Questions tagged [javascript]
JavaScript is a high-level programming language widely used for web development.
118
questions
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How to sign a message with privateKey on Bitcoin using TS/JS?
I'm trying to sign the message to UniSat to this endpoint
Bind btcAddress and nftAddress.
Using code like:
import * as bitcoin from 'bitcoinjs-lib';
import * as ecc from 'tiny-secp256k1';
import * as ...
- 1
0
votes
1
answer
30
views
How can you make the most basic version of BTC Nodes/Peer to Peer communication?
I started to work on my version of blockchain, and for that, I read how everything works, and everything made sense. But when I got to Nodes/CConnman/CNode, after reading for a week, I understood most ...
0
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0
answers
51
views
Getting error for transferring BTC using node js code, getting error "No inputs were signed"
I am creating a system where users will raise a request to transfer them some BTC, in my code i am using all the previous utxos of my wallet to transfer BTC, even i am signing all the utxos still i am ...
2
votes
2
answers
86
views
After signing a message, how to verify the signature with JavaScript/TypeScript?
At the frontend, user signs an arbitrary message (e.g., "Sign this message to prove that you own this wallet"). We can do this via, for example, UniSat's signMessage function (see here).
I ...
- 173
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1
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90
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How to create and sign a segwit transaction using any npm pacakge
So I am using this NPM package ( https://www.npmjs.com/package/bitcore-lib )
to create and sign a Bitcoin legacy transaction locally and it was working fine for legacy.
But when I tried to do the same ...
4
votes
1
answer
103
views
Why is my P2WSH OP_IF/NOTIF argument not minimal?
I have created an HTLC with the following Bitcoin script using bitcoinlib-js:
const redeemScript = bitcoin.script.compile([
bitcoin.opcodes.OP_IF,
bitcoin.opcodes.OP_SHA256,
...
- 297
0
votes
1
answer
101
views
How to recover wallet from Master Private Key?
I've tried this approach to recover litecoin wallet, but it seem to print wrongly generated hashes (as I actually have wallet public and private keys for comparison), what can be wrong here? my wallet ...
- 1
1
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1
answer
59
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Using bitcore-p2p and bitcore-lib to get block data
I've prepared a Nodejs javascript script to (attempt to) fetch block information for an example testnet block (3) from the P2P network, using bitcore-p2p library (which uses the getdata P2P protocol, ...
- 958
0
votes
1
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203
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bitcoinjs - mandatory-script-verify-flag-failed (Signature must be zero for failed CHECK(MULTI)SIG operation)
I'm trying to follow the below transaction example by magic eden and extend it to support multiple buyers and seller (in red). However I am having difficulties when I add more than one signature from ...
1
vote
1
answer
182
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How to use BlockCypher's test network with BitcoinJS-lib?
Trying to make a PSBT via BitcoinJS-lib.
I'm using BlockCypher's internal testnet (bcy/test) because I have no choice: literally every other testnet faucet I tested was broken.
Using BlockCypher's API ...
- 115
1
vote
1
answer
239
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non-mandatory-script-verify-flag (Invalid Schnorr signature)
I try to put this into a Psbt:
Alice make payment to purchase an amount of BRC-20 from Bob
Bob request to inscribe a transfer of BRC-20 by using Burner account
Burner inscribe the transfer of BRC-20 ...
2
votes
1
answer
439
views
"Witness program hash mismatch" code -26 when broadcasting a transaction
I'm trying to broadcast a transaction to my RPC provider:
curl https://my-quicknode-rpc-provider/ \
-X POST \
-H "Content-Type: application/json" \
--data '{"method": &...
- 67
2
votes
1
answer
203
views
Getting Error while trying to decode psbt base64 to json using bitcoinjs/bip174 library
const base64PSBT = 'base_64';
// Decode the base64 PSBT to a Buffer
const psbtBuffer = Buffer.from(base64PSBT, 'base64');
// Parse the PSBT
const psbt = bip174.Psbt.fromBuffer(psbtBuffer);
// ...
0
votes
1
answer
268
views
Redeem script for input #0 doesn't match the scriptPubKey in the prevout
I'm trying to create a new bitcoin transaction using bitcoinjs-lib. Here is my transaction.
{
"weight" : 661,
"txid" : "...
- 33
3
votes
1
answer
1k
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How to build a transaction using bitcoinjs-lib
I'm trying to build a transaction using bitcoinjs-lib.
Here is my last transaction.
https://blockstream.info/api/tx/91feea5f5c7b67b3e56c0f5d23d6da3065855c23b4cc7dded8efd8ff8065500f
{
"weight&...
- 33
1
vote
1
answer
135
views
Do Bitcore APIs have daily limits?
I can't find online if the bitcore API (https://github.com/bitpay/bitcore/blob/master/packages/bitcore-node/docs/api-documentation.md) has daily limits for making requests, or if there is a need to ...
- 51
1
vote
0
answers
145
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Transactions only work the first time
I'm implementing the code to sign and send Bitcoin transactions on testnet, using the bitcore library, in javascript.
I need some help, as once I try to broadcast my transaction, it gives me this ...
- 51
0
votes
0
answers
281
views
Generate a Bitcoin taproot address with specific prefix for burning assets
I would like to generate a bitcoin taproot address (bc1p) for burning assets. Which means not one would have the private key. But in the mean time I would also want a vanity address (an address start ...
- 31
3
votes
1
answer
268
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How do descriptors work with miniscript in the library bitcoinerLab?
What I want is to be able to spend the funds from an address, either with its private key or with the private key of another address that I designate in the policy.
As I understand it, it works like ...
1
vote
1
answer
722
views
How to get the private key & wallet address using a multi-wallet recovery seed phrase?
How can I „convert“ a 12-words-long multi wallet seed phrase (of the Blockchain.com wallet) to the wallets private key and the wallets address using any programming language?
The given multi wallet ...
- 151
1
vote
1
answer
301
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How to send a Bitcoin transaction only using the seed phrase using NodeJS?
I am working on a NodeJS script that allows you to enter your 12-words-long Bitcoin secret recovery phrase and automatically withdraw all of your coins to a defined wallet address.
The script is for ...
- 151
0
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1
answer
45
views
Recreate Java code in python
I have a java code that I need to pass to python but I don't know which libraries to use and how to start and if you can help me I would really appreciate it
MNEMONIC = "twenty four mnemonic ...
- 19
2
votes
1
answer
329
views
Invalid checksum when generating BIP-39 Mnemonic
I am trying to generate a mnemonic seed in Javascript, and while everything seems to be working, I am not getting a mnemonic with a correct checksum. Here is my implementation:
export const ...
- 21
-1
votes
1
answer
950
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bitcoinjs-lib is installed but cannot use its functions
I've installed the latest version of bitcoinjs-lib but I cannot use the functions of the library.
const bitcoin = require('bitcoinjs-lib');
const keyPair = bitcoin.ECPair.makeRandom();
const { address ...
-1
votes
1
answer
197
views
How to implement stake.com model of deposit & withdraw flow for my crypto poker casino?
In stake.com for each user they generate separate bech32 address for deposit & displays the deposited amount as balance in top of the navigation bar.
Similarly for withdraw they just ask for the ...
1
vote
1
answer
462
views
How to make bitcoin hd wallet in typescript?
I am trying to create HD wallet for bitcoin.
I have developed an Ethereum wallet, but I am having a hard time making a Bitcoin wallet.
In my case, I am developing a server using Golang and Typescript.
...
- 13
4
votes
1
answer
4k
views
Uncaught TypeError: bip32.fromSeed is not a function
I am trying to run the below code to print the private key, the Public key and the mnemonics, but getting Uncaught TypeError: bip32.fromSeed is not a function :
//Import dependencies
const bip32 = ...
2
votes
1
answer
989
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Is there a Base58 encoder function that runs in pure javascript without node?
I see a lot of JavaScript Base58 encoder functions online, but all of them seem to require node. Is there a simple JavaScript Base58 encoder that will just run in the browser without any node ...
- 335
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votes
1
answer
153
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/...
- 103
1
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0
answers
91
views
Cannot unserialize chainstate transaction outputs after de-obfuscation
I was able to read chainstate database.
Getting the key and de-obfuscating to get a valid last block.
However, when it comes to transactions that follow after that,
I cannot de-serialize them no ...
- 111
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votes
1
answer
809
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generating a zprv from a base58 rootKey with bitcoinjs-lib
var bitcoin = require('bitcoinjs-lib');
let bip32 = require('bip32');
let rootKey = 'xprv9s21ZrQH143K32CfqoCQHtbKiEb5BqFazXX6jCtNCnuty3gUjxS4CsXWi9rcNyHdjDVPiC6P1bnyEZr2ioouRq56h6HAdwejeTty1BsSEtL'
...
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1
answer
416
views
Using Javascript, I want to generate a segwit private key (zprv) similarly to how I am generating my legacy base58 extended private key. How?
let bip32 = require('bip32');
let bip39 = require('bip39');
let { bech32, bech32m } = require('bech32')
const seed = bip39.mnemonicToSeedSync('rural catch say tooth tell soul road pilot fee board ...
2
votes
1
answer
295
views
How to spend from a custom P2SH script using bitcore-lib
My Javascript/typescript project uses bitcore-lib. It uses Script.buildScriptHashOut to build custom P2SH outputs. How do I spend from this custom output?
- 10.2k
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59
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Cryptocurrency Wallet 3rd party access
Do Crypto wallets such as Exodus etc have something like an API? For example is it possible to perform a cryptocurrency transaction directly from the web browser client (using the specified amount and ...
0
votes
1
answer
39
views
Distinguishing bitcoin deposits
If i had a central Bitcoin wallet, and then allowed 3 different people to deposit bitcoin into that address, would there be anyway to distinguish who they are, without knowing who's address is who, i ...
1
vote
0
answers
90
views
Bitcoin Script - Beautify
My question is if something exists to do the job in the opposite direction of miniscript.
Miniscript's intention is to help:
...writing (a subset of) Bitcoin Scripts in a structured way, enabling ...
- 31
1
vote
3
answers
2k
views
The best JavaScript libraries supporting Bitcoin Core?
I have downloaded and installed Bitcoin full node on my Linux server and I'd like to start working with the bitcoin core to create wallet, addresses, and transactions. What is the best JS libraries ...
- 11
1
vote
0
answers
217
views
How can I use PSBT in a JavaScript project?
I am trying to use PSBT in a Bitcoin project.
The idea is to generate keys and sign transactions client-side.
I am already familiar with bitcoinjs-lib but I find the API rather complicated.
It would ...
2
votes
0
answers
83
views
Sign transaction externally
I create a transaction with inputs from a given address / public key without signatures. Every input needs to be signed. I use a different method to generate the signatures so I can't provide a ...
- 121
1
vote
0
answers
671
views
bitcoind: How to get rawblock data with ZeroMQ
I am trying to use the zeromq api for bitcoind to get rawblock but its not working with the code I've provided below. I am able to get hashtx and rawtx if I remove the filter but not hashblock and ...
- 53
1
vote
2
answers
1k
views
Understand how transaction size and fees calculation works in caravan
Looks like there is no activity in caravan github repository so maybe someone here can help me with this issue. Already mentioned everything in the below link however my three basic questions are:
...
user103136
2
votes
0
answers
455
views
How to connect to an ElectrumX server using JavaScript WebSockets?
I'm trying to connect to an ElectrumX server from an HTML webpage. But I can't get a working connection.
I've tried with many servers from Electrum's servers.json list but none worked.
Here's the ...
- 143
1
vote
0
answers
29
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Is there any 'Metamask-like' app for Bitcoin? [duplicate]
9 months ago someone asked this same question: Metamask-like web3 inject for bitcoin but I was wondering if there had been be any changes since then.
I'm currently looking for a Chrome extension that ...
- 127
1
vote
1
answer
1k
views
How do I get old blocks while running a pruned node?
Hello I'm trying to build a NodeJS app that fetches Bitcoin blocks, potentially old ones, and I'm running into issues. I've downloaded Bitcoin Core but I don't have enough space to run a full node and ...
0
votes
2
answers
1k
views
Generating Bitcoin address from private key in browser console
I am a newbie Bitcoin evangelist and I have a recommendation to see all the code responsible for computing yourPublicKey from yourPrivateKey, especially for big deal addresses.
The easiest way to ...
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1
answer
88
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how to sign a multiple output transaction
currently i m using below code,how to add multiple address to address.
let transaction = new bitcore.Transaction()
transaction
.from(txoSet)
.to( ...
- 15
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votes
0
answers
93
views
How can i mine bitcoins to direct wallet using JavaScript?
I heard that we can mine bitcoins using javascript direct to the wallet?
How can I create Program, script or application which direct mines to the wallet & I even search online but did not get ...
user66539
0
votes
2
answers
278
views
How to get BTC transfer amount from raw tx using bitcoinjs
Suppose I have following object
console.log(bitcoinjs.Transaction.fromHex(rawTx));
The output
Transaction {
version: 2,
locktime: 1655960,
ins: [
{
hash: <Buffer dc 4d aa 10 db ...
0
votes
0
answers
197
views
broadcasting bitcoin transaction issue using bitcore-explorers
I have been trying to do a transaction using bitcore-lib. I have successfully created transaction object.
let bitcore_transaction = new bitcore.Transaction()
.from(utxos[0])
.to(to, +...
- 101
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votes
1
answer
49
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