Questions tagged [lightning-network]

Proposed payment system leveraging payment channels which allow re-negotiation of balances that finally get executed on the Bitcoin blockchain.

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1answer
27 views

Is there already a way for subscription models? (Preferred over lightning)

Has anyone heard of a project that tries (or was successful) to make reliable subscription models possible? I mean a use case where the vendor can rely on his costumer and does not have to worry that ...
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How can AMP invoices be static in Lightning?

I have heard that there are static AMP invoices that can be reused multiple times (at least in LND). But previously I understood that you should never reuse the same paymenthash, because you could ...
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Difference between capacity and max_htlc in Lightning Network?

What is the difference between capacity and max_htlc in the routing of payments in the network?
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30 views

How would PTLC's change invoices?

I am wondering how would switching from HTLCs to PTLCs change invoices? I assume there would not be a payment-hash anymore, but what would replace it. A payment-point? Also, is there already support ...
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Is it possible to run a full node lightning network bitcoin core 22.0 on a 32 bit computer?

I have an old pc with Atom N270 that I would like to use as full node, how can I do that?
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40 views

Miner attack lightning network

Can miners attack lightning network making it unusable with the hope that the transaction are forced to be processed on-chain, and they earn more transaction fee?
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Watchtower limitations and possible solutions so far in 2021-Nov?

Having read a bit more about the Lightning network. The capacity of the lightning network seems to ride on the "trust" of the counterparty you are opening a channel with along with the ...
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Does eltoo require trusting watchtowers not to close channels?

The way Lightning Network works now, watchtowers maintain a list of penalty transactions to broadcast in case one party attempts to close a channel with an outdated channel state. The watchtower ...
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1answer
45 views

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

I understand that a watchtower service for the Bitcoin lightning network requires fees to do their job. How much is this fee to justify a 24/7 server uptime cost? Can one use the bitcoin lightning ...
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35 views

What are some of the pitfalls and limitations of Bitcoin Lightning Network Watchtowers?

From my general understanding watchtowers, just watches the bitcoin lightning channels and makes sure no one is submitting a old payment channel transactions. What are some of the pitfalls and ...
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108 views

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

I'm still learning about Bitcoin lightning and learned about watchtowers. What are they doing exactly for the network and its users?
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1answer
62 views

Estimating Lightning Network's theoretical transaction throughput

I've seen theoretical estimates of Lightning Network's potential transaction throughput range from 100k or more to millions of transactions per second. My question is, how do you come up with an ...
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Lightning Network node collusion

I' m learning about Bitcoin and LN enjoying Antonopoulos's excellent "Mastering Bitcoin" book I stumbled upon Figure#7 in Chapter 12 https://github.com/bitcoinbook/bitcoinbook/blob/develop/...
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Could the Lightning Network encounter any problems as a result of Taproot activating?

I was reading this excellent write up from Laolu Osuntokun on how the light client protocol Neutrino encountered a Taproot related issue on testnet. (Taproot is already active on testnet.) Could the ...
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54 views

Why is lnd's channel.db so huge and when will it stop growing

I am running my lnd node since about 60 days. Looking at the file channel.db, I found it grows currently about 500M per day: btc@xxx:~/.lnd$ ls -al ./data/graph/mainnet/channel.db -rw------- 1 btc btc ...
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36 views

Lightning circular rebalance never succeeds

I've tried using lnd, lnd-rebalance, Ride the Lightning, and Thunderhub. I've tried raising fees to a silly amount, and rebalances as low as 50k sats. I am participating in a number of triangle swaps, ...
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1answer
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How can someone broadcast intermediate lightning transaction? Where the network fees come from?

Let's assume Alice and Bob creates a channel in which Alice locks her 100 mBTC. Alice 100mBTC and Bob 0 mBTC --------> 2-of-2 contract Alice Pays Bob 30mBTC through this channel: Alice ...
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1answer
25 views

Is it possible to run a Lightning Network node with multiple entities holding parts of the private key?

What's the technical limitation stopping multiple entities from collectively managing an LN node? I understand all parties (entities that share the Node private key) need to be online to sign routing/...
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61 views

Where are my lightning routing fees stored (lnd), when do they get payed out?

I watch my lightning node (lnd) routing some amounts. And with lncli feereport I see some sums, let's say 700 sats for this week. But where are those sats? How can I lookup the accumulated routing ...
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35 views

Transferring all funds from a custodial service over Lightning Network

This is the third time (meaning three different services) something like this has happened to me: A custodial service holds a small amount of my bitcoin. When I want to withdraw all funds to my own ...
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39 views

No routes found for LN triangle swap

I just joined this swap with my lightning node, but we are unable to do a circular rebalance. Austronode was able to rebalance 500k sats to my channel, but they weren't routed through btcishope, which ...
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1answer
82 views

Negative fees on Lightning network and fees on incoming liquidity

Why there aren't negative fees on lightning network protocol and the ability to set incoming fees? Would there be any benefit? Let me describe the situation. There are nodes where the most of the ...
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1answer
55 views

lnd stoped routing - unable to update fee rate

I used to have about 5 routings per day. Now, since three days I don't have any routing. In my lnd.log I find lines like this: grep ERR lnd.log 2021-09-19 22:40:53.187 [ERR] HSWC: ChannelLink(700510:...
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What are the various Bitcoin nodes available which I can connect to via my lightning node

I am thinking of running my own lightning node in testnet. Going through the tutorials it seems the lightning node needs to be connected to bitcoin node inorder to get connected to bitcoin network. ...
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What is difference between Lightning Wallet and Lightning Node?

I am confused with the terminology of lightning node vs and wallet, as I see that each individual can run its own wallet like eclair so does that mean the person running a wallet is also running a ...
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1answer
62 views

Specifying delivery addresses on channel closes - includes force closes?

In https://github.com/lnbook/lnbook/blob/develop/07_payment_channels.asciidoc We see this block of text: Typically the addresses used in this cooperative close transaction are generated freshly for ...
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Creating a lightning invoice without running a full node

I'm trying to build a small website that takes payments using a lightning invoice. I want to do this without running a full node (or pruned node if possible) on my server to keep costs down. I'd be ...
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lightning nodes cannot find route

I have two lightning nodes, Bob and Charlie (using bitcoind backend with LND). They both have an open and funded channel with this testnet faucet: https://faucet.lightning.community/ Both nodes have a ...
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63 views

How can I increase the routing my 'small' lighting node performs?

I know this question has been asked a lot. However I am not able to grasp the correct approach to address this. Let me give you the context: I spun up an LND node to start experimenting and ...
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184 views

Why are multi hop virtual payment channels desirable?

There are papers about multi hop virtual payment channels emerging like the Perun paper or more recently the Donner Paper. The idea seems to be to reserve some liquidity on a path (or potentially flow)...
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What is the BOLT 10 realm byte for testnet and signet DNS node discovery?

BOLT 10 describes a node discovery mechanism based on DNS. The query semantics include a realm byte that is 0 by default (Bitcoin). What is the realm byte for testnet and signet? This question was ...
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Is it possible to programmatically or preemptively deny any/all open_channel Lightning messages coming into your node?

If so, that would make it possible for that same node to have 1 very well funded inbound channel with only 1 other node that they also own and price gouge fees to route payment to them through this ...
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Bitcoin transactions associated with layer 2 projects

Is there any website which tracks the number of Bitcoin transactions, fees and amounts associated with layer 2 projects (Lightning Network, Liquid, Rootstock)? I am curious about this because if a ...
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Should you be able to run a mainnet c-lightning node in parallel with a signet c-lightning node? What about an alternative Lightning implementation?

Running mainnet, testnet and signet Bitcoin Core full nodes on the same machine/same VM works fine. Is running say a c-lightning mainnet node in parallel with a c-lightning signet node on the same ...
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What exactly are route hints?

In the documentation for LND's addInvoice rpc call there's a field for something called route_hints which are described as: Route hints that can each be individually used to assist in reaching the ...
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Lightning On Chain Wallet - How do I get my Bitcoin back out

I've setup a Lightning Network Node. Funded the wallet. Played with channels and sent a few payments back and forth with a mobile wallet. I recorded all the pass phrases when I make the Lightning ...
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307 views

Force Closing a BTC lightning channel on Umbrel

I requested to close a lightning channel on my Umbrel node. Sometimes this is a quick process. And other times it takes days. It's been like 2 days now that a lightning channel with peer "...
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121 views

Fund umbrel lighting wallet with Blue Wallet?

Just set up umbrel node. How does one fund the lightning wallet? Besides funding the Bitcoin Core wallet and sending to the lightning wallet. I added Blue Wallet and tried to send from there to my own ...
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48 views

What speaks against dropping the percentage fee in lightning?

If the goal of the lightning network is to route payments as cheap as possible (i know this is an assumption and maybe not everyone agrees), why wouldn't it be a good idea to just drop the percentage ...
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Keys Security Best practices in a Lightning company

"What are some key security practices for running a company that works on Lightning? Risk of someone running away with the funds Alternatives to multi-sig for lightning Resources in the space ...
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1answer
62 views

Is it possible to use the Lighning network without being a middleman/intermediary for others?

A basic question: A wants to send money to C, but there is no channel between them. But A is connected to B and B is connected to C. So A sends money through B to C. But what is necessary to (not) ...
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121 views

How will censorship affect the lightning network?

If the Bitcoin lightning network were to become widely used, what will prevent regulators from cutting people off? The lightning network provides participants with the topography for the purpose of ...
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74 views

Pruned Bitcoind Backend for LND with txindex enabled for version > v0.13.0

I'm looking to prune a bitcoind node that will be used by LND. https://github.com/lightningnetwork/lnd/commit/410b30b9caaf59a78a29d8b924e14395b7daa59d From the LND commit recently by Kixunil. Note ...
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58 views

how many htlcs can a lightning channel have pending at a given time

Channels can have pending HTLCs, or even handle multiple payments concurrently. Is there a max number of pending HTLCs a channel can entertain? What is that max, why is it set to that number, and what ...
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94 views

Would a min_fee setting for Lightning channels make sense?

What is a min_fee? Having a min_fee means changing the fee calculation to max(min_fee, fee_rate * amt), potentially replacing the base_fee. My reasoning behind this is that it prevents 0-fee payments –...
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107 views

What are the minimum and maximum lengths of a Lightning invoice (address)?

I've noticed Lightning invoices can be 263 characters, 247 characters, and possibly other lengths. Is there a set range, and how (generally) are these numbers derived ? related: What are the minimum ...
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49 views

Pay invoice to offline lightning node

I wonder if there is a way to force a refund. Let's say A makes a payment to B. Later, B finds that he has to refund A, but A is offline. Can B reverse this payment while A is offline? Could it be a ...
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53 views

Is is possible to get routing detail of a payment in c-lightning?

I want to know how my payment was routed, how many hops, nodes and fees etc. So I can prepare my channels better. I see in the listpays, it contains info like bolt11, destination, payment_hash, but ...
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Digital hard cap boundaries

In terms of the bitcoin code, I believe I well understand the asymptotic 21 million hard cap on the upper limit of the protocol. I have heard rumors that it is possible to transfer less than one ...
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Would restricting channels to a maximum make LN more decentralized?

Currently LN seems a bit centralized - few central, well funded nodes seem to route transactions and make profits. I was wondering if limiting the number of channels a node can open to a certain max ...

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