Questions tagged [bitcoinjs]
BitcoinJS allows you to create webpages that pull information from the blockchain.
21
questions with no upvoted or accepted answers
3
votes
0answers
209 views
BitcoinJS with no storage?
I have a use-case where I'd only need to be monitoring the mempool transactions and recently-committed blocks/transactions (the last month's worth of blocks would be sufficient). Is there a way to ...
2
votes
0answers
138 views
How to send & receive bitcoin using bitcoinjs-lib?
First I create HD Wallet using BIP32 using mnemonics.
Now I want to generate new child addresses with private key using xpub & xpriv for every receive.
Then for example, I received BTC in 2 ...
1
vote
2answers
28 views
How to verify the compressed signature in Bitcoin? It is 138 long in hex
I am using the bicoinjs-message npm module for signature verification.
I learned that there are few signatures which are of length 138 in hexadecimal.
When I tried to verify such a signature it is ...
1
vote
0answers
229 views
bitcoinjs-lib seems to skip a step in deriving addresses from a BIP 44 wallet
According to this wiki page to create a bitcoin address,
1) you have your public key of the properly derived path
2) Then SHA256 it
3) Then RIPEMD-160 it,
Add version byte at the front and boom ...
1
vote
0answers
71 views
Using blockcypher BitcoinJs at clientside is secure or not?
I am trying to create new transaction using bitcoinjs at client side.
Is it a secure way to create a transaction from Client side, which includes curl call.
Scenario, if I start from creating the new ...
1
vote
1answer
391 views
How to get unspents for inputs using bitcoinjs-lib?
I would like my simple wallet app to automatically select UTXOs for inputs. I realize that I can't accomplish this with just bitcoinjs, but is there something I can add to it to keep track of unspents?...
1
vote
0answers
105 views
BItcoinjs - safest way to manage wallet on a potentially untrusted device
As per the title, what would be the safest way to run a Bitcoin wallet on a potentially untrusted device, such as a mobile phone?
The question assumes the usage of bitcoinjs-lib (which allows, among ...
1
vote
0answers
1k views
Getting wallet balance with BitcoinJS + Bitcoin-lib (client lib)
I have server with BitcoinJS and Bitcoin ExitNode running. I try to fetch wallet balance from client with code from manual on wiki page. I have send money on client generated address, but app says ...
0
votes
0answers
31 views
Transaction w/ a P2WPKH input with nonWitnessUtxo
I am reading the testing code of bitcoinJS-lib and see the line below that is about "create (and broadcast via 3PBP) a Transaction, w/ a P2WPKH input with nonWitnessUtxo' ".
https://github....
0
votes
1answer
37 views
How to calculate fee in BitcoinJS raw transaction?
I have a transaction with 3 inputs and 2 outputs. 1output is the recipient and the other output is change address. How should I calculate the fee and apply it to output?
0
votes
0answers
101 views
Bitcoinjs Transactions using PSBT in Bitcoinjs Lib
I am trying to use the bitcoinjs lib to create a tx using PSBT
const testnet = Bitcoin.networks.testnet
const tx = new Bitcoin.Psbt(testnet)
I am not using transaction builder as it throws ...
0
votes
1answer
55 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
1answer
168 views
Tracking incoming transactions using nodejs and own node
I need to verify that user from my database has sent btc to my wallet.
Ideally I want to generate a unique address for each user transaction and then track all those addresses but I suppose it will ...
0
votes
0answers
23 views
How to use psbt.addBip32DerivationToInput
I want to include key derivation path for input in psbt file but do not understand how. I tried adding 'path: "m/44/0/0/0"' to addInput() but this does not seem to work. Then I found ...
0
votes
1answer
125 views
Why do I get: Error: <address> has no matching Script
The example code for psbt.addOutput() with address '1KRMKfeZcmosxALVYESdPNez1AP1mEtywp' works as expected. But if I change this to an testnet address I get this error: ' has no matching script'. I ...
0
votes
1answer
72 views
How to get Bitcoin input transaction hash string from bitcoinjslib Transaction object?
I'm using bitcoinjs-lib and its Transaction object. Transaction.ins is an array of objects, each which has a hash and script property. Both of these properties are Uint8Arrays.
I am trying to get ...
0
votes
0answers
31 views
Sign a Partially Signed rawtransaction with bitcoinjs-lib
I was trying to figure out how to use the bitcoinjs-lib. I was thinking if I could sign a partially signed raw transaction in bitcoijs-lib.
For example - If I have a hex String whose input1 is ...
0
votes
2answers
275 views
how to generate bitcoin adddres using seed?
Hi i am new to bitcoin all i want to know is how to generate address using mnemonic seed?
let testnet =Bitcoin.networks.testnet;
let keypair =Bitcoin.ECPair.makeRandom({network:testnet});
let address=...
0
votes
1answer
650 views
How to retrieve readable private key from bitcoinjs-lib
I'm still new to bitcoin and experimenting a lot with bitcoinjs-lib in JavaScript.
How do I create a readable string from a private key?
This is my current setup:
const seed = bip39....
0
votes
1answer
163 views
Looking for JS/Node.js code example to sign a transaction (with multiple UTXOs) with only the extended private key
Is there any Javascript code out there or examples on how to sign a transaction by using the extended-private-key?
What I am essentially looking for is code that will help derive the private key, ...
0
votes
1answer
108 views
how to create a transaction that can only run in bch-abc using javascript?
I use the "bitcoincashjs" or "bch-lib" and want to add a new opcode "OP_CHECKDATASIG" to output.How to do?
const utxo = {
'txId' : '...
