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Routing in Bitcoin Lightning Network

Here is all we can find in the Lightning Network whitepaper about payment routing process that it is completely unclear to me (at least it is not enough to know what happens exactly at time of finding ...
Questioner's user avatar
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Why do we need a "routing" process in Lightning Network?

If I am wrong, please correct me. If we simplify Lightning Network, it seems to work similar to this simple unidirectional payment channel between two parties (although, Lightning Network is a ...
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Is routing approach of Bitcoin Lighning Network "decentralized" and "trust-less"?

From the Bitcoin Lightning Network: it is possible to find a path across the network similar to routing packets on the internet. Is routing approach of Bitcoin Lighning Network performed in a "...
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6 votes
1 answer
577 views

Why is last channel's expiry different in Lightning Network Routes?

Both in the Basic of Lightning Technology (BOLT) documents, and in the specification of lnd, there is a different treatment for the last channel in a route. In BOLT#2 it refers to a variable ...
ranchalp's user avatar
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1 answer
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Lightning network routing failure rate

Let's say a lightning node A wants to route a payment to a lightning node B, being A and B not directly connected.A looks for routes throughout the network, using the info about the total capacity of ...
sr_gi's user avatar
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1 vote
1 answer
567 views

Minimum funds required in a channel in Lightning?

I have noticed that, I cannot exhaust the funds in my channel to one side in lnd. I understand this makes sense so as to have some punishment in case of fraud, but I cannot find the reason for the ...
ranchalp's user avatar
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3 votes
2 answers
689 views

Make payments Lightning without Invoice?

The Lightning-RFC defines, in BOLT #11, an invoice protocol for proof-of-payment. While this is a pretty cool feature, I was wondering if it would be possible to make a payment without such invoice. ...
ranchalp's user avatar
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5 votes
2 answers
413 views

Do the channel balances get publicly announced in real-time on Lightning Network?

In Lightning Network, is the balance publicly announced in real-time? On the one hand, it should be public as it is crucial to the routing mechanism. But, in case that the balance might reveal some ...
user1387682's user avatar
4 votes
1 answer
135 views

What is the purpose of the announcement_signatures message as specified by the Lightning Network RFC?

Isn't the channel_announcement message enough for channel advertisement? Why is the announcement_signatures message required? Reference BOLT #7
Samvid's user avatar
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1 answer
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unable to route payment to destination: TemporaryChannelFailure

Keep getting this error following attempting to pay an invoice. root@ubuntu-s-1vcpu-2gb-nyc3-01:~# lncli --network=testnet payinvoice ...
arshbot's user avatar
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1 vote
3 answers
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My lnd node hasn't routed any payments (1 week + since initial setup)

So I finally setup a lightning node (lnd) and according to "feereport" I haven't routed any payments (no fees collected). I have used my node to send payments (yalls, satoshis.place, blockstream...) ...
big_fish_small_pond's user avatar
2 votes
2 answers
136 views

Clarification about lightning network

When I run a lightning node, I have to set up a lightning channel with, for example, a highly connected node. Here a first question: When I set up a lightning channel with a node, have I need to put ...
Bruce Wayne's user avatar
1 vote
2 answers
950 views

How to know earning LN routing fees

I am using c-lightning version:v0.6-182-g1851ebb. Is there a way to know how much I have earned routing fees? I found that lnd has lncli feereport command that shows earned fees. Does c-lightning have ...
ogw_yuya's user avatar
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1 answer
3k views

How does lnd's autopilot feature work?

Autopilot automatically connects to peers in order to establish a p2p network. I didn't find however a complete explanation of its motivation and logic.
ripper234's user avatar
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How does one manage the shifts of Channel Balances in the Lightning Network

I saw the video below that shows the possibility of a shift in Channel Balances. It shows that the amount that one uses to fund a channel may "disappear" if the channel is used as part of a route to ...
Casey Harrils's user avatar
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1 answer
333 views

How does LN solve the liquidity problem?

How do nodes in LN manage to provide 100% collateral to all the outgoing channels? I attached an example below that details my confusion about the lack of liquidity.
Anon's user avatar
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0 answers
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what happens if one node goes down in lightning network multihop payments? [duplicate]

In a scenario where we have the following lightning payment channels: Alice <-> Bob <-> Carol <-> Dave Alice wants to pay Dave. Dave generates a payment request by selecting a random R and ...
skydanc3r's user avatar
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1 answer
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Mapping the Bitcoin Lightning Network: Why not use the Blockchain?

Researching about the available routing algorithms for the Bitcoin Lightning Network, I have been reading the Flare whitepaper, and this idea/question came to mind: Since all payment channels are ...
S34W0LF's user avatar
11 votes
1 answer
1k views

Lightning Route Discovery - How to know capacity in each direction?

So i have a question how routing works in the LN. I read partly through the RFC described in https://github.com/lightningnetwork/lightning-rfc but I have still this open question. I know every node ...
blacktemplar's user avatar
3 votes
1 answer
447 views

Is it possible to design a hardware wallet that can allow operation of a routing Lightning node with the security level of a hardware wallet?

I'm wondering if its possible to design a hardware wallet such that it can be used for a Lightning node that routes payments for their channel partners such that their funds can never be stolen even ...
B T's user avatar
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2 votes
1 answer
627 views

Do relay nodes need to have money in order to relay transactions?

Imagine Alice wants to send 0.5 btc to Bob. They both open channels with Carol, a relay node that has no money. They create single funded channels each of 1 btc. Now Alice updates her channel to be 0....
Luca Matteis's user avatar
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1 answer
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How to prevent lightening network spend two times the balance?

If I choose off-blockchain transaction in Lightning network is it any mechanism to check wether balance covers mount of transaction? So is it, or isn't it possible spend two times the same amount of ...
János's user avatar
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6 votes
2 answers
891 views

In the Lightning Network, what happens if a "middle node" suddenly goes dormant for a long while?

I think I have a general understanding of how the Lightning Network works. However, I was having a little difficulty in understanding what happens when a node in the middle of a "path" suddenly goes ...
crypto_rob's user avatar
4 votes
1 answer
103 views

Same entity controlling separated parts of a a lightning path

Given the lightning path Alice → Bob → Carol → Dave → Emilee (with Alice being the sender and Emilee being the receiver), assume Dave and Bob to be the same entity. By pulling funds from Dave to ...
UTF-8's user avatar
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9 votes
1 answer
641 views

Would it be possible to send money through the Lightning Network to an offline address?

My understanding is that the current Lightning Network spec requires an address receiving money to sign things with its private key - which requires the owner of that key to be online. Are there any ...
B T's user avatar
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5 votes
2 answers
3k views

Is lightning network limited by the 'size' of channels?

Imagine we start with multiple channels which eventually link two individuals, Alice and Rob: (the BTC amounts is the total locked in their multisig address for their channels between each other) ...
Joe's user avatar
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2 votes
3 answers
159 views

Is there some way to add a third party authorizer to (or by) a lightning network transaction?

I'm not asking for "multisig on the lightning network", but I'm more curious about how one would set up shared control over lightning network transactions in general. Imagine we don't have a ...
Nathan Basanese's user avatar
6 votes
1 answer
330 views

Non-bidirection payment channels for lightning network

I am trying to understand the technology behind LN and similar concepts. As I understand it, LN is a network of bidirectional channels, which are created with some limited capacity, within which the ...
Wapac's user avatar
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9 votes
1 answer
192 views

Channels state validation in lightning network?

I looked into docs but didn't find any information, how do client get information about the state of intermediate channels? Since channel transactions are offchain, and only channel participants ...
alex's user avatar
  • 373
8 votes
2 answers
496 views

For lightning network, can I surround myself with a bunch of nodes to increase anonymity?

Let's say I'm on a Lightning Network. Can I create a bunch of nodes, and do all my spending through those nodes? Can you hide the fact that these nodes are likely controlled by the same person? How ...
Christopher King's user avatar
15 votes
3 answers
3k views

Is centralization in the Lightning network inevitable? Why (not)?

Especially keeping in mind the possibility of single-funded channels (see Tadge's Google Doc Slides), buying from an exchange and concurrently opening a payment channel on the Lightning network would ...
Murch's user avatar
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29 votes
3 answers
6k views

How are paths found in Lightning Network?

I understand now how multihop payments can work in LN, but how do we discover payment paths in Lightning Network in the first place? Obviously you'd need to take into account the available capacity ...
Murch's user avatar
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10 votes
1 answer
2k views

How is a node in the middle prohibited from keeping the money in a routed Payment in Lightning network?

It is my understanding that Lightning is to scale with users having only few payment channels by leveraging the six degrees of separation theory to facilitate payment routing. I understand how onion ...
Murch's user avatar
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3 votes
1 answer
558 views

Is Lightning Network vulnerable to sybil attacks?

A dialogue partner of mine claimed that Lightning Network is vulnerable to sybil attacks. He stated that LN needed explicit identities in order to support the "routing" which would cause ending up ...
Murch's user avatar
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