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News: Latest Bitcoin Core release: 26.0 [Torrent]
 
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1  Bitcoin / Development & Technical Discussion / Wallet fingerprinting on: October 14, 2021, 08:43:37 PM
I'm looking for information about how wallets can be fingerprinted based on locktime, RBF, etc... but there isn't a wealth of information available.
Can somebody point me to some articles/docs/wiki ?
Thanks!
2  Bitcoin / Electrum / BWT: Connecting Electrum directly to Bitcoin Core on: July 20, 2021, 02:55:40 PM
Just wanted to plug a nice piece of software that I've come across: Bitcoin Wallet Tracker - Electrum Plugin

It allows you to connect Electrum directly to your node without having to set up and Electrum Server. You can use it with a pruned node and with multiple Electrum Wallets, only limitation is that you can only use it with a hardware wallet.

https://github.com/bwt-dev/bwt-electrum-plugin
3  Other / Beginners & Help / Looking for advice: gifting a paper wallet on: July 13, 2021, 12:58:42 PM
A friend of mine recently had his first child and we are all going to visit and bring gifts. I want to gift $10 in btc not to be accessed until his kid is an adult, by which time it will be worth a lot more or nothing at all.

I'm trying to figure out the best way to do this so that in 20 years the btc can still be recovered. Do I make a wallet, write down the seed phrase, send in some bitcoin and then destroy the wallet? Or do I write down the private key for the specific address where I send the bitcoin to? And which wallet? Electrum doesn't use BIP39, but a BIP39 seed phrase isn't guaranteed to work with every BIP39 compatible wallet either... What about derivation paths?
Is there a secure way to generate a paper wallet offline with a QR code and everything?

I have no experience with paper wallets so any advice is welcome.
4  Bitcoin / Electrum / Best electrum server? on: July 05, 2021, 08:46:57 PM
I'm looking to install an Electrum server. Only condition is it can be used to serve multiple wallets at the same time so Electrum Personal Server is not an option. Currently I'm looking at Electrumx and Electrs

1. Are there any other projects I should be aware of?
2. Can I use Electrs to serve random users from across the internet like I can with Electrumx?
3. Can I create a Tor hidden service for both? Clearnet is not an option.
4. What are the general benefits and drawbacks for both?
5  Bitcoin / Bitcoin Technical Support / bind= option in bitcoin.conf on: July 02, 2021, 05:47:56 PM
I have a node running with Tor running as a service and proxy=127.0.0.1:9050 in the bitcoin.conf file. Does it make any difference if I add bind=127.0.0.1 and/or bind=127.0.0.1:9050 to the file?
6  Bitcoin / Bitcoin Technical Support / Looking for advice on a full node on: June 30, 2021, 07:47:39 PM
I've been running Core on my computer for a while, but now it's time to turn my Pi into a more fully featured node. WIth lightning, electrs, and all that other good stuff. I've been looking at some full node products and evaluating the benefits. So far I've come across: myNode, Raspiblitz, Umbrel. Nodl One/Dojo and Start9 are expensive and I already have the hardware so I'll pass.

Does anyone recommend either of these projects or know of other projects that I should consider and why? So far I'm most interested in myNode and Raspiblitz. I know Umbrel is easy but I heard the security isn't the best.

Any recommendations welcome!
7  Bitcoin / Bitcoin Technical Support / bitcoin.conf and datadir in different directories on: June 29, 2021, 11:48:47 PM
can I have the bitcoin.conf file in ~/.bitcoin and my datadir on an external ssd? Let's say I have a bitcoin.conf file in ~/.bitcoin which includes the argument 'datadir=/mnt/bitcoin' (this being where my ssd is mounted)

Can I then simply run bitocoind without arguments and will this work?
8  Bitcoin / Bitcoin Technical Support / bitcoind unable to read settings.json on external ssd on: June 29, 2021, 02:28:26 PM
I installed ubuntu server on my pi and attached and mounted an external ssd which already contains a bitcoin datadirectory. When I run:

bitcoind -datadir=/media/external/bitcoin-datadir -conf=/media/external/bitcoin-datadir/bitcoin.conf

I get as a result:

Error: Failed saving settings file:
- Error: Unable to open settings file /media/external/bitcoin-datadir/settings.json.tmp for writing

I'd be grateful is anyone can assist with this.

edit: I was using the SSD before with bitcoin-qt if that makes any difference
9  Alternate cryptocurrencies / Altcoin Discussion / Question about Monero from a Bitcoin maxi on: June 19, 2021, 02:15:25 PM
I've been in crypto for the last 4 years and I've been a maxi for the last 3. However, I've always had respect for the Monero project. Can somebody make the case why Monero does not live up to it's promises / is a scam / will fail?

More specifically I'm interested in the hearing arguments about the following issues:

a) Is Monero as suited for it's stated goal of private transactions as it claims
b) Is it better suited to this goal than using properly coinjoined btc over Tor
c) Is Monero actually decentralized to a decent degree
d) Why Monero will fail in the long run
10  Bitcoin / Bitcoin Technical Support / Incoming connections over Tor on: April 17, 2021, 08:18:27 AM
I want to accept incoming connections to my node while running everything over Tor to shield my IP. I'm running Core on a Pi, ufw is inactive and I have no open ports on my router (I read this is not necessary to accept incoming connections over Tor?). My node has been running and fully synced for days but still only has the standard 10 outgoing connections and 0 incoming

In the debug.log file I can find the following lines (xxxxxxxx being a v3 onion address):

tor: Got service ID xxxxxxxx, advertising service xxxxxxxx.onion:8333
AddLocal(xxxxxxxxx.onion:8333,4)

My bitcoin.conf file has the following lines:

disablewallet=1
proxy=127.0.0.1:9050
bind=127.0.0.1
listen=1

and my torrc has the following lines:

ControlPort 9051
CookieAuthentication 1
CookieAuthFileGroupReadable 1

Anybody have an idea?
Thanks
11  Bitcoin / Bitcoin Technical Support / Bitcoin Core and Tor on: February 06, 2021, 05:10:36 PM
I'm running Core 0.21.0 on Ubuntu 20.04 with Tor running in the background as a service. I'm interested in running Core over Tor, but I'm confused by the options offered to me in the GUI under Options > Network.

Could someone explain to me the difference between these 2 options:

- Connect through SOCKS5 proxy (default proxy)
- Use seperate SOCKS5 proxy to reach peers via Tor onion services

In case it matters, I do not allow incoming connections.
12  Bitcoin / Bitcoin Technical Support / Broadcasting transactions and privacy on: January 27, 2021, 10:01:54 PM
Let's say you're running Bitcoin Core over clearnet, no Tor or proxies, and you do a bitcoin transaction. Is there a difference in privacy if you are a) running a full node but not accepting incoming connections or 2) running a full node and accepting incoming connections?

As far as I understand, if your node is not configured to accept incoming connections you will only broadcast your own transaction, making it easy to see that this transaction originated from your IP address. But if you are accepting incoming connections you are constantly broadcasting stuff so it becomes much harder to pinpoint the origin of a transaction.

Is this correct?
13  Bitcoin / Bitcoin Technical Support / Ridiculous tray icon bug on: May 07, 2020, 05:09:36 PM
Hi,

I installed Core a month ago on Linux Mint 19.3 Cinnamon, downloaded the blockchain and pruned it. For a while everything worked fine until suddenly the tray icon disappeared. I went to Options -> Windows only to see that 'Hide tray icon' is selected and greyed out and that 'Minimize to the tray instead of task bar ' is also greyed out (but not selected). So know I have to keep it minimized in the taskbar where it only takes up unnecessary space.

It seems the problem started when I tried to set up an Electrum Personal Server, because before I could minimize to the tray instead of the task bar...

I've since deleted the files in usr/local/bin (which were all bitcoin core related) and also deleted ~/.bitcoin

I've reinstalled Bitcoin Core and the problem hasn't gone away. I checked right after I running it the first time and yes, it's greyed out again.

Obviously I'm relatively new to Linux and there is probably a simply and obvious solution that I'm missing.

I would be very grateful if somebody would be able to help me.
14  Bitcoin / Electrum / Setting up ledger with electrum on: August 01, 2019, 06:53:54 PM
Hi everyone,

I'm trying to set up Electrum to work with my Ledger Nano S. I got Electrum installed in Windows and the set up process seems to work, but after I created the wallet none of my past transactions seem to show up. I'm guessing this has something to do with the script and derivation path that I chose, but I don't know which ones I should choose to make it work. Here are the steps I followed when setting up the wallet:

default_wallet
Standard wallet
Use a hardware device
An unnamed ledger [ledger, initialized, hid]

It does not ask for an account number.

Then I come to the "Script type and Derivation path".

legacy (p2pkh)
p2sh-segwit (p2wpkh-p2sh)
native segwit (p2wpkh) [this one is selected by default]

derivation path: m/84'/0'/0'

So I select native segwit (p2wpkh) as script type and m/84'/0'/0' as the derivation path. I can create my wallet but nothing shows up under history or anywhere else. Electrum is connected to 10 nodes.

Any help setting up my ledger with electrum would be greatly appreciated!

HODL
15  Other / Politics & Society / Bitcoin, MMT, Austrian economics on: March 30, 2019, 06:49:05 PM
Hi everyone,

First of all, I wanted to post this in the 'Serious Discussion' page but for some reason the 'new post' button doesn't show up there so I'll post it here.

Secondly, I know I want make myself popular bringing up MMT here but bear with me.

I have been reading a lot about economics recently, and more specifically the MMT people as well as stuff from Steve Keen, who has a lot of overlap with some MMT ideas. Now, I don't claim to understand the finer details the theory, but I do think I have a good understanding of their their main points.
More specifically, their point that the US government creates USD by spending it into existence and that the real problem is not if the government can afford things but rather if the economy has the spare productive capacity to absorb the money government spends to prevent inflation from getting out of control.

It is way more nuanced than that of course, but I do think they have a valid point here. Even Austrians must admit that federal tax dollars don't actually 'fund' anything and that the government creates money out of thin air by spending it.

Now I want to understand the opposite view as well, more specifically the Austrian/gold standard point of view. Can anyone recommend some interesting texts or YT videos for beginners/intermediates? More specifically I'm interested to learn why they think that a monetary system that has a final supply of money could ever work.

Honestly I don't understand how an economy can work without a small amount of inflation (even though that has downsides as well). Because of what I've learned from MMT, I don't worry about hyperinflation happening in the West so much anymore and I definitely don't buy the idea of new gold/bitcoin standard as a basis for the economy.

I still own bitcoin, and I'll probably buy more, but MMT has impacted my view of it to be honest. But, I am open to educate myself about the opposite view so here I am.

Thank you.
16  Bitcoin / Bitcoin Technical Support / Wallet backup - New to Bitcoin Core on: February 13, 2019, 09:31:22 PM
Hello everyone,

I'm glad to say that I finally started running my own full node. I am experimenting with it and I have a question about my wallet. As soon as I set up my node I encrypted my wallet and backed it up to an external HDD. No I wonder how often I have to back up the wallet.dat file? I just received my first transaction, should I make a new back up.

What I find odd is that in the bottom right corner of my I can see that "HD key generation is enabled".
It was my understanding that HD wallets basically mean you write down a recovery seed and you can always restore your wallet using that seed. Does this mean that my initial wallet back up after downloading Core is sufficient and that I don't have to do a backup every week or so?

Thanks!
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