Questions tagged [bitcoin-core]

This tag should be used for questions pertaining to Bitcoin Core. Bitcoin Core is an MIT-licensed Qt 5 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client". This tag should be used when referring to the Bitcoin Core software.

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138 views

Test vectors for bitcoin core (blocks and transactions) needed

I am looking for test vectors to test edge cases of an implementation. For instance: "Unusual" blocks that made it to the blockchain Non standard transactions that made it to the blockchain Anything ...
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1answer
2k views

Tax implications of withdraw fee from one exchange (Binance) to another GDAX/Coinbase

I transferred 0.2 ETH and 0.3 ETH in separate transfers from GDAX to Binance (GDAX does not charge a fee for this). Then, I transferred back from Binance to GDAX all 0.5 ETH, but since Binance ...
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39 views

Old core wallet giving error at startup

I have a core wallet from 2011. a version 0.4.0 beta with almost 1 BTC. When I start up bitcoin.exe I can see content and all my adresses, but it constantly pops up with an error saying: EXCEPTION: ...
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609 views

error while loading shared libraries: libboost_system.so.1.63.0: cannot open shared object file: No such file or directory

I am trying to use bitcoin core in airgapped cold storage with tails installed on a usb. first i downloaded the 0.15.1 release bin files into tails storage. i could run the bitcoin-qt just fine. .......
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1answer
832 views

Trying to open an old bitcoin core wallet.dat file fails

I am trying to open an old (~2012) bitcoin core wallet.dat with a bitcoin.com wallet, and it says that my password is incorrect, although it works great on my bitcoin core wallet. Was there any ...
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276 views

Importing a paper wallet into Coinomi

What exactly is happening when you take a picture of the QR code from a bitcoin paper wallet with the Coinomi app? Are you executing a transfer of bitcoin from the paper wallet to the Coinomi wallet ...
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154 views

Blockchain syncing seems to be stuck bitcoin core wallet

I installed bitcoin core wallet and it work for a month, now syncing seems to be stuck on calculating progress increase per hour and nothing happens. how do I know if the syncing is progressing?
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27 views

Is it possible to set different fee for each account in bitcoin core

I have following accounts in bitcoin core: ajit@AjitSoman:~/git$ bitcoin-cli listaccounts { "": -0.83002768, "1": 1.10000000, "1470": 0.56739259, "1521": 0.63600000, } ajit@AjitSoman:~/git$ ...
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114 views

Bitcoin Core on SD card

Running out of hard drive space, I bought a 256 GB SD card formatted with the FAT filesystem and moved my Bitcoin directory to it. After getting error messages I decided to delete it and redownload (...
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91 views

Transfer incoming funds from Bitcoin Core to another wallet before blockchain sync is completed

This is my situation: I have a Bitcoin-QT wallet on my Mac (Qt version 4.7.4.- yes I know its very old). only recently I've been working out how to operate and exchange bitcoins. well to cut a long ...
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1k views

I sent litecoin to my bitcoin address, on my nano ledger

So I am very new to cryptocurrencies and have already made my first mistake. I used shapeshift.io to transfer bitcoin to litecoin, and entered a bitcoin address as the recipient to receive the ...
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415 views

can i find my wallet address without opening bitcoin core qt

I havent ran bitcoin core qt for 4 years. And now the program wont run, just says bitcoin qt quit unexpectedly. A: How can i check my bitcoin address and balance B: How can i get the program working ...
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47 views

Do we know which companies donated to Bitcoin Core development?

Similar to a previous question (How do the people who work on Bitcoin Core get paid?) which I felt does not adequately answer my interest. Do we know specifically which developers are drawing a ...
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552 views

Bitcoin QT - why do I have an undefined reference to `qInitResources_bitcoin() error

I have built the Bitcoin source code, created my own genesis block and everything was working great! Now that I have changed the word bitcoin to GELF in some places of the program to suit my own ...
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497 views

Metcalfe's law for bitcoin price

Here's an inline link to article article the square function number of users times the average transaction value. 94% of the bitcoin moved over the past four years is explained by that equation. It ...
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101 views

How do i transfer Bitcoins from Bitcoin Core to BitGo?

How do i send my BitCoins from Bitcoin Core to BitGo?
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166 views

Share blockchain data between bitcoin-core and btc-1

I am currently running a BTC-1 node and would like to setup an additional core node before the November fork. Ideally, I would avoid the need to resync the entire blockchain again. Is it possible for ...
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699 views

bitcoind transaction fee calculation

I'm using bitcoind and for the transfer of tokens from one account to other, I'm using sendFrom method. but there is a transaction fee calculation and on the bitcoin-qt panel, In the transactions ...
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70 views

Bitcoin core closes inbound connections every 10 minutes

I noticed that Bitcoin core will close incoming connections every 10 minutes. Wireshark captures [FIN, ACK] are received from the node. It looks like Bitcoin core is monitoring the connection time. ...
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576 views

bitcoin.conf file on mac

I have installed bitcoin core on mac and accessed the config file from the preferences tab on the bitcoin-qt. Now, I have started testnet on it by the below settings. testnet=1 server=1 rpcuser=...
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360 views

I have bitcoin in an armory wallet - how do I get the Bitcoin Cash

I have an amount on bitcoin in an armory wallet from a year ago, and have never moved the coins. How do I get the bitcoin cash coins from this? Can I just install the bitcoin cash client and ...
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880 views

Is there a guide to uninstall bitcoin core ? Installation mess

Hi i'm wanting to do a full uninstall of bitcoin core and to follow a book that i've recently bought on programming on the bitcoin blockchain. I've tried removing all the data and running: sudo ...
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165 views

What is the purpose of Bitcoin timestamps

Why do we even need timestamps on the blocks? Has it something to do with the consensus?
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229 views

how to import my wallet from blockchain.info into bitcoin-qt?

I have read the related discussions about how to import a wallet and though they are close, the answers does not help with this problem so I'm asking it here and now. I have my bitcoin public ...
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255 views

(RBF) double spend transaction not showing up in searches

On my first ever attempt to send my mined bitcoins from my wallet to a bitcoin exchange site I underestimated the transaction fee that would be required to get the transaction processed. So, following ...
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1answer
327 views

Mycelium Backup Restore

Is there a way I can restore my mycelium Bitcoin wallet if I have forgotten the 12-word list? I have searched everywhere and no one describes a situation like this.
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57 views

Bitcoin core download error

I keep getting error message when trying to download bitcoin core newest version.I keep getting " error opening file for writing ". What am I doing wrong ?
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88 views

compling Mac version in Linux

I tried to build windows version successfully using cross-compilation. is it possible for osx too? I mean compiling osx version in linux?
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2k views

Old (2010) Wallet - Can't figure out best and safest way to extract

The following is based on my very limited understanding of the software involved in Bitcoin (I have a reasonable understanding of the structure of Bitcoin itself at a high level). I read an article ...
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260 views

how the FruitChains consensus works in bitcoin

I came across the paper FruitChains: A Fair Blockchain. The basic nakamoto blockchain algorithm seems to be slightly twisted with using fruits instead of directly inserting transaction in to the ...
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274 views

CiPHREX mSIGNA wallet recovery from private key to new wallet

I use mSIGNA for my bitcoin transactions. This is a multi-sig P2SH wallet that requires private keys and an account file to create/view/receive transactions. I've searched through the documentation ...
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219 views

Bitcoin core or bitcoind as server on the network?

does anyone know if it is possible to use a specific bitcoin kernel installation on a network as a server for the internal network so you do not have to install multiple complete bitcoin core copies ...
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501 views

Blockchain download stuck on Bitcoin core wallet

The caching up process was progressing (slowly but still progressing) until it got stuck after processing 436820 blocks: http://i.imgur.com/4nbP3ML.png 3 days after, I'm still at 70.76% Says I'm ...
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55 views

Is bitcoin a better option than banks for transferring money from India to Hong Kong

I live in HK and I need to transfer some amount from my Indian bank account to my wife's Hong Kong bank account. I tried bank wire transfer and I lost almost 11-12% of total amount. My friend also ...
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281 views

How to setup, sync, backup en restore blockchain when using bitcoin-qt

I am trying to setup a Bitcoin client using Bitcoin Core and Armory. Synchronization with the network seems troublesome. The blockchain is +120GB and corruptions can easily occur. I have tried twice ...
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235 views

Will minrelayfee change the value depend on the mempool size?

I got the following error when I executed sendrawtransaction. But it worked normally when I tried it on another bitcoin node. 66: mempool min fee not met Someone says that minrelayfee will change ...
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154 views

Will -addnode option help keeping same condition of mempool between my bitcoind servers?

I have multiple bitcoind servers and they are load balancing. Using IP sticky feature of the load balancer, client app connects to same bitcoind server. However, the stickness is not perfect. I'm ...
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2k views

How to dump all private key from wallet.dat (walletversion > 130000)?

I tried to use pywallet and it can't dump all of the wallet's private keys. When I send 10 transactions & decode raw transactions, I will get 10 new addresses, but I can't dump all of the private ...
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76 views

Unconfirmed outbound transaction with change messing wallet balance

I noticed a strange behavior with my wallet. I sent a few coins and that generated a change (let's call this change amount X). This transaction is still unconfirmed. Immediately after starting the ...
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46 views

two functions Bitcoin has which are absent from Litecoin: `MakeTransactionRef()` and `std::move()`

From the file chainparams.cpp... Litecoin: genesis.vtx.push_back(txNew); Bitcoin: genesis.vtx.push_back(MakeTransactionRef(std::move(txNew))); What is this function MakeTransactionRef()? What is ...
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145 views

Orphaned blocks

Is there orphaned blocks in blockchain? I mean a database of full node. Is it true that orphaned blocks (that outside the mainchain) already are in blk00*.dat files?
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52 views

MultiBitHD gap limit multiple devices

A technical question on MBHD gap limit. Afaic the gap limit (GL) is to warn a user to not create a too large gap between the last actively used address and newly (unused) addresses. Now, suppose I'm ...
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2answers
1k views

Step by Step instructions on installing Bitcoin Core 0.14 on Raspberry Pi Zero and 1/2/3?

I couldn't find a concise tutorial on how to setup Bitcoin Core v0.14 on Raspberry Pi Zero or 1/2/3. Let's say I have a brand new raspberry pi without any image flashed. What are the step by step ...
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69 views

Bitcoin Full Node Stalled - 13.2

A full node that I've had running for months just began to stall on a certain block. It seems to be refusing to update blocks beyond a certain timeframe. There are no processes spinning, network ...
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405 views

Bitcoins disappeared on import into Electrum

A few years ago I received some bitcoin in Bitcoin Core (~0.4 BTC). Then I transferred some to Kraken (~0.1 BTC) and a few weeks later transferred some back (~0.1 BTC). Then I backed up wallet.dat and ...
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40 views

Wallet issues with bitcoin

i am new to this bitcoin universe and signed up on a website called genesis mining, a form of cloud mining. it asked for my bitcoin wallet address but can't find it no where in the bitcoin wallet app ...
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323 views

how to change address back to old address

i set up bitcoin core wallet and had an address. I had someone pay me into this wallet. unfortunately, my mobile crashed and when I re-installed - i got a new address and lost my bitcoins on the old ...
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1k views

How to uninstall Bitcoin Core?

I would like to know if you could help me, I downloaded the wallet of BITCOIN CORE and it occupied 25GB and filled my SSD i did not know that it takes more than 60GB, can you help me to uninstall the ...
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2k views

socket recv error Connection reset by peer (54) failed after select(): Connection refused (61)

No block source available I have: nmap -Pn 84.236.43.229 For each of the addresses in question none of them have had port 8333 open, I have also tried testing from outside my current network, and ...
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245 views

Bitcoin Core QT Fatal Error after moving block folder, can't retrieve Private Key

I have tried installing Bitcoin Core on my PC and without thinking, I went on and bought some coins (I was trying to be organized, so by the time the sync was done I would already have the coin). 90% ...

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