Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

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.

454 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
1
vote
3answers
73 views

Storage exceeded in middle of synch

A friend gave me a few bitcoins a number of years ago. Yesterday, I read an article about bitcoin and it reminded me I had some. I went online to check the value and to possibly spend them. I tried to ...
1
vote
0answers
162 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?
1
vote
0answers
223 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 ...
1
vote
0answers
249 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 ...
1
vote
1answer
267 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.
1
vote
0answers
56 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 ?
1
vote
0answers
86 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?
1
vote
0answers
1k 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 ...
1
vote
0answers
249 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 ...
1
vote
0answers
266 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 ...
1
vote
0answers
218 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 ...
1
vote
0answers
484 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 ...
1
vote
0answers
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 ...
1
vote
0answers
270 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 ...
1
vote
0answers
203 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 ...
1
vote
0answers
149 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 ...
1
vote
0answers
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 ...
1
vote
0answers
72 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 ...
1
vote
0answers
43 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 ...
1
vote
0answers
140 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?
1
vote
0answers
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 ...
1
vote
2answers
912 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 ...
1
vote
0answers
63 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 ...
1
vote
0answers
400 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 ...
1
vote
0answers
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 ...
1
vote
0answers
319 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 ...
1
vote
0answers
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 ...
1
vote
0answers
1k 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 ...
1
vote
0answers
235 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% ...
1
vote
0answers
40 views

Bitcoin transactions.

So recently, I had some bitcoins transferred to my desktop wallet account. The transfer happened yesterday. The way I did it, was that I created an address as you all know, without label or specific ...
1
vote
0answers
95 views

bitcoin-qt (master branch) shutdown delay on debian stretch

Following a bitcoin core issue on debian stretch which was resolved on the master branch, I am now running a pre-release test build. Each time I exit bitcoin-qt, I have to wait about 5 minutes until ...
1
vote
0answers
2k views

v0.13.1 wallet - connect failed: Network is unreachable (101)

Noob here. Ran the core wallet on my Linux PC and looking for help as to why it is not working after syncing up the history of blockchain Tx's. Is this likely my router not passing port 8333 packets,...
1
vote
0answers
269 views

Bitcoin-qt requesting reindex on already indexed blockchain data directory

To save time, I synced the blockchain on my laptop for import to my Raspberry Pi node. I had set txindex=1. When setting txindex=1 on my Raspberry Pi and pointing the data directory to my previously ...
1
vote
0answers
514 views

Failing to build bitcoin-core v0.13.1

I have done quite a few upgrades in the past and this has never happened before: $ uname -a Linux back 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux $ git checkout v0....
1
vote
0answers
364 views

Why doesn't bitcoind verify blocks like bitcoin qt?

I have downloaded the full bitcoin blockchain using bitcoin-qt. When I run bitcoin-qt, it verifies the blocks for about a minute, then it runs without any issues. The issue is when I try to run ...
1
vote
0answers
78 views

C++ Proofofworklimit to bitcoinj util.DecodeCompactBits

What is equivalent bitcoinj util.DecodeCompactBits for below c++. Cbignum(~uint256(0) >>32) Cbignum(~uint256(0) >>20) Cbignum(~uint256(0) >>23) Cbignum(~uint256(0) >>22)
1
vote
1answer
327 views

Need help to understand where bitcoin transaction has gone

I am new with bitcoin and I need some help from experienced members. I have a server with bitcoin core where we accept some payments and use bitcoin core as mercant. The problem is that we have got ...
1
vote
0answers
46 views

C Compilation Error Following README

I'm having an issue getting the local bitcoin client running on a Mac OS X machine. When installing berkeley-db4, and running the following command (per the README): brew install https://raw.github....
1
vote
0answers
89 views

What is the correct code flow while sending a message

I have a fundamental doubt wrt boost signaling used in bitcoin. As far as I understand the following happens between main.cpp and init.cpp: StartNode() spawns a thread ThreadMessageHandler ...
1
vote
0answers
50 views

Help with understanding Semaphore grants in OpenNetworkConnection

I am new to concurrent programming. Can any expert throw some light on the semaphore grant that one requires before acquiring a network connection ? bool OpenNetworkConnection(const CAddress& ...
1
vote
0answers
183 views

Can't handshake with my node

I have a 0.11 nodes, all was fine until now, no restart is doing anything. My client sends a Version Handshake but the ACK never comes. In RPC getpeerinfo take 1 or 2 minutes to process even if there ...
1
vote
0answers
57 views

Where does the current Bitcoin Core currently fail static analysis, if at all?

I am looking into static analysis, and I'd like to know what to expect in the case of Bitcoin's main implementation, Bitcoin-Core. That way, if I try static analysis on Bitcoin, I will know whether ...
1
vote
0answers
679 views

OS Windows Reinstalled, Bitcoin Core bitcoins lost, how do I recover them?

I've lost my bitcoins when I reinstalled OS on my computer. I still have my receiving address and the password I used to encrypt my Bitcoin Core Wallet. How do I recover the lost bitcoins? Does ...
1
vote
0answers
176 views

bitcoin-qt restored wallet.dat all synced closes after correct passphrase “assertion error crypt” HELP

Installed bitcoin-qt and replaced new wallet.dat with old wallet.dat backup Opened bitcoin-qt and let it sync and all blocks synced and wallet has correct funds and past transactions. I Want to ...
1
vote
0answers
73 views

Bitcoind writes complete wallet.dat regularly which is a problem, what can i do?

i have troubles with my system, using iotop i identified bitcoind as the source of problems. I am running bitcoind of bitcoin-0.10.0-linux32 and am using the RPC calls of bitcoind. My wallet file is ...
1
vote
0answers
293 views

how do I send my imported wallet on electrum

I have been able to transfer my bitcoin to electrum but am facing hard time to pay it or send my coins. A form appear and I fill out and there is only two option to choose to click create unsigned ...
1
vote
0answers
612 views

Mempool tracking

I'm trying to clear up some uncertainties around the mempool A tx comes in, its validated, and no other transactions have currently marked any of its inputs. Tx gets added to mempool. If a double ...
1
vote
0answers
575 views

Error While making windows.exe using gitian build?

Actually I'm making a logos windows exe (logosd and logos-qt) following the release process, which is mention on below path on any coin you can find that path, I'm working logos LGS Coin that's why I'...
1
vote
0answers
69 views

listsinceblock returning block on fork

Im considering using listinceblock to monitor incoming bitcoins to my app. What happens if the block returned by listsinceblock ends up being on a dead-end fork?
1
vote
0answers
232 views

How I make a portable version of Bitcoin for Ubuntu?

I want to create a bitcoin wallet executable file in Ubuntu with all its dependencies. So when use that file from some other system it will work perfectly. How I make a portable version of Bitcoin ...