2022 Developer Survey is open! Take survey.

Questions tagged [library]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1 vote
1 answer
35 views

Standard library for schnorr signature algorithm

I am trying to create a blockchain demonstration to get used to the technology. The thing is: I want to use Schnorr signatures, but I can't seem to find a library for that, and I want to make sure ...
user avatar
0 votes
0 answers
46 views

C# Bitcoin class - Create unique btc address for each order - make deposit & withdraw

I am looking for a good library in c# for bitcoin as payment method in my web site. My purposes from this library : Create unique btc address for each order deposit job with callback url withdraw job ...
user avatar
0 votes
0 answers
23 views

Listener for deposits | ZeroMQ

I want to create a listener for BTC deposits in a multitude of addresses that I'd control, and which would run continuously. After doing some research, I found out that the best way would be through ...
user avatar
  • 123
0 votes
0 answers
17 views

how to buy library credits

which exchange should I buy library credits on? I tried buying from the odysee website but it doesn't take my credit card. I also tried to start a bittrex account but it doesn't let me create an ...
user avatar
  • 101
0 votes
1 answer
235 views

How to set up a listener on an address, and trigger events upon receiving transaction?

I have a task where I need to set up some sort of a listener on a particular bitcoin addresses for incoming transactions, and once a transaction arrives, I need to call some function in my web service....
user avatar
0 votes
1 answer
25 views

What are some different ways to retrieve btc transaction information of an address using bitcoinjs?

What are some different ways to retrieve btc transaction information of an address using bitcoinjs? I've tried using the syntax from this page (https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/...
user avatar
0 votes
3 answers
97 views

How to create a Crypto wallet for a start up(Bitcoin and Ethereum)?

I have beginner skills as Full stack Developer and am looking to help developing a crypto wallet with a small start up. The idea is to create a wallet that will store our users cryptocurrencies (with ...
user avatar
  • 1
0 votes
0 answers
16 views

How to create signature for the payload (data)using private key in java with bitcoinj? [duplicate]

I have private key as 'cUN9LNcEC54HAbWAwUs6coPSc72TcQYzxf4qSqdHJPVKSapeHzFj' and payload as 'hello', now how to create the signature for this payload using private key in java with bitcoinj library? ...
user avatar
0 votes
1 answer
73 views

libbtc: Where are the binaries generated?

I installed and compiled libbtc from https://github.com/libbtc/libbtc, but where are the binaries generated or how can I compile my C project with gcc using it? My OS is Ubuntu 20.04. I am running: ./...
user avatar
1 vote
1 answer
64 views

bitcoin core RPC vs bitcoin libraries

What is the main difference between using one of the bitcoin libraries to create a project and using bitcoin core json RPC API directly by connecting to your node for everything? If the library has no ...
user avatar
0 votes
1 answer
190 views

How to use getblocktemplate method with Bitcoinlib Library

I am using bitcoinlib to communicate with bitcoin-qt This is the code i tried: Dim BitcoinService As Services.RpcServices.RpcService.IRpcService = New Services.Coins.Bitcoin.BitcoinService("http:...
user avatar
  • 176
2 votes
1 answer
88 views

Why is a library's signature of a segwit tx different from Bitcoin Core signature?

I have been writing a (yet another) Bitcoin python library primarily for educational purposes; for me and my students. Signing a non-segwit transaction results in a signed tx that is identical to ...
user avatar
  • 2,204
1 vote
1 answer
75 views

Why are exactly 4 bit windows used in the lookup table of libsecp256k1 to speed up point multiplications?

From the Readme of secp256k1 we can see the following: Use a precomputed table of multiples of powers of 16 multiplied with the generator, so general multiplication becomes a series of additions. I ...
user avatar
0 votes
1 answer
91 views

Number of bitcoins mined algorithm

Is there a library to know the number of bitcoin mined at a given block number ?
user avatar
  • 117
1 vote
1 answer
106 views

call to bip39_mnemonic_from_bytes in libwally-core returns NULL

what am I doing wrong? it always returns with error -2... I included libwallycore to my project and my IDE tells me it it is available after I also did include <wally_bib39.h> I tried mainting ...
user avatar
0 votes
2 answers
909 views

How to change network on BitcoinJS-lib with Coininfo and generate Dogecoin address?

Can't find out how to change network on BitcoinJS-lib with Coininfo and generate Dogecoin address? In a Coininfo's example I found this: https://github.com/cryptocoinjs/coininfo#want-to-use-with-...
user avatar
2 votes
1 answer
374 views

Which approach is better to interract with Bitcoin node : Rpc call or Library?

I think library like BitcoinJ or python-bitcoin does the same (rpc call in the background). If that is true is there any reason behind using such libries in place of rpc call For example: (in case ...
user avatar
  • 524
1 vote
0 answers
210 views

Adding libraries to Makefile.am [closed]

I am trying to add already existing library below to dash source code : Jerasure I have included all the source and header files in a directory 'jerasure' inside 'src'. In the Makefile.am , I have ...
user avatar
2 votes
3 answers
3k views

Bitcoin library in python

I need a good library for bitcoin and other BTC-like cryptocurrencies in python. I'm looking for something similar to bitcoinjs but in python. Minimal requirements: generate an EC keypair and get ...
user avatar
  • 121
1 vote
2 answers
186 views

Bitcoin library vs script to develop application

I'm curious about the development of application of Identity management in Blockchain platform, but I'm a bit confused about the technologies to use. In short words, when is more convenient to develop ...
user avatar
  • 113
0 votes
1 answer
869 views

Is there a Bitcoin mining library?

I write free software in my spare time. Some of my softwares are quite popular. Now i'm a thinking of a way to generate a little revenue. Using adware is not an option for me. Is there a Bitcoin ...
user avatar
  • 3
1 vote
0 answers
42 views

Is there a java library which could extract the first seen date and the last seen date of an address over a bitcoin network?

Apparently the bitcoinj does not provide such feature.
user avatar
  • 293
2 votes
1 answer
3k views

NBitcoin: signing a transaction in TestNet

I am using the NBitcoin Library to program a simple Bitcoin Transfer Program in C#. The Program will take the coins from a Transaction ID and then Transfer it to a Destination Wallet Address The ...
user avatar
1 vote
3 answers
2k views

Library for generating HD keys/addresses (ideally for python)

I require a library that I can create (and later import) a HD master key, which I will use to generate hundreds of addresses for both testnet and mainnet! Ideally, I need a python library (but had ...
user avatar
  • 2,204
2 votes
0 answers
452 views

Bitcoin c++ library that provides the networking

I want to make a very simple Bitcoin mining software with use of getblocktemplate, my own SHA and block building. Is there any c or better c++ library that would help with the networking part? I am ...
user avatar
  • 43
2 votes
1 answer
147 views

micropayment channels, n-m addresses, interoperability

I just read bitcoinJ's working with contracts tutorial and I am puzzled as: it seems to me that n-m addresses are implemented in Bitcoinj using plain multisig (as defined in this bit of the developer'...
user avatar
  • 631
1 vote
1 answer
2k views

Can I run bitcoind without BerkeleyDB 4.8 installed?

I am using a CentOS server to build Bitcoin from source. After installing all of Bitcoin's dependancies on this build server, I have successfully built bitcoind and bitcoin-cli (the two binaries that ...
user avatar
-1 votes
1 answer
1k views

Block Chain Library

I was wondering if there are any open source blockchain libs that I could use to build a project with? UPDATED I agree. With my knowledge of bitcoin now and blockchain - I should have phrased this ...
user avatar
  • 121
4 votes
1 answer
3k views

Are there any blockchain inspection tools/libraries?

I am going to write software that gets information from the blockchain directly. Are there any tools or libraries to speed up that process? I am looking for things like decoding and encoding ...
user avatar
  • 183
3 votes
2 answers
2k views

What Ripple API libraries are available?

I am wondering, what libraries are out there for communicating with Ripple through its API (either websocket or JSON RPC)?
user avatar
  • 42.7k
0 votes
2 answers
655 views

BitWasp Installation Problem

I just uploaded the BitWasp code into /var/www but when I tried to install using extension BitWasp-master/install/index.php the installation page that I need to make config.php, database.php, and ...
user avatar
4 votes
2 answers
2k views

Library for trading on major exchanges

Is there a library which exposes order-book and trading functionality of major exchanges like BTC-e, Bitfinex, Cryptsy etc. ? I know these site have their own API but I wanted to re-use the code, if ...
user avatar
  • 153
5 votes
2 answers
6k views

How to make a simple payment with the python-bitcoinlib?

I've been using the bitcoin-python library for making payments from within Python. This worked pretty simple: >>> import bitcoinrpc >>> conn = bitcoinrpc.connect_to_local() >>&...
user avatar
  • 315
1 vote
2 answers
344 views

Does there exist a SPV-client in another language than Java?

The only (active) project I know that implements a full SPV client is BitcoinJ, which is written in Java. Does somebody know if there are any SPV implementations in other languages (like C) too?
user avatar
  • 1,957
1 vote
1 answer
153 views

How to connect to several Bitcoin nodes using Bitcoin

I'm looking for a way to connect to several Bitcoin nodes using Python... I've been looking in different Bitcoin-for-Python libraries, but I haven't found anything :( What should I do?
user avatar
  • 111
7 votes
4 answers
4k views

Is there bitcoin implementation in python or C#?

I want to play with the implementation to better understand the inner workings of Bitcoin. I'm familiar mostly with python and C# and found no clients in either of the languages. My C skills are rusty ...
user avatar
2 votes
1 answer
1k views

Why is my /Library/Application Support/Bitcoin directory missing?

I can't launch the latest update, now it just 'unexpectedly quits' before loading. I tried uninstalling and reinstalling a couple of the past versions, but the directory folder was never created. ...
user avatar
  • 21
8 votes
3 answers
8k views

How to move Bitcoin data from Application Support on an external drive [Mac]

I'd like to put all my Bitcoin data on an external drive instead of having it on my hard drive, as it's taking too much space on my laptop. I did find an answer on this page regarding how to create a ...
user avatar
  • 81
8 votes
5 answers
3k views

Which programming languages support secp256k1?

Which programming languages have some ready libraries that support Bitcoin's ECDSA curve - secp256k1?
user avatar
  • 42.7k
3 votes
3 answers
351 views

Address creation in standard client - random library?

Is the random library used by the standard client in any way deterministic, or can one count on it being truly random? For example, often random libraries are initialized with seed value of the ...
user avatar
  • 42.7k
10 votes
4 answers
1k views

Are there any Scala libraries/implementations/projects on bitcoin?

There are quite a few Java libraries and I am building my Scala code on BitcoinJ, but obviously, native Scala libraries would be quite a bit more elegant. Has anyone tried?
user avatar