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How To Set Up A Watchtower For An Umbrel Bitcoin Lightning Node

by Crypto News
October 30, 2021
in Bitcoin
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How To Set Up A Watchtower For An Umbrel Bitcoin Lightning Node
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This information will present you how one can rapidly and simply defend your funds in your Bitcoin Lightning channel.

The Lightning Community is a trustless* Layer 2 community for Bitcoin and brings forth many enhancements in pace and price of ultimate settlement. I exploit an asterisk on trustless as a result of though it’s, there are a couple of caveats to take into accounts in order that your funds are secure, apart from regular sizzling pockets dangers. Watchtowers, which we’ll cowl right now, make sure that your funds are secure from malicious channel closures, which is without doubt one of the major dangers of working a well-capitalized Lightning node.

Lightning channels are at present constructed by organising a two-of-two multisig tackle, through which your funds are locked up with one other occasion. Both occasion has the key to revoke the multisig contract and settle up at any time, however provided that each nodes are on-line can or not it’s closed instantly. In case your node did go offline, the opposite occasion has to both wait so that you can come again on-line or drive shut the channel. Now, drive closing isn’t at all times an enormous concern, particularly if you happen to’re utilizing the Lightning Community with friends that you just belief already, however because the Lightning Community grows and its use instances develop, you’ll inevitably begin interacting with friends whom chances are you’ll not know, and so it is vital to study to defend your node in opposition to malicious closures.

If a malicious peer have been to shut a channel with a false steadiness state, and you do not come on-line to rebroadcast and declare the precise steadiness inside sufficient time, they will get your whole funds within the channel. Watchtowers defend in opposition to this by preserving a working tab of your channel balances and defending in opposition to malicious closures. If a foul actor have been to shut a channel when you have a watchtower energetic in your Lightning node, they may immediately be penalized by what’s referred to as a justice transaction as a substitute of you, and you’ll get all of their funds as a substitute of them getting yours.

On this video, we clarify how watchtowers work to guard your funds inside Bitcoin Lightning channels and present you ways to connect with Voltage.Cloud’s free, LND Tor-based watchtower service.

This considerably reduces the operational threat of working a capitalized Lightning node in my view. Whereas it doesn’t essentially scale back the chance of drive closures on a crashed node with static backups and will nonetheless be an costly incident to get better, not less than this may defend your funds in opposition to malicious channel companions who could attempt to steal your funds if a {hardware} failure occasion have been to happen.

At the moment Voltage.Cloud runs this service altruistically, too. Fairly candy, huh?

Thanks for trying out our video. Full steps beneath.

https://www.youtube.com/watch?v=tmgh18QE4eA

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

1) Right here is the code so as to add to the underside of lnd.conf file:

[wtclient]

wtclient.energetic=true

2) Then, after you restart, run from root through SSH:

docker exec -it lnd lncli wtclient add 0301135932e89600b3582513c648d46213dc425c7666e3380faa7dbb51f7e6a3d6@tower4excc3jdaoxcqzbw7gzipoknzqn3dbnw2kfdfhpvvbxagrzmfad.onion:9911

3) Lastly, to verify the watchtower is energetic run:

docker exec lnd lncli wtclient towers

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Video Timestamps:

0:00 Intro

0:30 Watchtowers defined

2:27 Downloading PuTTY to entry node through command line

3:20 Modifying lnd.conf file through SSH

5:40 Restarting node

6:05 Including Voltage.Cloud’s Tor Watchtower through SSH

7:05 Verifying the Watchtower was efficiently added

7:37 Watchtower privateness

8:22 Outro

It is a visitor put up by BTCBap. Opinions expressed are completely their very own and don’t essentially replicate these of BTC Inc or Bitcoin Journal.

The views and opinions expressed herein are the views and opinions of the creator and don’t essentially replicate these of Nasdaq, Inc.



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