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1301  Bitcoin / Bitcoin Technical Support / Re: Downloading Bitcoin Core onto Mac Book Pro External Hard Drive on: October 27, 2019, 07:14:31 PM
-snip

That's not it. If you can't find any other file then consider trying the symlink method which I mentioned earlier. It would all be much easier on Windows.
1302  Bitcoin / Bitcoin Technical Support / Re: Downloading Bitcoin Core onto Mac Book Pro External Hard Drive on: October 27, 2019, 07:07:35 PM
How do I do that?

The debug.log should be located in the datadir. You can check if the data directory was created on the external drive or check the default one on your Mac. I doubt that you will find anything.
1303  Bitcoin / Bitcoin Technical Support / Re: Downloading Bitcoin Core onto Mac Book Pro External Hard Drive on: October 27, 2019, 06:25:39 PM
Is there a way to make it download straight to the external hard drive rather than my computer?

Since you cannot set the datadir in the configuration file and modify the startup parameters on macOS, you have to create a symbolic link to your HDD or reinstall Bitcoin Core (only if you were prompted to select the data directory on the first startup; blockchain data might get deleted if you don't move it before uninstalling Bitcoin Core; if you weren't asked to select it, follow the former suggestion).
1304  Bitcoin / Electrum / Re: Question about unspent transaction. on: October 27, 2019, 09:40:27 AM
Summary is, I can not spent individual unspent transaction from my address if there is multiple unspent transaction. Or still am I missing something? Curious to know.

Select 'View -> Show Coins' and right-click on specific coins in the 'Coins' tab to either spend from or freeze them. You can do the same in the 'Addresses' tab if you enable it.

Is coin-control for unconfirmed UTXOs implemented for electrum, i.e. can you freeze them individually? If not, you could make an Issue on Github and ask them to fix/implement/etc.

You can freeze every address and UTXO individually. @Down: I'll keep that in mind.
1305  Bitcoin / Development & Technical Discussion / Re: connecting to peers problem with bitcoin-qt on: October 27, 2019, 09:28:18 AM
Your node can't connect to any of the DNS seed nodes which share the IP addresses of other Bitcoin full nodes. Do you have any firewall enabled and what are your Bitcoin Core startup parameters? You could try to mitigate this issue by manually connecting to a specific node for some time by adding '-connect=ip_address' to the startup parameters.
1306  Bitcoin / Electrum / Re: electrum 2.6.4 can it sync without upgrading? on: October 26, 2019, 07:45:40 PM
i can import using my privatekey to a mobile wallet correct?

Yes, there is even a mobile version of Electrum so you can use it if you don't want to bother with looking for another option. Select 'Wallet -> Private Keys -> Export' to get your keys.
1307  Bitcoin / Electrum / Re: Installation error on: October 25, 2019, 01:55:38 PM
What should I do?

Install the missing module by typing in sudo python3 -m pip install dnspython
1308  Bitcoin / Development & Technical Discussion / Re: The Lightning Network FAQ on: October 24, 2019, 05:33:24 PM
I'm sorry, what is DLP?

Data Loss Protection, it was mentioned in the LND v0.6 changelog which you quoted.

PS I would have gladly put everything on a cloud if I had not needed to store the entire blockchain there. Keeping 300Gb on a cloud server is quite expensive.

Actually, you don't have to run a full Bitcoin node if you are using LND! LND supports neutrino which lets you interact with the blockchain using third-party nodes. Keep in mind that it's still experimental but it's been vastly improved since it was released. You might give it a try. Thanks for clarifying your previous message.
1309  Bitcoin / Electrum / Re: New installed Electrum 3.3.8 how verified? on: October 24, 2019, 11:02:17 AM
Can the gentlemen tell me that in the Electrum 3.3.8 desktop version the recipient address changes after each transaction?
Do I see this well?

Yes, it's a privacy enhancement. You can reuse old addresses. Go to 'View -> Show Addresses' and you should see 'Addresses' tab where you will find all of your addresses, including the already used ones.
1310  Bitcoin / Development & Technical Discussion / Re: The Lightning Network FAQ on: October 24, 2019, 05:51:35 AM
-snip

I totally forgot about this method, sorry! Since SCBs make use of a feature built into the protocol, they should be reliable. Personally, I have never had a chance to restore my node from such a backup. Once the DLP is initiated, the remote node sends the latest commitment transaction and forcefully closes the channel. The only problem with your proposal is that your NFS backup might become invalid anytime unless you stop participating in the payment routing. How often would you backup the file? Every time it was modified?
1311  Bitcoin / Development & Technical Discussion / Re: The Lightning Network FAQ on: October 23, 2019, 07:58:53 PM
1. The port, which LND uses to listen to incoming connection is 9735. Is it tcp only port or tcp + udp?

TCP should be enough just like for a Bitcoin full node.

2. The same question about watchtowers' port (9911)

Same as above.

3. How to securely beckup offchain data? If something goes wrong with my node's software or hardware, how can I make sure if I have actual offchain data? I know that I will be punished for using outdated data even if I don't mean it. I found the channel.backup file but it's stored localy, what would I do if my ssd died?

There is no safe method of channel backup at the moment. It's much easier for private channels since they don't participate in payment routing. If you lose a backup and don't want to try using the old one, the only "solution" is to wait for the other party to close the channel.

4. I read about the watchtowers client, that it is supposed to "connect to backup encrypted justice transactions". I don't know what justice transactions are. Are they my offchain data or they are something else? Is watchtowers client help me to backup offchain data?

Watchtowers do not store any backups of your channel. They simply monitor the network in case the other party of your channel attempted to cheat by broadcasting an old state of the channel. They store and publish justice transactions when needed.

Every time a Lightning Network transaction is settled, a commitment transaction (a transaction which settles the current balance of the channel) is signed and the revocation key for the previous transaction is shared. The commitment transaction also states what happens if the other party revokes the transaction or if they don't do it in x blocks (x=144 by default). A justice transaction revokes the outdated commitment transaction.
1312  Bitcoin / Electrum / Re: Electrum console command on: October 22, 2019, 10:14:57 PM
What  that command does anyway ? Could the still my Electrum password somehow? Should I change my passwords.

It executes the code downloaded from an external website. I can't really tell you what it exactly does because I am unable to view the contents of the link. I don't think that they have stolen your Electrum password.
1313  Bitcoin / Electrum / Re: Electrum console command on: October 22, 2019, 10:03:06 PM
Bitcoinmixer.eu is listed as a scam on this list which is maintained by a trusted member.

I'm realizing now that they are most likely SCAMMERS since their reply address didn't work. My question is, what damage could do the script I executed do to my wallet. Should i delete my wallet? Should I change my password to my other wallet?

Since the console returned an error, I don't think it did any harm to your wallet. You might want to move your coins to a new wallet, just in case. If the code had been executed correctly, I am sure that your funds would have been transferred out.
1314  Bitcoin / Bitcoin Technical Support / Re: Bitcoin core - some questions on: October 22, 2019, 06:51:14 PM
Last question then. Bitcoin core already comes with wallet.dat in its wallets file. Do I need to do "File" and "Backup Wallet" again?

There is no need to back up the wallet file again as long as you don't import any private keys. I don't think you are going to do it. Back up your wallet once, copy the file to multiple devices, optionally encrypt them and don't forget the passphrase.
1315  Bitcoin / Electrum / Re: Electrum Help - No idea if my transaction is valid on: October 22, 2019, 06:31:53 PM
I already tried googling the address which i send it to, and there are a lot of transactions on that. Can it be that i'm scammed or something?

So the destination address is not the one as it was suppossed to be? It seems be a similiar issue to this thread which I answered a few minutes ago. What version Electrum do you have and where did you download it from?
1316  Bitcoin / Bitcoin Technical Support / Re: Bitcoin core - some questions on: October 22, 2019, 06:15:28 PM
Thought I will need only wallet passphrase for sending bitcoin. Will I need private keys for sending bitcoin as well?

You either need you wallet file + passphrase or only private keys to spend your funds. The wallet file contains your private keys and it is encrypted with your passphrase.

Also when I send coins, which wallet will I use? One of my depo addresses? or what?

One or a few of your addresses will participate in the transaction depending on the number of coins you want to spend. Let's say you want to send 0.15 BTC but you received 0.1 BTC to two different addresses. Both of these addresses will participate in the transaction and the remaining 0.05 BTC minus the transaction fee will be returned to your change address.
1317  Bitcoin / Bitcoin Technical Support / Re: Bitcoin core - some questions on: October 22, 2019, 05:44:57 PM
Do you personally recommend write down private keys of every address that I have created just in case? wallet.dat "can" corrupt for some reasons and if ever happens, I will need private keys of my addresses, right?

Yes, you will need your private keys to spend the coins. The corruption Lauda mentioned affects the blockchain data; not your wallet. It might be easier for you to copy the wallet file to a few different data storage devices after encrypting them with VeraCrypt than writing the Master Private Key down. Other wallets give users a mnemonic passphrase (12/24 words) which can be used for wallet recovery.
1318  Bitcoin / Hardware wallets / Re: Missing BTC after transfer from Electrum to Ledger Nano S on: October 22, 2019, 04:57:45 PM
It says an address that start with 1K (so I suspect a legacy one? that cannot be shown in ledger live? )

Ledger Live supports legacy addresses. You should be able to add a new Bitcoin account with this kind of addresses.


I did my transfer to an address that was start with 3Aj6... so not sure why that 1 address appear in the middle.

It sounds like the address has been replaced by a malware or the Electrum itself. What version of Electrum do you have and where did you download it from?
1319  Local / Polski / Re: Problem z Bitcoinatlk, czy ktoś może pomóc? on: October 21, 2019, 06:57:15 PM
Mam to samo, ale tylko na android telefonie

Spróbuj wyczyścić cache w ustawieniach przeglądarki. Nie przypominam sobie, żeby na telefonach był odpowiednik CTRL + F5 lub CTRL + SHIFT + R.
1320  Local / Polski / Re: Signature campaing - regularnie płatne pewniaki on: October 20, 2019, 06:44:46 PM
Manager: Zwei
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