Questions tagged [network]
This tag should be used for questions related to the Bitcoin network and communication between different nodes on the Internet.
343
questions
2
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1answer
69 views
Networking & Lightning Network
So I have a question regarding network connectivity within LN nodes.
Scenario #1:
I have public lightning network node. it has real public IP address (let's say 123.123.123.123), which one is ...
0
votes
1answer
19 views
A question about transaction broadcasting and block creation
Let's say we have transaction X and transaction Y. The timestamp of X is chronologically earlier than that of Y. X's spender broadcasts X to the network and the same goes for Y's spender.
Let's say ...
1
vote
1answer
19 views
A question about Proof-of-Work(PoW)
I will describe my question using an example.
Let's say the network is working on adding block #100 to the blockchain. An attacker recreates block #99 with a combination of transactions that are "...
1
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0answers
24 views
Does finding neighbors in Bitcoin consider locality and hop count?
When the list of neighbors is being gathered by a new nodes in the network, does it consider the distance between the nodes to find closest possible, or it just takes some random nodes? In other words,...
1
vote
0answers
22 views
How often does a node connect to a random node?
I'm trying to understand the likelihood that a node would connect to a sybil attacker, and the critical piece to this that I don't understand is: how often does a bitcoin node connect to a random node ...
1
vote
1answer
34 views
How can I start bitcoind without blockchain synchronization?
Suppose I make a locked wallet with 50000 pre-generated addresses.
As long as I researched, only way I can collect those 50000 addresses using RPC and "getnewaddress". Feel free to correct me.
I ...
3
votes
1answer
82 views
What are the potential security issues when running a Lightning Node on my home network?
If I was to run a lightning node on my home network (and for example, not running the node through TOR), what should I worry about?
Furthermore, what OS, settings and software should I use to ...
0
votes
0answers
26 views
About the balance of specific address
I have a question about how to figure out balance of specific address in the Bitcoin.
There are many node in the blockchain(total # of nodes are 10000 based on 01/16/2019). but some nodes may have ...
1
vote
1answer
31 views
A more updated address clustering method?
say i have a transaction details of one address from blockchain info. is there a more updated heuristics for address clustering ? i.e. if a transaction has 2 output which address belongs to a ...
0
votes
2answers
53 views
What would happen if you tried to follow two Bitcoin blockchains from the same computer?
This will probably sound stupid but what would happen if you create an entirely new Bitcoin block chain and run it on the same computer. How does a node know which version of the Bitcoin block chain ...
1
vote
0answers
29 views
Can't inititate network handshake with my full node
I am running a custom Python script to initiate network handshakes with other nodes. While testing the code I decided to initiate an handshake with my own node but I am getting a timeout error.
...
0
votes
1answer
38 views
Can a Bitcoin node create an outgoing connection to a inbound node?
I'm trying to figure out if we can create an outgoing connection to a inbound node (a node which we are already connected to, but the remote peer has initiated the connection). I know that this does ...
0
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0answers
54 views
How to dissect or decode a BTC transaction?
I used a packet capture to capture the transaction of bitcoin, and I got the following:
...
0
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0answers
33 views
Do SPV nodes sync “headers-first”?
Headers-first sync is defined somewhat by BIP 130 and expanded upon with compact block relay in BIP 152. I believe this is the commit in which it was added to Bitcoin Core.
The result is that Bitcoin ...
1
vote
1answer
47 views
Is there a way for me observe network traffic of bitcoin exchange?
I was wondering if there is a way to observe a network traffic/packet of bitcoin exchange. I want to know what's in the packet when I send a bitcoin from one wallet to another.
Thanks.
2
votes
0answers
28 views
How the process “ lock a certain amount of coins into the network as their stake” achieved technically in the Proof of stake algorithm
i am trying to understand deeper the proof of stake algorithm. i think i understand the basics but i am struggling to understand how this achieved thoroughly under blockchain network and how the nodes ...
2
votes
1answer
55 views
Malicious full nodes causing denial of service attacks
To control >51% of the mining power in bitcoin is impractical due to the immense investment that will be required. Also, The Bitcoin Core client has DoS protection against malicious nodes forwarding a ...
0
votes
1answer
116 views
Send coins from bitcoind full node to lnd without fee?
I'm trying to fund my LND node, for that I put some dust on my BTC wallet address and now I want to send to my LND wallet address but when I try to send with fees "paytxfee": 0.00000000 returns an ...
0
votes
1answer
50 views
What happens when invoices get paid more than once?
Until today I thought, that lightning invoices can only be paid once. Where do the funds go when an invoice is paid more than once? Will every payment reach the destination node or can reusage be ...
0
votes
1answer
55 views
Unable to find peers when connecting through tor proxy
I have tor running as a service on my computer and start bitcoind with -proxy=127.0.0.1:9050 but it fails to find any seeds through DNS or anything during startup, and even after leaving it on for ...
0
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0answers
44 views
Bitcoin neighbours with getaddr type message
lately I'm dedicating myself to programming my Bitcoin client for academic purposes, and I was analyzing protocol specifications, with particular attention to the system of exchange of known network ...
0
votes
2answers
42 views
Does a Node connect to all the peers?
Does a Node connect to all the peers in the network? Or just a few?
If its just a few, how many?
If its just a few, what about if all of those nodes in the list are malicious?
3
votes
2answers
134 views
How to confirm how many peers a node has?
When a node requests one of it's neighbours for a list of it's peers, that node responds with a list of all of it's neighbours. I'm just wondering is there a way to confirm that those nodes are ...
1
vote
0answers
45 views
Creating a tunneling (wormhole) service for bitcoin wallets
Zcash recently announced a new wallet and service to connect mobile devices to a node running on a private home network using a tunneling service they are calling "wormhole" (1). Basically it is ...
0
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0answers
19 views
Creating a bitcoin simulation
I want to create a bitcoin simulation where I can simulate information propagation similar to that of the real bitcoin network.
I would then like to change how information propagation works in this ...
0
votes
1answer
31 views
Requesting a node's peers list
When joining the bitcoin network, you request a list of peers that a node has so that you are able to connect to those peers if you wanted to, in order to be better connected. Is there any way that ...
1
vote
3answers
57 views
When joining the bitcoin network, why aren't we connected to the most geographically closest nodes?
Is this a safety/security reason or is it just convenience?
0
votes
1answer
35 views
Is there a way to distinguish miner nodes from other nodes?
In the bitcoin network, there are many different types of nodes. One of these types are miners and in the bitcoin network, is there any way to distinguish a miner node from a non-mining node? I'm ...
1
vote
1answer
43 views
Lightning Network: Is it creating 3 transactions instead of 2?
I'm watching this Lightning Network presentation by the original authors. At 9 minutes in, he notes that all the network sees will be a transaction to the multisig address and then a transaction to ...
4
votes
2answers
531 views
How are transactions propagated through the bitcoin network? (In-depth)
I know the general gossip protocol that occurs i.e transactions are sent to neighboring nodes who then send it to their peers etc. but I was trying to find a more in-depth answer on how transactions ...
1
vote
1answer
76 views
Any privacy considerations regarding allowing inbound connections for a Tor full node?
I wanted to know if there's any privacy considerations to take into account when opening the bitcoin ports on the router for a bitcoin node.
I'm using -onlynet=onion in the bitcoin.conf file and I ...
0
votes
2answers
20 views
Is it possible to accurately map hashing power to network size?
Let's say we have a network with n nodes in it. Is it possible, when the hashing power of the network is calculated after a proof-of-work, to accurately estimate n with an algorithm taking the ...
0
votes
1answer
57 views
Blockchain endpoint working
I wanna clear this thing that how blocks are retrieved and created in from the nodes using an end point. The end point is basically centralized and have nothing to do with network if i'm not wrong. Is ...
1
vote
2answers
91 views
Transaction Relay and trickling in Bitcoin
If a node has 100 connections to other nodes and receives a new transaction using a getData request, it sends an inv message to it's 100 connecting peers correct?
Does it also send the inv message to ...
1
vote
1answer
58 views
Possible better peer-to-peer protocols for Bitcoin?
As we know, bitcoin uses flooding in order to propagate blocks and transactions across all the nodes in the network. As it was launched in 2009, it's been almost 10 years since it's launch and I was ...
1
vote
2answers
36 views
Would bitcoin core work on a big endian system? Or even a system where C++'s `int` is not 32-bit?
Looking at the source code of bitcoin core, the serialization part, I see that there's no serialization abstraction layer that accounts for a possible different endianness or different binary layouts ...
2
votes
0answers
51 views
How to get multiple connections to the same node
I'm playing around with connecting my node to another one of my nodes to see how many incoming connections I can handle.
Whenever I add node A from node B with bitcoin-cli addnode 1.1.1.1 add after ...
1
vote
2answers
73 views
Networking in cryptocurrency
I am learning and trying to implement my own cryptocurrency and I am thinking about how could I achieve the peer to peer connections.
I read that bitcoin is using DNS seeds for discovering users.
In ...
0
votes
1answer
55 views
Is it true that only one message can be sent at a time in Bitcoin Core?
I looked into Bitcoin Core client code, and it seems that there is a lock that allows only one thread to send data (Block, TX, etc.) at a given time point. If this is true, it means that transactions ...
7
votes
1answer
265 views
Improvements that could be made to how bitcoin propagates its transactions and blocks?
As of 2018 what are the known improvements that could be made to how bitcoin propagates its transactions and blocks?
0
votes
1answer
57 views
Is Bitcoin network an overlay application network?
Is Bitcoin network constructed with just Layers 1-4 of the OSI model? Or it's an overlay application network?
Can someone please explain about structure of Bitcoin network?
Thank you
-2
votes
2answers
148 views
Possibility of detecting MAC address spoofing in Bitcoin network?
The paper that has been published here: https://dl.acm.org/citation.cfm?id=3282283 proposes a consensus algorithm based on distributed voting process in which it claims that it would be possible to ...
3
votes
2answers
143 views
How do block explorers determine propagation through nodes/P2P protocol?
On several Bitcoin blockchain explorers, I have seen unconfirmed transactions given a dedicated "propagation" value that tells a user how much of the Bitcoin network has become aware of this ...
0
votes
1answer
55 views
how do bitcoin nodes know about the full network
partitions sometimes occur in a distributed network; when this happens, a node can only communicate to a subset of other nodes in the network and may use a different chain as the main chain; since ...
2
votes
1answer
31 views
When an IP address in *new* table is overwritten?
I'm reading the address management of Bitcoin core implementation. There is one thing I couldn't understand is in which condition an IP address in the new table of a node is overwritten?
In ...
2
votes
2answers
193 views
How do mining pools connect to the Bitcoin network and miners connect to pool?
I couldn't find the answer anywhere so I start a thread.
How do mining pools connect to the Bitcoin network to propagate transactions and blocks? Do they run their own full node? If yes, how many of ...
0
votes
1answer
321 views
What is the network topology used at the physical layer of the Bitcoin network?
I want to know about the performance of the Bitcoin Network under various network topology and for which it performs the best. Also what is the current topology being used?
3
votes
1answer
41 views
How is bitcoind “shy” when exchanging `version` packets?
This is more of a technical/programming question.
I am referring to this line of code: https://github.com/bitcoin/bitcoin/blob/be992701b018f256db6d64786624be4cb60d8975/src/net_processing.cpp#L1699
...
3
votes
1answer
206 views
addnode in bitcoin.conf doesn't work (Regtest mode)
I'm trying to make to nodes on the same computer communicate.
I set up two bitcoin folder with two bitcoin.conf files.
bitcoin.conf in the second node is the following:
rpcuser=bitcoinrpc
...
1
vote
1answer
45 views
How a web-service like bitnode.earn can know each node's blockchain height?
How a web-service like bitnode.earn can know each node's blockchain height?
We can get some information of each node in bitcoin network in this web-site:
https://bitnodes.earn.com/nodes/
And, it is ...
