is for the miner. When I send my transaction to a peer, it is never mined. I believe something is invalid in the multi-...
0
votes
1answer
443 views

How to generate Electrum address with pybitcointools

I want to create a payment service where I want to be able to charge each client according to its invoice. I picked Electrum as my underlying wallet and pybitcontools as my Python interface. I would ...