10 votes
Accepted

How to run Bitcoin Core behind corporate proxy?

Bitcoin doesn't use HTTP for its communications - it has its own specific protocol that runs directly on top of TCP. So an HTTP proxy like squid won't help. If you aren't able to make outgoing TCP ...
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9 votes

After downloading the entire Bitcoiin blockchain from a torrent, what are my next steps to link it to Bitcoin Core 0.17.1?

You should not use a torrent to download the blockchain. There is no general purpose to using a torrent, as using it makes synchronization slower because validation (which is the slow part) cannot ...
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  • 7,499
8 votes
Accepted

How to compile Bitcoin-Qt as an .exe on Ubuntu?

.exe files are for windows only. Linux systems do not use the same file extension or file type as windows. I assume you just want to create a Linux binary that can be used on all systems without ...
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  • 62.2k
7 votes

My Bitcoin Qt is behind 7 years and 32 weeks

If you shut down your PC and then restart, the Bitcoin sync will pick up where it left off. The latest transaction your Bitcoin currently knows about is 7 years old, but it won't take 7 years to ...
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  • 3,421
6 votes
Accepted

Running another instance of bitcoin-qt dedicated to testnet/regtest?

Depending on your OS you can start a 2nd bitcoin-qt acting on a non-mainnet with ./bitcoin-qt -testnet or ./bitcoin-qt -regtest (from a shell). You can also define a custom datadir and place a bitcoin....
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5 votes

Is there any way to contact the makers of bitcoin qt and bitcoin core?

It's open source software by many independently cooperating developers. The name is now Bitcoin Core, where bitcoin-qt is the GUI application. Discussions happen on many forums and media, so it ...
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  • 6,208
4 votes
Accepted

How to save the bitcoin core (bitcoin-qt) database for later?

Ok, I think I got it. Here is a short guide based on this bitcoin wiki article. Notes: This does not concern backing up your keys. If you lost your wallet, or your keys, and you made the backup ...
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  • 171
4 votes

How to compile Bitcoin-Qt as an .exe on Ubuntu?

Since this is the first result that pops up on google when searching "bitcoin windows depends build" and the user asked how to build the .exe (but was actually looking for static build instructions on ...
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4 votes
Accepted

Bitcoin V0.1 Not Connected

You cannot. There have been both changes to the P2P protocol that prevent this, and changes to the way that nodes are discovered. The method which 0.1.0 discovered new nodes was by joining the #...
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  • 62.2k
4 votes

Is there a faster way to download IBD for bitcoin core?

If you could download an already synchronized state, you shouldn’t do that. The purpose of synchronization is to produce a valid database containing the state of the network, downloading somebody else’...
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  • 15.1k
3 votes
Accepted

How do I relocate my bitcoin data in bitcoin-qt to save space?

I recommend reading about the Bitcoin Data Directory. You should also take a look at this answer: How do I specify in which directory Bitcoin blocks and other data should be stored? Basically, all ...
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  • 8,734
3 votes

Is there any way to contact the makers of bitcoin qt and bitcoin core?

If your contact request is of a technical nature, you can also use the github issue tracker and create a ticket. Keep in mind the guidelines of reporting issues, interesting part quoted: Firstly ...
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  • 1,376
3 votes
Accepted

Where does bitcoin-qt store it's initial settings

Bitcoin-Qt stores its own modifiable settings outside of bitcoin.conf (which is intended to only be read). The location and format of that file is platform dependent, but on Linux it is ~/.config/...
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3 votes

Where is blockchain located on Mac for Bitcoin-Qt?

Quoting https://en.bitcoin.it/wiki/Data_directory#Mac : Mac By default Bitcoin will put its data here: ~/Library/Application Support/Bitcoin/ You can access that folder by ...
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3 votes
Accepted

Can I ignore the blocks directory for time machine backups on OSX?

Yes, it is completely safe to exclude the blocks directory from your backup process. In the event that you lose all your files and need to restore from backup, Bitcoin will download all missing ...
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  • 3,421
3 votes
Accepted

After downloading the entire Bitcoiin blockchain from a torrent, what are my next steps to link it to Bitcoin Core 0.17.1?

There is no general purpose to using a torrent? Dude have you ever tried to download the blockchain it takes ages, at first it goes fast for 2 days then it slows down to 0,03% speed per hours (mean ...
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3 votes

Error compile bitcoin mac OS

I had the same issue, seems like the problem is that I had both qt5 and qt6 installed, and it used qt6. Try running: brew uninstall qt brew install qt5
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  • 31
2 votes

No menu in Ubuntu bitcoin-qt

This solved it on Ubuntu: sudo apt-get remove appmenu-qt5 and the menu was visible when bitcoin-qt (bitcoin-0.13.0rc1, compiled from source) restarted.
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  • 21
2 votes

Bitcoin core does not have all unconfirmed transactions

In general, mempools are not guaranteed to be the same node-to-node. The behavior of the reference client is that once mempools reach 300MB, the lowest fee tx's are thrown away. It's possible your ...
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  • 7,639
2 votes
Accepted

0 active connection to bitcoin network (testnet)

This worked for me: addnode 185.28.76.179:18333 This "well connected testnet node" was suggested to me here.
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  • 758
2 votes
Accepted

Does GNOME or KDE desktop enviroment matter, at running a BitcoinCore node?

The particular desktop environment does not have a direct impact as long as you have the necessary libraries for running Qt applications. On Debian (or Debian-Based distributions, such as Ubuntu) the ...
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2 votes
Accepted

How to start Bitcoin-qt with Bitcoin Cash?

Bitcoin ABC 0.16.1 binaries for linux have a QT GUI: https://download.bitcoinabc.org/0.16.1/linux/ - I have not checked the other platforms, but I assume they do too. They kept the same binary names (...
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2 votes

How to compile Bitcoin-Qt as an .exe on Ubuntu?

An alternative solution would be to build a tarball archive like the one you can download from the Bitcoin Core website. To do that you have to follow the release process, as explained in: https://...
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  • 632
2 votes

Getting Started With Script

You might want to check out btcdeb from kallewoof. It's a set of tools used to construct or debug bitcoin script.
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  • 1,372
2 votes
Accepted

Do I really have to place my wallet file in the data directory?

If you want your wallet database (file) to be in a different directory than your data directory, you can use the -wallet=<path> startup option to specify a custom path to your wallet. Quoting ...
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2 votes

Should I Encrypt my Wallet for Cold Storage?

From Bitcoin Wiki: Wallet encryption uses AES-256-CBC to encrypt only the private keys that are held in a wallet. The keys are encrypted with a master key which is entirely random. This master key is ...
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2 votes

Can I see transactions in bitcoin-qt without downloading blocks? if I have a server with blocks on the local network?

It doesn’t work because the software doesn’t support operating like that. You can not connect bitcoin-qt to a remote RPC server.
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  • 15.1k
2 votes

Can I remove the initial bitcoin folder after installing its binaries to /usr/local/bin?

Yes, after you've checked if bitcoin is properly "installed" by checking its version you can remove the ~/Downloads/bitcoin-0.20.1. Be sure to double-check the processes and be careful ...
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  • 1,584
2 votes

Payout address format has changed?

This is a BIP173 native segwit address. If you unselect the "Generate native segwit (Bech32) address" checkbox in bitcoin-qt, you'll get a P2SH 3xxx address instead. Most senders these days ...
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2 votes

Can I merge blockchain downloads?

You can't merge them, but you can just copy the old blocks/ and chainstate/ subdirectories of an old install that you trust. It'll just continue where you left off then.
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