Questions tagged [python]
Python is an interpreted, general-purpose high-level programming language whose design philosophy emphasizes code readability.
187
questions
0
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15 views
open source server for bitcoin wallet [closed]
For my simple bitcoin wallet, I use the blockcypher.com api.
There is a problem due to the limitation of the number of requests for api, so I need to make my "api blockcypher.com", which would be ...
0
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1answer
16 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
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1answer
16 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pip package https://pypi.org/project/bitcoin/ was originally developed by Vitalik Buterin (that Ethereum guy) but is no longer maintained.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
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1answer
50 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
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1answer
24 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
81 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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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 ...
0
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0answers
56 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
18 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
49 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
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1answer
33 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
23 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
30 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
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0answers
63 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
51 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
59 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
32 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
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2answers
59 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
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1answer
95 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
42 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
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0answers
103 views
How to sign bitcoin raw transactions with Python offline
I have a raw bitcoin transaction created using createrawtransaction
unsigned_tx = "...
0
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1answer
52 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
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0answers
61 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
33 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
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0answers
73 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
52 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
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1answer
52 views
Dogecoin Scrypt mining hashes python [closed]
I know making a miner in python is inefficient and unprofitable, however I would like to do it as an experiment. What exactly is the code to generate a Dogecoin Scrypt mining hash in python? For ...
0
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0answers
120 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
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0answers
68 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
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1answer
40 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
252 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
53 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
56 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
120 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
288 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
votes
1answer
66 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 ...
3
votes
0answers
159 views
Python library for Multisignature HD wallets
Is there is any python library is available that allow creation of Multisignature HD wallets ?
0
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1answer
983 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 ...
0
votes
1answer
432 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
votes
1answer
67 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 ...
0
votes
1answer
83 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 ...
1
vote
0answers
23 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...
0
votes
1answer
49 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
366 views
How to fetch the latest unspent transaction by an address using bitcoind?
I want to build a server, which provide following APIs:
1.Get balance by address.
2.Get latest unspent transaction.
3.broadcast the transaction.
First by first, I know I can do above stuffes by ...
1
vote
2answers
56 views
Why are my Signature Scripts Different from my professors?
bob_addr = "1NWzVg38ggPoVGAG2VWt6ktdWMaV6S1pJk"#"1FMb8Jnn1jSh7yjDFfonC8xCCH3ittoEzB"
bob_hashed_pubkey = base58check.b58decode(bob_addr)[1:]
bob2_hashed_pubkey = b'\xec\x06\xb2\xbf\x18\xc8\x97\x06\...
0
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1answer
88 views
bitcoinrpc.authproxy.JSONRPCException: -26: 16: bad-txns-in-belowout
I am getting this exception, when I am using sendrawtransaction. And all I want to do is translate this docs to Python code, and I have searched for a while but both Can anyone shed any light on this ...
1
vote
1answer
77 views
Is it possible to deploy a python script on Ethereum Virtual Network or NEO? [closed]
Is it possible to deploy a python script as a dApp on the Ethereum or NEO virtual network?
1
vote
3answers
1k views
How to generate public and private key pairs from the 12 seed words in python
I basically followed the instructions here How to generate mycelium addresses from the 12 words in python
So my code is similar:
from bip32utils import BIP32Key
from bip32utils import BIP32_HARDEN
...
0
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0answers
103 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
259 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 ...
