Questions tagged [network]
This tag should be used for questions related to the Bitcoin network and communication between different nodes on the Internet.
378
questions
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Reversing network hashpower
I'm reading this article by Vitalik Buterin on Problems in Cryptocurrency and don't quite understand what this means:
Ideally, after some number of blocks (perhaps logarithmic in the total size of ...
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1answer
25 views
Number of bitcoind peers drops precipitously every 30 days or so
I run bitcoind headless on a linux box with maxconnections=256 and port 8333 open on the router. Using Bitcoin Node Manager I monitor node status occasionally. Peer count of course starts at 8 and ...
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1answer
28 views
Script_sig for coinbase transaction afbff1130b6fcbdceebbadfc48a842af1f03ee08a79e042b37fc467518b49a0f
I am currently developing a blockchain parser in Python, and it has been crashing in the file blk00006.dat for the coinbase transaction with the hash ...
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1answer
22 views
Does support HD wallets multi networks?
Due to bip 44 list
https://github.com/satoshilabs/slips/blob/master/slip-0044.md
HD wallets support multi coins.
does it mean HD wallets support multi networks? like omni for bitcoin, TRc20 for ...
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1answer
26 views
How do I ask other nodes for their stale blocks?
I want data on as many stale blocks as possible. Is there a way to ask peer nodes to run "getchaintips" and get their results?
Previously, I used Blockchain.info's API call for this, but it seems ...
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21 views
Why is my Bitcoin transaction not confirming today? [duplicate]
Please don't tell me that this also has something to do with this stupid Corona virus. First, it slashes the Bitcoin value in (less than) half. Then I can't order any groceries and have to sit here ...
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0answers
29 views
Find out dynamic IP address by querying bitcoin core
I'd like to use a dashboard page like Bitcoin Node Manager with Bitcoin Core. The summary page lists the IP address of the node, as obtained using bitcoin-cli getnetworkinfo. Bitcoin Core only seems ...
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1answer
22 views
Change port 8333 to other. (Running multiple docker instances)
My question is:
can I change port 8333 on the network connection to any other port (8334 f.e.) without making my node "blind" to the other peers in the network? Will it still sync/push transaction ...
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18 views
What exactly does the “score” field mean and how does work? when I execute the RPC command “getnetworkinfo”
I saw a similar question (this) but I think that the answer doesn't clarify me what the field meaning and how works (it's calculated?, how?).
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35 views
How to tell if my node is online (conflicting information)
I am really confused. I am attempting to set up a listening node. When I look at bitnodes.earn.com it shows my node as offline when searching by IP, but when I run getconnectioncount it returns a ...
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1answer
36 views
How to Construct a Ping Message
I am struggling greatly trying to figure out how to send a basic "PING" message, and receive back a "PONG" response.
import random
import hashlib
import socket
PEER_IP = "35.187.200.6"
PEER_PORT = ...
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22 views
How long does it take to crawl and map the bitcoin network?
There are several websites that have data on the number of nodes in the network. For instance coin.dance. About how long does it take to map the entire bitcoin network?
4
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1answer
51 views
Discovering Bitcoin network topology
For a research I am doing I would love to have a graph with the network of reachable Bitcoin nodes. Active reachable nodes can be extracted by using getaddr messages (e.g. bitnodes project). However ...
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1answer
27 views
What would the effect of a very long bear market be on the Bitcoin economy?
I don't mean to be a doomsday prophet or spread FUD, but I need to know if Bitcoin (or any PoW coin) investors should be concerned about the following scenario:
Assume Bitcoin goes in a very long ...
2
votes
1answer
2k views
Bitcoin protocol and Wireshark
I captured bitcoin protocol communication in real-time and it is present in fig1 and fig2.
Fig1
In red box, there are many types of command.
First Question:
How can Wireshark detect bitcoin ...
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0answers
51 views
Types of onion address
I'm running a bitcoin core full node with Tor and I've configured a hidden service for that.
The point is: bitcoin core log shows me an onion address which is very smaller than the one I found in /var/...
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vote
1answer
54 views
difference between inbound and outbound connection
I'm running a bitcoin full node (bitcoin core) via Tor.
I noticed I have only outbound connections (using maxconnections=16 in the conf file), but not even an inbound one.
So which is exactly the ...
3
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3answers
213 views
Can we shutdown the Bitcoin blockchain?
I maybe wrong but what I think is the blockchain ledger exists as long as there are active nodes in the network. So can the Bitcoin blockchain be shutdown by shutting down power supply across the ...
6
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1answer
175 views
What is the oldest Bitcoin Core Client that can in theory sync to the chain tip?
I've seen this question regarding the original Satoshi Client being able to sync to the chain tip. The main issues why it doesn't work were:
Change in protocol messages
IRC Node discovery is now ...
2
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1answer
24 views
Double Spend Behavior on First Network Propagation
Supposing there is a double spend, call the transactions T1 and T2. If someone propagated both transactions within a short space of time to the network, of course only one of them can make it into the ...
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34 views
No addresses returned by getnodeaddresses RPC call
The issue
I am attempting to use the getnodeaddresses RPC call to return all addresses known by a node in a docker network. I'm using the regtest environment. The RPC call returns an empty array ...
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1answer
20 views
Bitcoin network resources requirement
Supposing we are alone, could it be possible to run the whole bitcoin network and full capacity of it (maximum transaction per second by different peer) on a low end computer, and how can someone ...
3
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1answer
74 views
How does the Bitcoin p2p network work? Does it need port forwarding?
But does every peer node in the bitcoin p2p network need to have ports forwarded in order to participate? Otherwise, how does the p2p network work in the Bitcoin network?
I heard that there are some ...
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0answers
29 views
Why not connect to all (huge amount of) nodes?
If you mine, a good network propagation time is important in case of mining-forks. I read that bitcoin only connects to 8 nodes. I would connect to many nodes as I can support to minimize my block ...
2
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1answer
103 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 ...
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1answer
241 views
Can't connect to Bitcoin RPC on DigitalOcean server
I am running bitcoind on a DigitalOcean droplet with public IP address e.g. 1.1.1.1.
I would like to connect to it via RPC from another DigitalOcean droplet with public IP address e.g. 2.2.2.2.
Both ...
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1answer
40 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 ...
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1answer
23 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 "...
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0answers
33 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,...
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0answers
25 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 ...
2
votes
1answer
93 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
101 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 ...
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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 ...
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1answer
162 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 ...
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2answers
67 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 ...
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0answers
53 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.
...
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1answer
47 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 ...
6
votes
1answer
148 views
What is the Big-O for LN bandwidth? Can anyone answer this or provide a link to a spec that is sufficient enough for us to calculate it?
When I worked at Google, if someone wanted to deploy a network application they would need to provide a document to the SREs detailing the behaviour of the application at scale in terms of Big-O. Does ...
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163 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:
...
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0answers
41 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 ...
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1answer
98 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.
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0answers
30 views
How the process “ lock a certain amount of coins into the network as their stake” achieved technically in the Proof of stake algorithm [closed]
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 ...
4
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1answer
96 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 ...
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1answer
184 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 ...
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1answer
55 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
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1answer
124 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 ...
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2answers
56 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
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2answers
141 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 ...
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0answers
49 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 ...
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1answer
34 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 ...
