Unanswered Questions
236 questions with no upvoted or accepted answers
9
votes
0
answers
222
views
What are the advantages to attackers of different styles of replacement cycle attacks?
In Antoine Riard's
original description of replacement cycle attacks against HTLCs, a replacement cycle looks like this:
Bob broadcasts an HTLC-timeout (input A, input B for fees, output X)
Mallory ...
5
votes
1
answer
270
views
How to compute the expected number of sats to arrive in a probabilistic payment flow?
Look at the following network example:
Assume S wants to send 3 sats to R. You can further assume that S has enough liquidity in each of its local channels to send up to 3 sats. Also assume the ...
CommunityBot
- 1
4
votes
0
answers
40
views
How do I negotiate the opening of a larger than 16777215 sats channel on a Core Lightning node?
Core Lightning's describes a maximum amount that can be given as a parameter to lightning-cli fundchannel:
The value cannot be less than the dust
limit, currently set to 546, nor more than 16777215 ...
- 916
4
votes
0
answers
67
views
How to calculate the hashes in Lightning
I was wondering how I calculate the hashes regarding BOLT03 Specification:
The Revocation Pubkey is calculated like this:
revocationpubkey = revocation_basepoint * SHA256(revocation_basepoint || ...
- 10.4k
4
votes
0
answers
186
views
Sign lightning channel creation PSBT with Golang
I'm trying to open a channel on regtest with LND v0.13.0-beta.rc3 using their PSBT workflow to allow for remote signing.
I've done the following steps:
I create a regtest wallet using the BIP39 ...
- 10.4k
4
votes
1
answer
1k
views
Generate addresses from Trezor's xPub using Python
I am trying to generate BIP32 HD addresses from my Trezors xPub key.
I keep getting errors with most of the libs our there. What am I missing?
pywallet:
from pywallet import wallet
xpub = '...
CommunityBot
- 1
3
votes
0
answers
96
views
How to force close a channel at the original state, for a good cause
A few months ago I created a payment channel from my desktop node, on LND, to my mobile node, on Blixt. Then I tested a few payments between the nodes, and the final balance on the mobile phone is now ...
- 28.5k
3
votes
0
answers
548
views
Lightning Network Nodes do not report Bolt9 Features
Looking at the output of the describeGraph command of my node (LND), I have seen that my node detects approximately 19,000 nodes. Of those 19 thousand, 6 thousand do not report any bolt9 feature.
lnd@...
- 121
3
votes
0
answers
61
views
Stuck low-feerate transaction after forced closed channel
Someone cooperatively closed a channel with me, then forced closed it later. It has not confirmed. In fact, it is not even showing up in mempool, which says "waiting for transaction". I'm ...
- 77.9k
3
votes
1
answer
95
views
How to make sure the user receives lightning payment?
I am working on a side project to allow users to receive some payments from it. When a user clicks a button to withdraw to a lightning address, my webapp makes a request to the host of that lightning ...
CommunityBot
- 1
3
votes
1
answer
275
views
How to avoid a force closure of a channel in the future
On May 14th our channel with LNBIG-42 was force closed and has only returned to the wallet minus some fees a few days ago.
https://mempool.space/tx/...
CommunityBot
- 1
3
votes
0
answers
126
views
What is the difference between singlesig and multisig xpubs?
When exporting the xpub from my SeedSigner, I'm asked whether to export the "singlesig xpub" or "multisig xpub." I understand the use cases for each but from a technical standpoint,...
- 77.9k
3
votes
0
answers
250
views
What does the tlsextraip setting do in LND?
The lnd.conf documentation says:
; Adds an extra ip to the generated certificate. Setting multiple tlsextraip= entries is allowed.
; (old tls files must be deleted if changed)
; tlsextraip=
I think ...
- 792
3
votes
0
answers
173
views
Lightning Network snapshot via lncli describegraph only includes about half the network?
I pulled a snapshot of the Lightning Network via lncli describegraph with my Umbrel node in July 2022.
Everything worked fine and I analyzed the snapshot:
~18k nodes
~85k channels
~4k BTC total ...
- 1,565
3
votes
0
answers
51
views
Calculation of different Pubkeys in Lightning according to BOLT03
Lightning uses different Pubkeys to gain more privacy and security, I am not sure how they are calculated. In BOLT03 it says:
The corresponding private keys can be similarly derived, if the basepoint ...
- 77.9k