Questions tagged [lightning-network]
Proposed payment system leveraging payment channels which allow re-negotiation of balances that finally get executed on the Bitcoin blockchain.
570
questions
-2
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0answers
20 views
What's your opinion on the blocksize debate? [closed]
I've been following Bitcoin for a couple of years now, and have been wondering what the developers opinion in here on the blocksize is currently.
I realize that we will never be able to scale to ...
3
votes
1answer
25 views
Get invoice amount from payment request - LND REST API
I'm using the REST API of my LN node to generate and pay invoices. I would like to know how to get the invoice amount/value in sats from the payment request I receive.
I found this : https://api....
0
votes
1answer
31 views
Do payment channels have an address? And where are their transactions actually being written to?
In the Lighting Network or with micropayment it's possible to open up payment channels that basically work like a smart contract.
At the beginning, the channel is funded by one or two parties with ...
2
votes
1answer
14 views
LN Payment Channels: Can you have more than two nodes in a channel?
I can't seem to find an answer to this but apologies if this exists somewhere already.
From the last paragraph of section 2.0 in the lightning network paper version 0.5.9.2, "Micropayment channels ...
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2answers
28 views
Calculation of max_num_htlcs on Lightning Network
Why max_num_htlcs on lightning network is 483?
I read the BOLT specification, but i can't understand the calculation.
What is the 'maximum standard weight'? Does anyone explain the calculation? Plz ...
0
votes
1answer
25 views
Receiving payment on Lightning Network with LNBig as initial funder?
I was able to open a channel to myself from LNBig and withdrew 100 sats from Reddit's lntipbot. This appeared to be successful!
Output of lncli channelbalance:
{
"balance": "100",
"...
0
votes
2answers
21 views
c-lightning channel announcement/establishment issue
I've been running a c-lightning node over Tor with 2 open channel for a few months and it still hasn't forwarded any payment. Maybe it's normal due to the low amount of liquidity provided by my node, ...
3
votes
1answer
40 views
How to provide a proof-of-payment to an offline Lightning Network vending machine?
I'm considering building a Lightning Network vending machine that is offline but has the capability to create LN invoices and verify payments.
As an example the scheme has:
One offline vending ...
0
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2answers
21 views
Exact syntax for lightning-cli txprepare
I have tried many different forms but I cannot prepare a transaction with lightning-cli txprepare from the Linux prompt.
lightning-cli txprepare [{\"bc1qvzr0mwps952d0cdmchyd2pe5rlee5tfces5dzf\":\"all\...
0
votes
1answer
29 views
Lightning Network LND - Retrieve payment by hash
How do I get an outgoing Payment by paymentHash using LND REST API? I know that GET /v1/payments returns all payments, but I would like to get one in particular, not all as there may be thousands. ...
3
votes
3answers
112 views
Adversarial Question: Why not fork LND Loop and provide the service freely/cheaply?
Adversarial Question: Now that LND Loop is paid product, what stops someone from forking the software and selling the product themselves, or integrating it freely?
The only reason I can think of is ...
1
vote
1answer
55 views
When will my Lightning channel be closed?
I have a force closed channel from lnbig.com and it has been pending in closing state for over 2 weeks (42600+ blocks).
When might it be closed so I can request a new one?
What are the default/...
2
votes
0answers
29 views
How private is Strike by Zap? [closed]
I am asking myself how much information can Strike theoretically collect on its users? Does Lightning have any benefits in this case?
https://medium.com/@JimmyMow/announcing-strike-by-zap-4f578c7c8984
5
votes
2answers
65 views
Can failed Transactions figure out which Channel is exhausted?
According to information in this LND PR the sender of an TemporaryChannelFailure can be determined:
In many cases it is impossible for the sender to determine which of the two nodes in a pair is ...
3
votes
2answers
574 views
What happens with the bitcoin locked in the payment channel if both sides lose the backup?
If none of the sides closes the channel, is the coin locked up forever?
0
votes
1answer
60 views
What is the 'tlv_payload' in lnd route?
When creating a custom route, if you use the queryroutes from lnd it sometimes with tlv_payload set to either True or False. How does the node figure whether to set this flag?
I cant seem to find ...
3
votes
3answers
99 views
how are lightning network payments instant and secure at the same time?
I have a question regarding lightning network. It's a bit of a long question so please bear with me.
If have 1 bitcoin in my wallet and buy an item costing that amount from a shop. I leave the shop ...
2
votes
1answer
33 views
What additional considerations are there for dual-funded payment channels?
Naively, it seems like a dual-funded channel should not be much more complicated than a single funded channel; You'd just have an extra input from Bob and it would be reflected in the balances of the ...
0
votes
1answer
47 views
c-lightning missing outputs
A few days ago I did a submarine swap in order to rebalance a channel of mine. I opted to be refunded on-chain using a brand-new address generated with c-lightning newaddr command. I used the p2sh ...
1
vote
1answer
28 views
Are both CSV and nLocktime unnecessary in Eltoo?
The Eltoo paper says "Notice that we could use nSequence for this purpose, but due to the interplay with OP_CSV we opted to use nLocktime". Now that Lau showed CSV not to be necessary, does that mean ...
2
votes
1answer
32 views
What happens if the commitment tx fee is too low?
How often are commitment tx fees negotiated?
Is it every time a payment is made and a new commitment transaction is formed?
What about if there are no payments but both nodes see that the on chain ...
0
votes
2answers
23 views
How to get the capacity of remote channel in Eclair?
I want to query an Eclair node for properties of a channel which I'm not a party of. Obviously, this information is in the local view of the network graph and is used for routing. However, the API ...
4
votes
2answers
199 views
Lightning Node High Availability/High Throughput
Are there any resources/best practises on running a highly available/high throughput lightning node? If my lightning service where to take off, should I be running multiple lightning nodes or a single ...
4
votes
1answer
312 views
In LN, how could a payer prove to 3rd party that he indeedly made a payment to the payee?
For regular on-chain payments, a txid can prove at least a transferring of value indeedly happened, at a specific time, despite that it may be totally irrelevant. For example, a malicious user can ...
0
votes
1answer
31 views
Lnd - how to open a double-funded channel
I know about lncli openchannel, however this means I will open a (bidirectional) channel with my peer, but initially just my side will have some balance. Let's say I agree with a collegue running ...
2
votes
2answers
72 views
Lightning - why are commitment transactions supposed to use different keys
In the paper BIP32 and deterministic key derivation are mentioned. But why given that two peers directly exchange messages (i.e., there is no need to obscure anything)? Alice always exchanges state ...
0
votes
1answer
18 views
How to obtain your nodeID (QR code) in eclair-mobile?
I want someone to open a direct (no hops between us) channel to me in lightning (she will be the funder, I'll be the fundee). How can I get the QR code of my node in my eclair wallet to show to the ...
1
vote
2answers
69 views
Can someone explain how an HTLC is redeemed?
I'm looking at Bolt 3 in the Lightning rfc. My question is about how a HTLC is redeemed. Example HTLC script for reference:
# To remote node with revocation key
OP_DUP OP_HASH160 <RIPEMD160(SHA256(...
2
votes
1answer
51 views
Eltoo channel - can opening be off-chain
In Eltoo the set-up phase is similar to Lightning. You fund a n-of-n multisig (usually 2-of-2). Of course you don't want to publish this until you have a bail-out possibility - called "settlement ...
2
votes
2answers
121 views
What is the rationale for the Lightning network's path length limit (20 hops)?
A sender in the Lightning network can choose a path with up to 20 intermediaries (BOLT4).
Tor is another network that uses onion routing for anonymity. However, in Tor all paths have 3 intermediaries,...
2
votes
1answer
28 views
Does node order have meaning in a JSON describing the Lightning network graph?
LN clients can export their view of the network as a JSON file. For instance, in a file obtained from LND, a channel (edge) is described by this structure:
{
"channel_id": "555479871492063233",
...
2
votes
1answer
74 views
Lost funds on my lightning node?
I've been using lightning network daemon (LND). In an effort to have a balanced node with somewhat equal amounts on both side of my channels, I've sometimes opened channels with the command lncli ...
0
votes
1answer
52 views
Help signing a P2WSH Multisig
I'm trying to construct a transaction in regtest mode that spends from a P2WSH 2-of-2 multisig.
Here is the funding transaction for 5 btc. It also contains a change output for 5 btc.
...
0
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0answers
36 views
Creating bech32 address on bitcoin core automatically generate another address on lightning network
my lightning network backend is bitcoind. Interesting when I execute getnewaddress label bech32 another bech32 address is automatically generated. I found it because at the lightning network console ...
2
votes
1answer
45 views
“private” agreement between two c-lightning nodes on channel closure fee
When i was at LNConf, one of the devs of c-lightning (IIRC) told me that there is a custom, manual way to agree between two nodes on channel closing fees.
Can anyone elaborate how this is possible? I ...
3
votes
2answers
119 views
Will a channel be automatically closed if there's a expiring HTLC that doesn't have its own output in the commitment transaction?
When routed Lightning payments are smaller than some amount they don't get their own HTLC output in the commitment transaction. Instead the funds reserved to it are directed to transaction fees.
When ...
2
votes
1answer
26 views
How and When are lightning channels disabled?
On the testnet and some mainnet there are channels which are disabled, so if you try to route a payment through them it failed with this as an error message. Reading through the RPC commands, it seems ...
2
votes
1answer
60 views
lightning network bitcoin howto install
Hello fellow bitcoiners,
I would like to install lightning over Bitcoin core - I already have a full node. But every guide I follow ends up with a broken build or some issue preventing to finish the ...
0
votes
1answer
39 views
Bidirectional channel opening in c-lightning
With the current version of c-lightning is it possible to open a bidirectional channel funded by both parties?
I managed to open a channel with fundchannel command, but that seems to be a ...
2
votes
1answer
81 views
How does the 'queryroutes' function in lightning's LND calculate the route fees?
I am testing my own routing implementation and for some weird reason a handful of channels reject my payment stating InsufficientFee.
The scenario is A -c1-> B -c2-> C whereby Node A is ...
0
votes
1answer
26 views
Doubt on lightning channel opening
It's 5 days since I opened my first (and unique, for now) lightning channel.
Unfortunately it seems that only me have funded the channel while the counterparty didn't, so the channel it's actually a ...
2
votes
2answers
167 views
Throughput of Lightning Network
Is there any reliable source of information regarding the estimation of the number of payments that occur in Lightning Network every day? If the total number is impossible to estimate are there any ...
2
votes
1answer
95 views
In Lightning commitment transactions, what do the upper 8 bits of sequence and locktime represent?
In Bolt 3 of the Lightning Network specs, for commitment transactions it states:
locktime: upper 8 bits are 0x20, lower 24 bits are the lower 24 bits of the obscured commitment number.
...
1
vote
2answers
50 views
Could someone provide an example of a tx spending from an input with a relative LockTime?
I want to see an example of a raw transaction which spends from an input which has a relative LockTime applied to it. An example would be a transaction from a Lightning payment channel in which a user ...
3
votes
2answers
101 views
What is the difference between listpeers vs listnodes commands?
In c-lightning implementation, what is the difference between the listpeers and listnodes commands of lightning-cli?
2
votes
1answer
32 views
Would a dual-funded channel be a single UTXO?
Would a dual-funded channel be a single tx? The peers would cooperatively create a single tx with at least 1 input each. Is this correctly understood?
0
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1answer
61 views
How to securely update and verify C-Lightning release?
Recently, a new version (v0.7.3) of C-Lightning was released. The GitHub page has detailed instructions on how to build the software from source, but does not provide much details as to how to update ...
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0answers
41 views
How can I check my transaction signature is correct?
I have tried recreating the exact transaction from "Appendix B: Funding Transaction Test Vectors" from BOLT 3 from the Lightning RFCs. My transaction looks exactly the same when parsed, except my ...
1
vote
1answer
71 views
If a user recovered data directory of LN node software with an old backup, what would happen? Would cooperative channel closing be possible?
As far as I know, the "Data Loss Protection" feature would just request the counterparty to unilaterally close the channel. I wonder if mutual closing is still possible, with old channel states?
By ...
1
vote
1answer
48 views
lightning node data visibility on explorers
I'm trying to set my first c-lightning node with docker-compose using image from https://hub.docker.com/r/elementsproject/lightningd. currently, my node can connect and open channel with other nodes (...
