Questions tagged [bitcoin-core]
A full node implementation of the Bitcoin protocol with a GUI and a wallet. Bitcoin Core is a MIT-licensed Qt 5 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client".
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Is it possible to get already-sent bitcoins from a corrupted wallet?
I bought some bitcoins on LocalBitcoins then downloaded Bitcoin-qt then instantly sent it to my wallet and now the wallet is corrupted... Is there a way to get them back?
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How do I run GUI on Raspbian?
I had this running perfectly and the blockchain was synching and at about 80% completion. I came home from work to a power outage.
I keep seeing to run bitcoin-qt, it doesn't appear that I have that. ...
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Monitor non-wallet bitcoin addresses for new transactions
This is usual checkout functionality. Show address to the user and needs to monitor it for new transaction during n minutes. Addresses are not unique for each payment.
Optional:it would be good to ...
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Move bitcoin data from Windows to Mac
Is it possible to move the Blockchain data from Windows to Mac? The wallet on windows is synced, the one on mac is not. The wallet on Mac has had some bitcoins sent to one of its addresses. Would it ...
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Parse the output field of getrawtransaction to generate a common address hash
Consider the following coinbase transaction:
https://www.blockchain.com/btc/tx/d70ae1131d433b655d0faeae1db4efa15bb4138f1e38e60a53073a58ea1dcc34
How we can retrieve the recipient address, i.e. ...
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Parsing P2SH address from output script
I have already looked at link.
I am trying to generate P2SH address from output script but no luck. I am using transaction 40eee3ae1760e3a8532263678cdf64569e6ad06abc133af64f735e52562bccc8 for testing ...
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How do I relocate my bitcoin data in bitcoin-qt to save space?
I am a rather new Bitcoin user, running bitcoin-qt on Linux. However, due to limited disk space, the application is taking up too much of my drive. I'm guessing this is due to the ever-expanding ...
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A few of my addresses that have funds show empty through my node
I have recently connected sparrow wallet to my own node to get away from using a private electrum server.
But some of the addresses I have bitcoin in are not being recognized. I know they have funds ...
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How to import an extended public key into bitcoin core 0.16
I exported an xpub key from a HW wallet and want to import it into my own node to keep track of changes to the balance. My node is running satoshi 0.16.1
Can someone help me find the right syntax for ...
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How miners validate each transaction?
There is a locking to each transaction? and sender also attach his digital signature to that transaction?
When this transaction comes to miners then how they validate this transaction is valid.
...
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Data about number of block mined + stale blocks per day in Bitcoin?
I am wondering if there is any easy way to get number of mined blocks per day + number of stale blocks per day for the last three month e.g.,?
I could not find such data on Blockchain.info
In ...
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How to add support for segwit address and legacy with bitcoin core 0.16?
I've been running bitcoin core 0.15 as regtest, and had X bitcoin in my balance all are from legacy output addresses, As I upgraded to 0.16 core version check in debug the legacy addresses are still ...
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need advice for Python interaction with bitcoin-core wallet
I've read about a few Python libraries that performs JSON-RPC calls to bitcoind. However, not many are actively developed/maintained, nor are they widely used in production environment. Since bitcoind ...
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Starting bitcoind for the express purpose of creating a wallet?
Referencing this solution:
My favorite method:
grab out a old/unused pc/mac
install a linux over usb (maybe Talis) (make sure your USB stick is clean!)
download a recent version of bitcoin-core (...
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How To Transfer Coins From Bitcoin Core to Electrum to avoid Sync Process?
I am super new to bitcoin and to be honest am not sure what I'm doing. I needed to buy something via bitcoin, and its recommendation was to download Bitcoin Core Wallet, so I did that and bought ...
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Blocks seem to store only txIDs, where does the transaction data come from for IBD?
I know that blocks store transactions. After looking into a block, I can see that it only stores txIDs.
Question 1 - Where are actual transaction objects stored?
If you tell me that it's stored in a ...
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What role has bitcoin-init as a process?
I have set up a node on a RaspberryPi. When I check for active processes with top I see bitcoin-init occupying 50% of memory and 7% of CPU.
I can check for bitcoind and it is active:
bitcoin@...
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Deduct transaction fee always from 1 receiver address if sending some BTC amount to 2 different receiver addresses in single transaction
Need help!! anyone there..
How to Deduct transaction fee always from 1 receiver address if sending some BTC amount to 2 different receiver addresses in single transaction
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Configure esplora to point to the bitcoind servers ip address - Part 2
Continuing on from this post: Configure esplora to point to the bitcoind servers ip address
Trying to run cargo run --release --bin electrs -- -vvv --daemon-dir ~/.bitcoin, but it kept saying that ...
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Bitcoin privacy - current state of privacy BIPs - is mimblewimble broken?
Community,
what is the current state of privacy related BIPs? Anything on the roadmap by core devs to be deployed on main chain within the next year? IF yes, could you link me to this BIP(s)?
And ...
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How does this simple script use the OP_CHECKSIG opcode?
I have this Script P2PKH
<A Signature> <A Public Key>
OP_DUP OP_HASH160 <A Public Key Hash> OP_EQUALVERIFY OP_CHECKSIG
The bitcoin.org documentation say this
The entire ...
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How did lose my bitcoin?
I met this guy online and he wanted to teach me trading. so he said I needed to log in my wallet in my wallet which I did then he sent a link of team viewer (https://www.teamviewer.com/en/download/...
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python-bitcoinrpc: modulenotfounderror no module named 'bitcoinrpc'
I'm running bitcoind/ bitcoind -regtest on Windows 10 and am already able to use bitcoin-cli -regtest along with json-rpc methods to perform basic operations and get balances etc. When I try to do ...
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Lightning - Question about force-closures of channels and its impact on recovering funds
Dear Lightning experts,
someone mentioned in context with lightning channels the following things, and I would like to ask you if this statements are true, and if yes, is this a problem in a future ...
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Bitcoins didn't arrived
3-4 days ago, I transferred bitcoins from Virwox to my Electrum wallet, but this bitcoins didn't arrived, what can i do?
1JPSVx7hjcu7rR2Vr6nyz7z8mok3yryGZ
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Batching transactions to safe on fees
I have some bitcoin spread across multiple addresses. I would like to move these to different addresses.
I've heard about batching and was wondering if it is possible to batch the transaction to ...
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How to import address with private key using importmulti
Problem. importmulti function has a lot of parameters and they are more difficult to understanding then the parameters of another Bitcoin RPC-API functions. Those who are not profi in modern ...
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How do you import an xprv using descriptors and importmulti?
I have figured out how to import an xpub, but when i use getdescriptorinfo on an xprv:
getdescriptorinfo "wpkh(...
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What is the best way to create a wallet with a blank keypool then add keys to it?
The scenario is this:
User has a cold storage wallet and will import their cold storage xpub into Bitcoin Core using getdescriptorinfo and importmulti. User wants to only use the keys associated with ...
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Bitcoin transactions validation process
I have a general understanding of building blocks. But am hoping someone can fill in the details/gaps. Also, can you correct if something is not right? Thanks.
Scenario:
Bitcoin transactions are ...
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How to manage externally created addresses?
In my application the private keys are created and stored on a HSM. When a new private key is created on the HSM, it returns the corresponding public key. With this public key I create a bitcoin ...
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What needs to be written down for a paper wallet?
I'm installing bitcoin-core with snap on Ubuntu for a dry-run at generating a paper wallet.
Perhaps naively, I thought to "write down" something like:
nicholas@mordor:~/bitcoin$
nicholas@...
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I can not find a clear mathematical proof method with details and example for "near to zero chance of generating the same pair key wallet"
A mathematical proof method with details for "near to zero chance of generating the same pair key wallet"
I can not find a clear mathematical proof for the top sentence with example
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What happens if everyone disconnected from the blockchain
What would happen if for some reason, every computer connected to the blockchain was disconnected, and no peer-to-peer connection was established with the blockchain protocol between 2 users.
Would ...
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rewriting past transactions in Bitcoin [duplicate]
Is it possible to rewrite past transactions in Bitcoin?
For example, lets say, we have a super computer with any desirable speed, that would be able to calculate hash as fast as we want. Would it be ...
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At which point and how does the miner who successfully solved hash get coins? [duplicate]
When miner creates a valid block he broadcasts that to the network.
It can happen that someone else did the same. So we have half nodes think that chain+A is correct, and other half that it is chain+...
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Are minimal bitcoin fees nowadays enforced in bitcoin-core?
I read some resources like http://bitcoinfees.com/ and Are Bitcoin fees optional?, and I still don't get this:
Does bitcoin-core nowadays enforce (regulates) minimal bitcoin fee or is it completely ...
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If Lightning Network takes transactions off Blockchain, would that defeat the whole purpose of having a Blockchain ledger?
Currently Bitcoin transactions can take around 45 minutes. If everyone in the world uses Bitcoin, computers would have to consume 1000 of terabytes per Hour.
The solution is the Lightning network, ...
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Help about BitlyCore
Please I need help. I want to know if anyone knows about BitlyCore.com I have been running the full block for days now and it's just stuck at 87% please I need help.
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Bitly core website not loading [duplicate]
I misplaced my previous laptop, and I got a new one, I downloaded my wallet from Bitly core using my 18 word passphrase, I have been loading the nodes and it got stuck on 87%, I tried visiting the ...
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How will upgrades to Bitcoin such as Taproot help allow increase of block sizes?
Bitcoin's block size, hardcoded at 1MB, has been limited by the capabilities of its weakest full nodes. The block size limits the number of transactions on the blockchain outside of Layer 2 solutions, ...
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Adding new files to Makefile.am
I need some help with adding files to the code base by adding them to the autotools build system. Other posts that try to answer the same question haven't helped me. I am experimenting with Bitcoin's ...
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How basecoin transaction is added to a block?
I'm new to blockchain and bitcoin. In my understanding, miners are trying to find a nonce that is added to a block, and then the hash of the block will have some zeros at first and the first ...
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Forgot password
I got myself a wallet back in 2015. I put bitcoins in there and forgot about them. Of course, because of the course, I remembered about this wallet, but I forgot the password. I have a wallet backup, ...
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Why do so many Bitcoin wallets and accounts exist?
Why so many bitcoin wallets do exist? Why it is not just single like other conventional currency? Multiple wallets means I have to have multipe accounts; is it possible to transact among multipe ...
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How does the bitcoin exactly prevent Double spending attacks?
I recently started reading about Bitcoin, the idea seems hard to get, and I'm trying to understand the basics now.
I read the white paper by Satoshi Nakamoto but I still have some confusions
First, ...
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Installing bitcoin and bitcoincash on same server
I have installed bitcoin core by using its source code in my amazon server by using the instructions given in the below youtube link
https://www.youtube.com/watch?v=tG_24G7bj_w
Some portion of the ...
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Storing your private key on a "security server"?
One of the suggested security precautions when storing Bitcoin of users on a server is to store the private keys on a separate server:
The database storing the private keys or the seeds in case of ...
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Private key security level
Any of a kind Bitcoin wallet need to share private key on the internet-connected machine.
Bitcoin client has no responsibility for to keep private key secure. If your's machine connected to the ...
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Keeping Track of User Deposits with Bitcoin
I found the following statements about Bitcoin on the Ethereum SE:
When using Bitcoin one can generate new address per user of service
and save pair (address -> userId), so it is always obvious ...
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