Questions tagged [bitcoinj]
A Java library for processing Bitcoin, stores blockchain headers only
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1answer
68 views
how to get the sender's address in bitcoinj
I'm trying to modify the simple wallettemplate to get the sender's address in the transaction list. However since TransactionInput.getFromAddress() doesn't exist now and getConnectedOutput()....
0
votes
1answer
19 views
When downloading the blockchain my application is become unusable, is there an issue with my code or am I using the BitcoinJ library incorrectly?
I am building a Bitcoin wallet with the BitcoinJ Library, after looking at the example of fetching a transaction that they have shown on their github it shows that you need to download the blockchain ...
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0answers
32 views
Error when sending signed transaction with blockcypher api
Im using bitcoinj library and blockcypher api for creating wallet and transactions on Bitcoin Testnet.
I get this error when sending signed transaction.
"error": "Error validating generated ...
1
vote
1answer
62 views
Errors when building/sending multisig transactions
Going by the example here: https://bitcoinj.github.io/working-with-contracts
I believe I've done everything correctly. Yet my program fails either to propagate correctly or because of a tx error and ...
1
vote
1answer
105 views
bitcoinj java library not decoding input addresses for some transactions
I'm trying to "extract" sender's addresses from OP_RETURN Bitcoin transactions, but my code is not working properly.
getWalletAddressOfSender(final Transaction tx)
public static Address ...
0
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1answer
38 views
How to protect bitcoinj wallet?
I am a new BitcoinJ user, I have few questions related about its wallet, can anyone please help:
Is there any way to encrypt the .wallet file? will anyone obtain a copy of the file be able to spend ...
1
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1answer
235 views
i'm try to send raw transaction ,bug i got ……
Transaction transaction = new Transaction(params);
// 遍历未花费列表，组装合适的item
double sum = 0;
String address = null;
List<Unspent> unspents = new ArrayList<>();
Map<...
1
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0answers
25 views
What to pass in Transaction Input using Bitcoinj library
URGENT - Need help with setting up Transaction Input and Output objects
Transaction rawTransaction = new Transaction(params);
txnAmount = Coin.valueOf(50000000);
rawTransaction.addOutput(txnAmount, ...
1
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0answers
34 views
library for light-weight wallet : btcsuite or BitcoinJ [closed]
Do btcsuite + Neutrino(Lightning-lab) together provide sufficient foundation for light client capable to service onchain transactions (not multisig & not related to Payment Channels)?
Or is it ...
1
vote
1answer
108 views
Changed address
My address has changed but I'm showing 0.00mbtc. when I lookup the information on Blockchain it confirms 0.00 but then States the address has yet to be used on the network. I'm confused, please help.
0
votes
1answer
46 views
Adding an external key pair to a local bitcoinj wallet
I need to add a vanity address to a local wallet that I maintain using bitcoinj APIs. I'm not able to search for the vanity using bitcoinj APIs directly, on my local PC, because my vanity is too fancy....
1
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0answers
41 views
Bitcoinj Spend from a address directly without wallet
I am stuck trying to send coins from arbitary privateKey in bitcoinj. How can I make the following function work without using the Kit or Wallet classes?
@Override
public String transferCoin( ECKey ...
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1answer
292 views
Bitcoinj wallet can't receive coins in Testnet3
I have a problem with bitcoinj.
I have created a wallet and than trying to send coins to it in Testnet3 using this faucet:
https://coinfaucet.eu/en/btc-testnet/
Coins sended, transaction confirmed, ...
0
votes
1answer
100 views
Get private-keys from bitcoinj
I'm using bitcoinj library for bitcoin.
I want all private keys of all my generated addresses.
How can I achieve that? Please help who knows this answer.
Thanks.
0
votes
1answer
77 views
Can't see balance after some time
I'm trying to use bitcoinj library to receive bitcoin payments and monitor the balance on the address. My implementation is based on DeterministicKey watching public key. The code below is working ...
0
votes
1answer
77 views
Change derive path
I've used bitcoinj wallet and used derive path as below.
public static final ImmutableList<ChildNumber> ACCOUNT_ZERO_PATH = ImmutableList.of(ChildNumber.ZERO_HARDENED);
But I made changes in ...
0
votes
1answer
58 views
Bitcoinj Standard
I'm using bitcoinj for transferring bitcoin.
I don't know which standard bitcoinj supports?
Bip32, Bip39, or Bip44
Please help who knows the answer.
Also I want convert bitcoinj standard to Bip44.
...
1
vote
1answer
207 views
Get private-keys from wallet using bitcoinj
I'm using bitcoinj for transferring bitcoin.
Now I want to export private key of my wallet.
So how can I get the private key from bitcoinj?
1
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0answers
39 views
Send funds from a specific address with bitcoinj
I have two addresses in my wallet.
I use one of them as a buffer and clients can receive money only from that address.
How can I send money from a specific address?
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votes
1answer
105 views
Issue with the BitcoinJ for Litecoin. Which dependency can be used for Litecoin?
I've created a crypto-currency wallet for Bitcoin using BitcoinJ. Now I want to add Litecoin in this wallet. How to implement BitcoinJ dependency for Litecoin?
While using BitcoinJ for both Litecoin ...
0
votes
1answer
112 views
Does exist some library for decode/encode raw transaction?
I want to parse raw transaction into JSON then change some values and encode back to hex. JSON like this:
{
"addresses": [
"346vcZZ6QV4nr68fybMEuA7qxxQeyKWoPS"
],
"block_height": -1,
"...
1
vote
1answer
27 views
Trying to run the Main file of the wallet template from bitcoinj but JavaFX not found
Trying to run the Main file of the wallet template from bitcoinj but JavaFX not found. When I run the main file of the wallettemplate I get multiple errors of javafx packages not found. When I try to ...
0
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1answer
98 views
Sign Bitcoin transaction with several inputs using bitcoinj. Broadcasting of transaction failed
Good day!
I'm working with low level API to make tx and sign it offline. But after all preparations I try to broadcast it and than i get an error from network:
16: mandatory-script-verify-flag-...
1
vote
2answers
82 views
Is there any RPC Java library using which I can call lite coin methods? [closed]
In case of bitcoin there is bitcoinj. but in Litecoin what will I use?
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1answer
102 views
Restore from 24 words seed
I have used bitcoinj for createting wallet. I made some changes and try to generate 24 words seed instead of 12 words seed.
When I try to restore from 24 words seed, at that time I am using 3 method ...
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1answer
211 views
convert 12 word seed into 24 word seed
I used bitcoinj library for wallet and it generates 12 word mnemonic seed.
But I made changes in it and created 24 word mnemonic seed.
But I need to convert old 12 word mnemonic seed into new 24 ...
0
votes
1answer
142 views
Problematic Digital Signature with SECP256K1
I am trying to test out TestNet3 and I have a keypair generated using Java crypto library.
The private key is 23F847360E1EB348A212F443C633058080A8EB9F05AD132F8B82D51FE672EADD and the public key is ...
0
votes
2answers
160 views
BitcoinJ how to understand receive Address?
I need to receive bitcoins from the customers, and then add to theirs virtual account some credits. I use BitcoinJ wallet and I want to give each customer the unique Address created by
walletAppKit....
1
vote
3answers
370 views
How to derive segwit addresses from an extended public key?
I tried to use the following code:
DeterministicKey key = DeterministicKey.deserializeB58(null , "xpub...", MAINNET);
DeterministicHierarchy hierarchy = new DeterministicHierarchy(key)
;
...
1
vote
1answer
58 views
Does wallet support multi account/user?
Does bitcoinj wallet support multiple accounts/users?
It seems BIP44 is not supported and found multiple threads indicating lack of support.
Just wanna get a definitely answer. If not yet, any plan ...
2
votes
0answers
209 views
Broadcasting signed transaction from Watching wallet using bitcoinj
I am working with watching wallet and Offline wallet using bitcoinj,
I created Watching Wallet using tpub key of Offline Wallet
I am receiving payment on watching wallet Fine,
now I want to ...
1
vote
1answer
273 views
What is the difference between bitcoin core vs bitcoinj vs bitcoind vs bitcoinqt?
What is the difference between bitcoin-core vs bitcoinj vs bitcoind vs bitcoin-tx vs bitcoin-cli vs bitcoinqt?
There are many github repo with different names around bitcoin.
Can someone really help ...
2
votes
1answer
73 views
Handling fees and setting them
Im trying to get the estimation of how much the fees will be when a final amount is decided on. I would say im getting familiar with bitcoinj but not completely with java so im still learning how to ...
0
votes
1answer
104 views
connect watching wallet with blockchain
i have created watch wallet
Wallet wallet = Wallet.fromWatchingKeyB58(params, tPub, DeterministicHierarchy.BIP32_STANDARDISATION_TIME_SECS);
How can i link this with block chain
i am using ...
2
votes
1answer
401 views
how to create Watching Address from available xPub key
Watch-only wallet can only receive payments but not spend the available coins. I am using bitcoinj (in Java).
Can anyone please tell me that How to create watching addresses from available xPub key? ...
1
vote
0answers
125 views
how to create unsigned transaction by hot wallet which is retrieved from watchingKey
via Bitcoinj , i am trying to create hot wallet as front used to get balance , create unsigned transaction (corresponding , i have cold wallet forever be offline used to sign transaction only)
My ...
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votes
1answer
101 views
Transaction not broadcasting on peer network(Blockchain)
I am using Bitcoinj and doing the transaction and I am getting the TX hash but the hash is not showing in any explorer site
SendRequest finalReq = SendRequest.to(toAddress, Coin.parseCoin(ammount)....
0
votes
1answer
260 views
BitcoinJ : Balance and Transaction are not showing in wallet after restoring wallet from MnemonicCode
I have created a wallet with the help of WalletAppKit on Android and did some transaction in it.
Now what I try to do is, restoring that wallet from mnemonic code (BIP39). It also returns the Wallet ...
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votes
1answer
174 views
BIP 84, BIP 173 Implementation in BitcoinJ
Can BitcoinJ (Java) supports complete implementations of BIP 173, BIP 84?
How can segwit address can be created using BitcoinJ for SPV wallet?
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1answer
116 views
How to get confirmation of transaction using Bitcoin j implementaion
I am using BitcoinJ lib for creating wallet and transaction.But now I want to know the confirmation count.So, is there any method which can give confirmation count
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votes
1answer
422 views
generate wallet addresses from extended public key
i am trying to generate addresses from Extended Public Key using bitcoinj but can't figure out, how can i possibly do this.
i need those addresses for watch-only wallet, those addresses were
...
0
votes
1answer
78 views
Cancel pending transaction (bitcoinj)
I'm using bitcoincashj (https://github.com/bitcoinj-cash/bitcoinj) I created a transaction and sent it. But it didn't broadcasted to network. Can I cancel this transaction?
Current wallet status is:
...
0
votes
1answer
179 views
Bitcoinj unable to load wallet
So I want to load a wallet and get its balance also sending some funds with the corresponding wallet, here is my code
public class DumpWallet {
public static void main(String[] args) throws Exception ...
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votes
2answers
258 views
Transaction history with bitcoinj
I am new to bitcoinj. I want to print out the list of transactions like as follow for a wallet:
1- Sent 1 BTC to Adress1 on 'A' Time
2- Received 5 BTC from Adress2 on 'B' time
3- Sent 2 BTC to ...
0
votes
1answer
123 views
How to size in bytes for a transaction using BitcoinJ
The calculation of a transaction fee uses fee/kb. So how do I get the size in bytes for a transaction using BitcoinJ?
SendRequest req = SendRequest.to(address, value);
req.feePerKb = Coin.parseCoin("...
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votes
1answer
399 views
How can i switch from BIP32 to BIP44 using bitcoinj
i am working on a wallet that is using BIP32 for creating Accounts, addresses, xpub, public keys, transaction and etc. but now i want to switch from BIP32 to BIP 44. how can i do this using bitcoinj i ...
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votes
1answer
364 views
can i use one Mnemonic Code to create both(TestNet and MainNet) wallets
currently i am using bitcoinj library to create wallet for both Main-net and Test-net using Mnemonic code(Mnemonic Code is different for both), my question is can i create both Wallets(Test-net and ...
2
votes
1answer
523 views
How to create an offline wallet on Android only to sign transaction
I am new to bitcoins, I want to create an offline wallet on Android, to scan transaction QR code from online Desktop wallet, Sign that transaction with private key on my offline wallet.
1 Creating ...
1
vote
3answers
900 views
How to get compressed public key with ECKey
Here some java code. What i need to change to get compressed public address in getPublicAddress?
import com.google.bitcoin.core.Address;
import com.google.bitcoin.core.ECKey;
import com.google....
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votes
1answer
115 views
how to convert URI into Bip21
i am trying to convert the
URI into BIP21
currently i am generating URI from bitcoinj library, but i want it to be on BIP21 Standard. i have read many articles but didn't found any solution
