Questions tagged [wallet]

This tag should be used for questions that pertain to wallet software. A wallet software is a piece of software which manages users' keypairs, addresses, and transactions. Wallet software also allow a user to send and receive Bitcoin.

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2answers
182 views

NBitcoin, how to implement wallet restoration? How does it work?

at first sorry for my ignorance, I have little experience at bitcoin programming. Im trying to implement a very simple wallet using NBitcoin library. I have done some work, but now Im stucked with ...
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0answers
11 views

I have pending transactions in my wallet yet I can't find it anywhere

I have pending transactions in my wallet yet I can't find it anywhere , can you assist please
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1answer
22 views

How Do Attackers Forge Bitcoin Blocks And How Do You Identify Forge Bitcoin Blocks?

I have read that a block contains several bitcoin transactions and an attacker can forge fake blocks. Does these forged fake bitcoin blocks cost the attackers money for mining or was it just ...
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4answers
46k views

What are QR codes and How do you use them as request payment from Wallet?

What are QR codes ? How do you use the QR code for payment function on the wallet ? When would you use it ?
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1answer
51 views

Sweeping paper sweeping private keys from 2009-2010 into electrum wallet

I have several wallets from 2009 and 2010 that have not been touched since day one.I recieved 25 dollars USD worth of BTC for downloading and running a program in the background. Im guessing i was ...
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0answers
19 views

Multi currency wallet (Universal wallet)

I would like to create a multi currency wallet as a POC. I am currently able to make a wallet for Ethereum (Like balance, tx and all) but would like to create it for other as well (like Bitcoin). I ...
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3answers
2k views

What happens if I send bitcoins to my private key instead of my actual bitcoin address?

I recently used the website https://www.bitbrothersllc.com/Bitbrothersllc/Welcome.html to obtain my bitcoins, but when I was asked what address to send my coins to, I accidentally put down my wallet's ...
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1answer
33 views

How to generate new address wallet ? I want to use it per customer

I want to create an exchange site using API. How can I check that my customer had a deposit without using a transaction number? I want to create a new address wallet per customer how can I do it? I'...
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1answer
20 views

BITCOINJ: how to make my wallet aware again about change of my transaction status after my server restart?

Using bitcoinj, my server created a transaction and it was broadcasted on the blockchain. I can get its history using: walletAppKit.wallet().getTransaction(txHash) It is in Pending state. Then I ...
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0answers
15 views

Fund single output in PSBT with bitcoind

I would like to create a PSBT with a single output (P2WSH with a given/predefined amount) in an app and give that to the user. The user should then be able to fund this PSBT with the help of bitcoind ...
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0answers
17 views

Blockchain/ 24trades.com [closed]

Hi everyone does anyone here knows about 24trades.com are they legit? I made investment with them so for me to get access to the funds i am asked to buy/pay for the blockchain private key!
2
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1answer
356 views

Broadcast a Transaction

I have a: Wallet public/private key pair with X BTC Wallet Address I want to sent Y BTC to I'm developing an app in NodeJS and trying to initiate payments automatically. I'm very confused how I'm ...
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1answer
70 views

Bcoiner wallet - balance is showing as zero?

please help! I sent to my wallet 450 dolars of bitcoin, and transactions are confirmed strongly 62 times, but my wallet says that I have 0 bitcoins to spent and I cant sell it!!! What to do? Whats ...
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2answers
2k views

Can I claim Segwit2X with a blockchain.info wallet?

I have a blockchain.info wallet, but I am not sure whether I would be able to claim segwit2x? Thanks in advance.
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3answers
634 views

How does a wallet get the public key from an address?

I was under the impression that addresses are just an encoded, hashed public keys with a prefix and that only the public key is used on the blockchain (not the address) for transactions. But if the ...
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1answer
28 views

MITM attack in hosted wallets

i have a question: in the web wallets(hosted wallets)when user want to make a transaction and send the information to the wallet server , can a one change the information(man in the middle attack)?
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2answers
29 views

Segwit Bitcoin Transaction Signing

As I could understand, we can recover the R and the S values from any transaction following the ScriptSig where we have DER serialization. Segwit transactions, where the signature will be in the ...
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1answer
37 views

Segwit with Multisig

I was analyzing a Bitcoin transaction that works both with Segwit and non-Segwit for multisig Scripts. Here is the transaction: https://www.blockchain.com/en/btc/tx/...
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0answers
16 views

having a problem with python code,bitcoin, (pip install bitcoin),ill bold the area where I think my issue is [closed]

I want to save a wallet, here is a small code as an example, I do not know where the code begins or ends here, and whether to paste this in the command interface, or the text editor like is mentioned ...
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1answer
23 views

Receiving transactions in prune mode

I am new to Bitcoin. I have downloaded the whole blockchain but I still can't access my wallets because I get a popup telling me to use prune mode. My question is: I know that I have received ...
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0answers
16 views

Step by Step to Connect to ElectrumX via Nodejs

I am developing a simple app that will need to retrieve BTC wallet Address Balance and relative transactions Initially I thought to use some existing APIs (btc.com, blockchain.com etc.), but the ...
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2answers
97 views

How to reduce Bitcoin loaded wallet memory?

The server has 2GB of RAM memory. It takes up a lot of memory when I create or load a wallet. When I create about 50 wallets, the server is very slow because the memory is full. Is there a way to ...
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1answer
53 views

How to use bitcoin from the command line in Windows?

Do there exist any stable and audited bitcoin wallets that can be used from the cli on Windows? I have looked but have been unable to find any that I can use for automated tasks.
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2answers
392 views

Access Bitcoin Wallet with private key

3 years ago i bought a little bit of Bitcoin. Today i found the private key of my wallet. But I cant access it, I need these 12 words (backup) I dont have. Why cant I access my Bitcoin Wallet with ...
2
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2answers
925 views

Balance zero after recovering wallet from seed-phrase

I recently got help my some experts on how i can recover my wallet using my private key, so i went ahead and downloaded brd wallet and block chain, then proceeded to recover wallet in the first and ...
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1answer
57 views

Loading private key (missing bitcoin)

I exported the private key from a 0.7.2 because I could not how to upgrade the wallet. I then imported it into 0.18.0 I was expecting to see a balance and the transactions and nothing was found. I ...
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1answer
23 views

Ledger 8 pin number how hard in terms of entropy is it to guess?

ledger has a max. 8 number pin for unlocking it as far I know. I am very interested, can someone say if (given any method/resources) it is in any scenario (except luck) possible to guess this 8 ...
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0answers
21 views

I can not install a new MAC OS wallet bitcoin-qt

I launch the wallet, the block index starts loading, then blocks are rewound, then 1% and after the wallet crashes, what should I do ?
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0answers
44 views

Question about public addresses

2009 btc private key but no address. I was given btc in 2009 and also mined for a few weeks too. My dad still had every hard drive he has ever used. So i have found a couple of files that have ...
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1answer
39 views

How do I find the wallet that Bitcoin was sent to?

How do I find the wallet that Bitcoin was sent to? I was new to Bitcoin and created at wallets in at least 2 places (Armory and Coinbase) but all are showing zero.
3
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1answer
45 views

Are bitcoins “stored” on phones? Or we only see data on the blockchain?

I'm confused. BTC or other crypto currencies are not stored on phones/computers right? On Wallets we ONLY see the amount of BTC or currency that belongs to us, but there is nothing being "stored” ...
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1answer
30 views

Cryptocurrency wallet passphrase 10 word?

I have a pass phrase with 10 words but can't remember what wallet I used, an every one I have tried is 12. Does anyone know ?
2
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3answers
155 views

Are all three Bitcoin address types interoperable (legacy, segwit, native segwit)?

is it possible to send transactions back and forth between all 3 address types (legacy, segwit, native segwit-bech32)? Or is one of them not able to send to another?
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3answers
853 views

Can I send bitcoin from paper wallet directly to hardware wallet?

Can I send bitcoin from my paper wallet to my hardware Ledger wallet without using blockchain wallet?
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2answers
4k views

I forgot where i created my bitcoin wallet

I have a wallet that contains bitcoin, but I forgot on the site where I made the wallet. anybody know how to find which website location that create my wallet ? do i need to write the wallet address ...
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1answer
59 views

Where can I download bitcoin core version 0.16.0

I changed my passphrase around march 2018 and now I can't use my new passphrase on the new bitcoin core version. When I put the back up wallet.dat into the new versions of bitcoin core, it tells ...
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2answers
133 views

how to set the transactions fee using the RPC call?

I am creating the web wallet for the bitcoin , I want to allow web wallet users to set the transactions fee . Is their is any rpc call available for setting the transactions fee (for setting ...
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1answer
51 views

Old Bit Coin Wallet Failing to Pass 180 Weeks

I have an old laptop that I have bitcoin wallet on. I left the computer alone since early 2015 and when I try to sync the bitcoin wallet, the wallet gets stuck on 180 weeks. the bitcoin wallet sync ...
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1answer
74 views

Unspendable bitcoins on blockchain [closed]

Gooday, please i want to know how to transform my non spendable bitcoins to spendable bitcoins on blockchain account for the sake of being able to spend them please someone help me out I'm lost. I ...
0
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3answers
140 views

How to restore my Bitcoin Core wallet from seed phrase

I have my Bitcoin Core wallet protected with passphrase for a long time ago. Now I'm trying to move out the coin from there but unfortunately I forgot the passphrase. When finding for recovery info I ...
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1answer
36 views

What happens to bitcoins that are in a ponzi scheme wallet? [closed]

I bought bitcoins that are stored in Cloud Token wallet. I found out later on that this crypto currency was part of a Ponzi scheme (shame on me). Currently I've had difficulty withdrawing my coins, ...
0
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1answer
82 views

How to get the private keys out of old wallet.dat without syncing blockchain

I have old wallet.dat files of Bitcoin, Litecoin, Bitcoin Cash, Omnicore. My Bitcoin Cash wallet.dat has unbroadcasted transactions inside, so I am afraid that others might also have unbroadcasted ...
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2answers
75 views

Wallet forensic

Someone who scammed me used this wallet to receive the BTC 12fmomENb5SSxR54Bitua71CZrc4oVQtmB he hasn't moved them from there since July 31st I'm trying to figure it if that wallet belong to any ...
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1answer
29 views

Transfer of BTC the wallet address p2pkh to wallet address p2sh

Is it possible to send BTC from wallet having address type p2pkh to the receiver wallet address p2psh
0
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1answer
237 views

What's the magic key version bytes for BIP49

I'm implementing BIP49-compatible key derivation for bitcoin-s, but I'm having a hard time finding the magic version bytes to use for the extended keys. I've been looking at BIP49, but can't find ...
2
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0answers
79 views

Is it possible to use Bitcoin-core for multisig? Can it handle change addresses?

I have tried to import three xpub in a watch-only wallet as keypool with importmulti and a multisig output descriptor and to fill the first address with some BTCs. When I try to spend the newly ...
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1answer
61 views

Can't link my Paper Wallet to Blockchain

So I've created a Paper wallet using bit address.org, and have joined Blockchain.com, but can't find out how to link the two? Also the strategy I'm using at the moment-till maybe "you" say otherwise, ...
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1answer
142 views

Paper wallet safety

I'm using the mobile "trust wallet" app, and my plan is (was?) to write down the mnemonic key and keep it in a safe place, then delete the app. Then whenever I need to receive or send money to a ...
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1answer
57 views

My Bitcoin client has stopped syncing

As you can see my client is stuck on 99,7% with unknown. Syncing Headers(577895), It has been in this state since last day synced(which you can see). How can I get it to work since I have plenty of ...
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2answers
380 views

Did I lost my balance by using an old wallet.dat?

I saved a copy of my wallet.dat as a backup, i used it to transfer 1 btc to another address, now it's got 1 btc less in the total. now I deleted the wallet.dat and open the wallet with the saved ...

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