5 votes
Accepted

What is the October 2022 bug in LND, what caused it and what would prevent a similar bug in future?

There was a bug in LND and btcd which was exposed by a perfectly valid 998-of-999 Taproot multisig transaction broadcast by Burak on October 9th 2022. This transaction met the Taproot consensus rules ...
4 votes

What are Bitcoin Lightning Watchtowers exactly doing for the network and users?

Watchtowers are monitoring for attempted Lightning channel closes using revoked states and when they identify one they can broadcast the justice transaction claiming all (eltoo may change this in ...
4 votes

Is eltoo more memory efficient for watchtowers?

Without eltoo (ie today) a watchtower needs to store a different justice transaction for every channel update in case the channel counterparty broadcasts (deliberately or accidentally) an expired ...
4 votes
Accepted

Does eltoo require trusting watchtowers not to close channels?

I was intrigued by your question and tried to figure out whether any trustless solutions have been proposed. I found a [Lightning-dev] mailing list thread positing a rough idea by ZmnSCPxj. Z-man ...
  • 66.1k
3 votes
Accepted

What is the current status of watchtower implementations in October 2022? Are they mature, widely in use?

There is a draft BOLT for watchtowers here. As of October 2022 Eye of Satoshi currently supports Core Lightning but it doesn't support LND or eclair. LDK support is in the works. The Eye of Satoshi ...
2 votes

Watchtower limitations and possible solutions so far in 2021-Nov?

The capacity of the lightning network seems to ride on the "trust" of the counterparty you are opening a channel with along with the additional layer of trusting a watchtower to keep your ...
2 votes
Accepted

How much do Bitcoin Lightning Network Watchtowers make in fees to justify their 24/7 server uptime costs?

It is still very early in the evolution of the Lightning Network and I don't think anyone, watchtowers or even routing nodes, is making that much money at the time of writing. Talaia Labs is working ...
2 votes
Accepted

What if all nodes on the lightning network were watchtowers by default?

Not sure if I get exactly what you are asking for. But some general remarks and thoughts should hopefully give you all the information you need to answer your question. A watchtower basically needs ...
2 votes
Accepted

Why is the privacy for using watch tower services increased with unpredictable commitment tx ids?

Actually, the BOLT has been designed with very strong privacy properties with regard to watchtowers. You can give all your commitment tx id first halves to one watchtower and it still doesn't learn ...
2 votes
Accepted

Network of 3rd-parties to monitor for Lightning Network theft transactions

I've asked the Lightning developers on Slack and this was their response: Please note that things might change in the future.
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2 votes

How do "trustless third-party watchers" work in Lightning Network?

I suppose that when you refer to "third-party watchers" you mean watchtowers. I do agree that 'trustless' is probably an ambiguous word in this context. At the time of writing, the only actual ...
  • 567
1 vote
Accepted

What is the November 2022 bug in LND, what caused it and what would prevent a similar bug in future?

This November 2022 bug is very similar to the October 2022 bug. This time it impacted a number more open source projects (e.g. Liquid and LDK) as rust-bitcoin also wasn't able to deal with the ...

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