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Showing 20 of 55 results by defa1
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Topic
Board Development & Technical Discussion
Merits 8 from 3 users
Topic OP
Wallet fingerprinting
by
defa1
on 14/10/2021, 20:43:37 UTC
⭐ Merited by o_e_l_e_o (4) ,ETFbitcoin (3) ,Quickseller (1)
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!
Post
Topic
Board Bitcoin Discussion
Re: BWT: Connecting Electrum directly to Bitcoin Core
by
defa1
on 20/07/2021, 15:28:29 UTC
Most people probably would just use Bitcoin Core alone without having to loop through an Electrum instance.

I'd say it's good if you absolutely need to use Electrum but using Bitcoin Core would be far simpler. With pruned node, you can't really scan the transactions beyond the prune limit. Anyhow, it seems to be quite limited in functionality.

A lot of people are using Electrum though, that's what they are used to. Personally, I would love to only use Bitcoin Core with my Coldcard but I'm so used to Electrum now it's hard to switch. Core uses sats / kilobyte for some reason while everything else uses sats / vbyte which might seem like a small thing but I hate. Also you can't freeze addresses in Core.

True about the pruned node, but this is not an issue when setting up a new wallet. If you have an unpruned node you can prune it after you've connected Elecrum.
Post
Topic
Board Bitcoin Discussion
Topic OP
BWT: Connecting Electrum directly to Bitcoin Core
by
defa1
on 20/07/2021, 14:55:40 UTC
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
Post
Topic
Board Beginners & Help
Re: Looking for advice: gifting a paper wallet
by
defa1
on 17/07/2021, 01:18:23 UTC
My desktop Electrum is connected to myNode running Electrs and Samourai to Dojo on myNode. I couldn't get the android version of electrum working with myNode yet so that's using public servers.
Post
Topic
Board Beginners & Help
Re: Looking for advice: gifting a paper wallet
by
defa1
on 16/07/2021, 21:39:00 UTC
Ok so a little update... I created and printed out the paper wallet, it has the address bc1qrwc85tjunwql9zu9gew3q7knf70mv73tghtqyr and as you can see I deposited a small amount of Bitcoin on it. I tried creating a watch only wallet in Electrum (android) to see if it worked and... nothing. No funds on that address whatsoever. I tried sweeping the wallet with Electrum (both android and desktop) and Samourai Wallet and while they recognize the private key they don't find any UTXO...

What the fuck is going on?
Post
Topic
Board Beginners & Help
Merits 2 from 1 user
Re: Looking for advice: gifting a paper wallet
by
defa1
on 16/07/2021, 17:38:23 UTC
⭐ Merited by ETFbitcoin (2)
Quote
By any chance, are you talking about software provided by Coldcard (coldcard-paper-wallet-templator & wordlist-paper) or built-in Coldcard feature (https://coldcardwallet.com/docs/paper-wallets)?

I'm talking about the build in paper wallet generator on the device itself.
Post
Topic
Board Bitcoin Technical Support
Re: Looking for advice: gifting a paper wallet
by
defa1
on 15/07/2021, 21:02:50 UTC
Thanks for all the good advice here. https://iancoleman.io/bip39/ seemed the best option but I just discovered that my coldcard has a built in paper wallet generator so I'm going to use that.
Post
Topic
Board Bitcoin Technical Support
Merits 15 from 6 users
Topic OP
Looking for advice: gifting a paper wallet
by
defa1
on 13/07/2021, 12:58:42 UTC
⭐ Merited by DdmrDdmr (5) ,Welsh (4) ,ETFbitcoin (2) ,vapourminer (2) ,bitmover (1) ,Porfirii (1)
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.
Post
Topic
Board Electrum
Re: Best electrum server?
by
defa1
on 06/07/2021, 13:49:50 UTC
If you can make the full node run somewhere else then all electrum server choices don't require a lot of resources to run.

So if you have a bitcoin core instance already running like on your personal desktop, you can expose ports on your router and then run the electrum server standalone (assuming you want to run them on different machines, instead of also on the personal desktop) then give the server the ip address and port of Bitcoin Core.

That's funky, point my Raspberry Pi with ElectrumX to my desktop and then point my Electrum on my desktop to my Raspberry Pi :-) But that's not what I want to do. I have Bitcoin Core running on my Pi and I would like to run an electrum server on the same device. Do you think my 8GB Pi 4 can handle ElectrumX + Bitcoin Core?
Post
Topic
Board Electrum
Re: Best electrum server?
by
defa1
on 06/07/2021, 08:20:50 UTC
I want to set up an Electrum server for my desktop and mobile Electrum wallets. If I can offer it over Tor to strangers like a do with Core that's a nice donation to the network. A lot of Electrum servers must be honeypots so it would be great if more trustworthy servers existed.

The question is if I have the hardware run ElectrumX? I have a Pi 4 with 8GB of RAM, do you think this is sufficient hardware to run Electrumx? I doubt I'll get a lot of incoming connections since I'll only be offering it as a hidden service.
Post
Topic
Board Bitcoin Technical Support
Merits 3 from 2 users
Topic OP
Best electrum server
by
defa1
on 05/07/2021, 20:46:57 UTC
⭐ Merited by pooya87 (2) ,ETFbitcoin (1)
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. What are the general benefits and drawbacks for both?
Post
Topic
Board Bitcoin Technical Support
Re: bitcoin.conf and datadir in different directories
by
defa1
on 05/07/2021, 16:44:52 UTC
How would you use this in relation to managing bitcoind?
Post
Topic
Board Bitcoin Technical Support
Re: bitcoind unable to read settings.json on external ssd
by
defa1
on 04/07/2021, 18:03:11 UTC
Yeah, I assume the VFAT option was originally chosen for compatibility with Windows? Huh

No I only used the drive with Raspberry Pi OS before. Just plugged it in and it worked although maybe they formatted it for Windows by default during production.
Post
Topic
Board Bitcoin Technical Support
Re: bitcoin.conf and datadir in different directories
by
defa1
on 04/07/2021, 18:01:24 UTC
I'm not familiar with symbolic links yet.
Post
Topic
Board Bitcoin Technical Support
Re: bitcoind unable to read settings.json on external ssd
by
defa1
on 03/07/2021, 09:00:09 UTC
I deleted everything on the drive and formatted in ext4.
Post
Topic
Board Bitcoin Technical Support
Re: bind= option in bitcoin.conf
by
defa1
on 03/07/2021, 08:58:52 UTC
But isn't this is only relevant if you accept incoming connections? If I'm not mistaken, Bitcoin will not accept connections when running behind a proxy, except if you define listen=1.
Post
Topic
Board Bitcoin Technical Support
Re: bind= option in bitcoin.conf
by
defa1
on 02/07/2021, 23:16:20 UTC
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?

The -bind option listens for Tor connections on the address you give it, on port 8334 if you don't pass a port like your first bind syntax, so no, since the address is already connected as a SOCKS proxy.

So adding bind=127.0.0.1 does nothing? What's the point of this setting then?
Post
Topic
Board Bitcoin Technical Support
Topic OP
bind= option in bitcoin.conf
by
defa1
on 02/07/2021, 17:47:56 UTC
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?
Post
Topic
Board Bitcoin Technical Support
Re: bitcoind unable to read settings.json on external ssd
by
defa1
on 02/07/2021, 17:41:46 UTC
I formatted the drive to ext4 and it still wouldn't work, but now I was able to chown /mnt/bitcoin so I finally started IBD!!
Post
Topic
Board Bitcoin Technical Support
Merits 1 from 1 user
Re: bitcoin.conf and datadir in different directories
by
defa1
on 02/07/2021, 17:40:37 UTC
⭐ Merited by HCP (1)
I can confirm that it only impacts /blocks which is a pitty but ok I put the entire datadir on the ssd then