Questions tagged [network]
This tag should be used for questions related to the Bitcoin network and communication between different nodes on the Internet.
412
questions
3
votes
1answer
64 views
If there are a significant number of pruned nodes on the network will it impact network security?
The size of the Bitcoin blockchain is reaching 350 MB and adding more than 60GB per year. I feel verification node centralization a risk if the cost of storage does not drop.
My question 1:
Is using ...
0
votes
0answers
27 views
how do bitcoin nodes detect a transaction?
I have a number of question about bitcoin but I was ask to do specific research on two questions and I figured this would be a good place to start. The first I have answered already the second is: &...
0
votes
1answer
22 views
How bitcoin core bootstraps [in source code] [duplicate]
When the bitcoin core daemon starts first time it does not have the block database. It must be connecting to other nodes over network. But (I am assuming) it needs to know the at least one live node/...
3
votes
1answer
74 views
Are there any downsides to banning node crawlers?
There are multiple entities and open-source software that crawl the Bitcoin P2P network to discover and monitor nodes for various purposes (statistics, surveys, academic papers etc.)
Some of those I ...
1
vote
1answer
34 views
How much info share bitcoin nodes between other nodes?
1.If we assume bitcoin nodes share the other nodes addresses in the end every node know other nodes adresses right?
2.If we share data through network every node share the same information other ...
0
votes
0answers
19 views
TX Validation: Can a miner choose specific tx to validate from mempool? [duplicate]
I have made two TXs few days back and they remain unconfirmed so far.
Can I be a bitcoin miner and validate them myself?
And what happens if it remains as it is?
There are some big amount of utxo ...
0
votes
1answer
34 views
How to understand the first reply of a node
I have send my version message to a bitcoin node and the hexdump of his answer was this:
https://pastebin.com/QBNaeS0g
Maybe this is a network related question but I want to know the version used by ...
0
votes
0answers
13 views
Difference Between vSeed and vFixedSeed
Im curious what the difference is between the vSeeds and the vFixedSeeds. I see how the vSeeds and DNS loaders of IP address and then there is the vFixedSeeds that are generated with python and the ...
1
vote
1answer
66 views
Is there an easy way to estimate the number of mining nodes?
I was curious about the number of mining nodes on the network, yet I haven't seen it discussed.
I tried two different approaches to approximate the count of mining nodes. I looked up the hashrate of ...
2
votes
1answer
378 views
How do network nodes “connect” - amateur level
I have little background in computing, have been studying bitcoin for intellectual stimulation. I have learned a lot and I understand quite a bit regarding the function of nodes, the validations they ...
0
votes
1answer
49 views
What happens if everyone disconnected from the blockchain
What would happen if for some reason, every computer connected to the blockchain was disconnected, and no peer-to-peer connection was established with the blockchain protocol between 2 users.
Would ...
1
vote
1answer
88 views
Is there some kind of USB antenna I can buy to be able to use Bitcoin even when there is no Internet?
Let's say they cut the Internet tomorrow. I will still have my private keys on my offline computer, but I won't be able to sync the blockchain (as won't anyone else) nor would i be able to make any ...
1
vote
0answers
30 views
Trust in bitcoin networking
I am new to the subject, but as I was studying I wasn't able to understand something and I would appreciate if anyone could help me.
I understand that in most aspects bitcoin doesn't rely on trusting ...
0
votes
0answers
26 views
How to configure Bitcoin core running on Whonix to receive inbounds
I'm running a bitcoin full node on Whonix. The problem is I get zero inbound connection (11 outbound). I know I can do port forwarding and open the desired port to receive inbound connections. Now, ...
8
votes
1answer
217 views
With peerblockfilters=1 hundreds of “btcwire 0.5.0/neutrino” connections are downloading TB from my Bitcoin node
I run Bitcoin Core 0.21.0 from a data center, unmetered, with compact block filters enabled (blockfilterindex=1 peerblockfilters=1).
Soon after the restart, I get a huge number (140-200) of ...
0
votes
1answer
52 views
How can I obtain a better understanding of the P2P messages between my full node and its peers?
I am interested in how my full node interacts with its peers, what messages it exchanges (e.g. gossip about other nodes on the network, transactions, blocks) and why my full node disconnects with ...
2
votes
1answer
189 views
Port Forwarding for Bitcoin Core in order to allow incoming connections?
There is a rather good explainer on https://bitcoin.org/en/full-node#port-forwarding on how to do port forwarding for bitcoin core in order to allow incoming connections so as to support the network.
...
0
votes
1answer
42 views
Incorrect Network
I was hoping someone could help with a transaction please.
I sent BTC to my binance account via my ledger. I think I used BTC segwit to send but sent it to the BTC address on binance- I was not aware ...
0
votes
1answer
26 views
Force Inbound Connections to IPV6 only
Is it possible to restrict all connections to an IPV6 address?
I've set
onlynet=ipv6
bind=::
But it seems that nodes are still attempting to connect to an IPV4 address (in addition to the IPV6 ...
0
votes
1answer
37 views
is wallet vulnerable when unlocked for transactions?
is wallet vulnerable when unlocked for transactions?.I recovered a wallet some time ago and all is good.passphrase key all looks good.But a question came to my mind about the moment we make a ...
0
votes
0answers
40 views
How does a Bitcoin node connect to more than 65536 other nodes?
I found on the internet that Bitcoin uses TCP to communicate with other nodes, connecting to them and sending messages. But a computer cannot bind more than 65536 sockets (because of TCP ports), so ...
2
votes
0answers
48 views
How to reliably check if your bitcoin onion node is reachable as advertised?
If getpeerinfo returns a good number of outbound onion peers but none show up as inbound:true, how do you check if your node is properly reachable as advertised?
Several guides and forum answers ...
0
votes
1answer
31 views
unrecognized output wallet when using Electrum to send bitcoin
help me understand this transaction - https://www.blockchain.com/ro/btc/tx/1318a3e54cff78fdd8f6b54e6fe5115072586091788c9bfa08ca82d83e4bc276 .
Never sent bitcoin from hardware / hot wallet before so I ...
1
vote
1answer
38 views
How does initial exchange of inventory work when both nodes have different chains?
When two nodes connect to each other and exchange getblocks messages but they have different blockchains will both nodes download each others blockchain to verify which has higher chainwork or will ...
0
votes
1answer
37 views
How does bitcoin find the block locator hashes in the leveldb database?
I am trying to understand how bitcoin core builds the list of block locator hashes needed for sendheaders and getheaders messages. I have looked on the wiki and I have seen that after the 10 most ...
1
vote
0answers
104 views
Score value of my node is not rising
I'm running Bitcoin Core 0.20.1 in Debian Buster.
I run the daemon behind Tor network.
My current settings are:
/etc/tor/torrc
SOCKSPort 9005
ControlPort 9501
HiddenServiceDir/var/lib/tor/bitcoin-...
1
vote
1answer
31 views
Bitcoin private network on Amazon EC2
I am looking to set up a private network of Bitcoin nodes over multiple machines (e.g, on multiple VMs on Amazon EC2) for experimentation. I want to be able to control how the different nodes are ...
1
vote
0answers
35 views
Was bitcoin peer to peer network affected because of the recent BGP hijack incident?
Can someone ELI5 BGP hijacking, impact on Bitcoin, countermeasures and if there were any issues because of the recent incident?
Related links: https://twitter.com/ProtonMail/status/1311013829514539011
...
0
votes
1answer
60 views
Did the FIBRE protocol reduce the occurrence of chain forks?
I've just learned that Fibre protocol is used for really fast block propagation. My understanding is that if blocks are propagated faster, miners can more quickly continue to work on (what seems to ...
0
votes
0answers
47 views
How to Post Transaction in Bitcoin Network?
I need help here as it has been almost a week since I've been trying to figure this out. Fyi, I can get my Python Script running using "Mainnet" for Bitcoin Transaction that able to execute ...
3
votes
1answer
111 views
How does a full node decide which outbound peers to have?
I understand that a full node can have up to 10 outbound connections (8 full relay peers and 2 block-relay-only peers). I wonder how my full node decides which nodes to connect to for outbound. What ...
1
vote
0answers
80 views
Dragonmint T1, cannot find on network anymore (AngryIP Scanner) + NO SDCARD SLOT
I was using Braiins OS for a while, but couldn't get the voltages to settle down no matter what I did, so I went to Braiins OS website and noticed they would no longer be supporting the DM-T1, so I ...
0
votes
0answers
37 views
Clarfication on “ network synchrounisation” in analyzing bitcoin protocol in a synchronous model
I am reading The Bitcoin Backbone Protocol:Analysis and Applications and i have no previous knowledge on different type of networks . And there is a term in paper " high network synchronicity &...
1
vote
1answer
31 views
getheaders request being ignored by peers [closed]
It seems my 'getheaders' request is being ignored by peers. I've followed the implementation: https://en.bitcoin.it/wiki/Protocol_documentation#getheaders without success.
If I change it to 'getblocks'...
1
vote
0answers
22 views
About polluting the peer table
Is there a well-known method to pollute a specific user's peer table?
Eclipse attack is not available anymore due to the patch after a paper was introduced.
Can you give some keywords?
Thank you!
1
vote
1answer
52 views
What is the Bitcoin network? [duplicate]
This is a beginners question related to bitcoin.
As bitcoin is a system of distributed bitcoin users, and a transaction is being sent to 'all' of them - well, what is that network? What IP adresses? ...
2
votes
1answer
55 views
How are we so sure that the bitcoin network is connected?
I am only beginning to understand the bitcoin's p2p network protocol but so far I know (and correct me if I am wrong) that a new node in the network attempts to connect to a "few" other nodes that ...
1
vote
2answers
44 views
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 ...
1
vote
1answer
71 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 ...
0
votes
1answer
57 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 ...
0
votes
1answer
49 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 ...
0
votes
1answer
33 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 ...
0
votes
0answers
23 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 ...
0
votes
1answer
64 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 ...
0
votes
0answers
54 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 ...
1
vote
1answer
49 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 = ...
0
votes
0answers
26 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
votes
1answer
57 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 ...
0
votes
1answer
38 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 ...
3
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 ...
