Questions tagged [nodes]
Questions concerned with (full) nodes, i.e. relay points in the Bitcoin network.
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Setting up lndk and need lnd to use http/2
Does anyone know how to get an lnd node to use http/2? I didn't see any parameters to use in the lnd conf file.
Basically lndk is returning this for me.
2024-09-11T20:52:09.129688888-04:00 WARN hyper::...
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How can you make the most basic version of BTC Nodes/Peer to Peer communication?
I started to work on my version of blockchain, and for that, I read how everything works, and everything made sense. But when I got to Nodes/CConnman/CNode, after reading for a week, I understood most ...
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Is a pruned node useful for the Bitcoin network?
Hello
What is the difference between full node and pruned node?
I prefer to be a pruned node due to the speed of the internet and free hard disk space.
Is pruned node useful or worthless?
How much ...
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DEFAULT_MAX_PEER_CONNECTIONS for Bitcoin Core is 125 or 130?
DEFAULT_MAX_PEER_CONNECTIONS is set to 125 by default in core to the best of my knowledge. However, I read in The Optech Newsletter #310 that it is 130... could not validate this info anywhere in the ...
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Sparrow to Remote Bitcoin Core 403 issue
Sparrow v1.9.1
Bitcoin Core v27.0
When trying to connect remotely from Sparrow to my remote Bitcoin Core node, I am getting:
Could not connect:
Server returned HTTP response code: 403 for URL: http://...
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Are wallet addresses associated with a node?
I run a full node but I am relatively new (tech-wise).
I am aware that multiple wallet addresses can be created per node.
Can all wallet addresses on the node be seen (from the outside) as being ...
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Geographic distribution of Bitcoin users
I haven't found recent question about this subject. I wanted to know if there was a site or a database with the geographic distribution of Bitcoin users freely available ? I know that there are ...
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How feasible is a double spend attack?
Each source of information I look at that tackles this problem states that this type of fraud is essentially impossible at best and highly infeasible at worst. By my (very limited) understanding, the ...
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How to create and sign a segwit transaction using any npm pacakge
So I am using this NPM package ( https://www.npmjs.com/package/bitcore-lib )
to create and sign a Bitcoin legacy transaction locally and it was working fine for legacy.
But when I tried to do the same ...
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If multiple nodes start at different points, so do we need to sync the nodes so that they are operating at the same time
From Can multiple candidate blocks be mined concurrently by the miner, even if at the end only one block gets added to the chain every 10 mins?
Time sync between nodes:
If multiple nodes start at ...
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Testing new releases privately on selected nodes?
I think the main vulnerability of Bitcoin is a new release messing things up in a way that it will completely destroy people's faith in the protocol.
By this I mean something like what happened in ...
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Incoming connections
how can I isolate my node from all type of incoming connections and interaction with the bitcoin network?
I need to make heavy querys in my own node and I need all my hardware recources for me. Thanks....
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How can an external party be sure that node's response is valid?
Assume that 51% of nodes are honest and 49% malicious. Fur sure, longest chain would make the chains consistent/same all over the world as 51% can outweigh the 49%, but my question is slightly ...
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What are the risks of running a pre-SegWit node (0.12.1)?
Many in the anti-spam faction have contemplated running a pre-SegWit node. But they're told that it is an insecure downgrade and a detrimental idea. So,
Is it safe to assume that Bitcoin is not soft-...
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Intermittent connection issues - 'DataStream::read(): end of data: unspecified iostream_category error'
2 nodes run by me locally sometime connect sometime not and getting 'Connection refused' error on the node I am connecting from.
On the node I am connecting to debug.log error message display the ...
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How I can install Bitcoin Core Light Node (not Full Node) on a CentOs server?
How I can install Bitcoin Core Light Node (not Full Node) on a CentOs server? That I can use it with bitcoind and bitcoind-cli and RPC (https://en.bitcoin.it/wiki/Original_Bitcoin_client/...
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Is running a bitcoin node harmful to the local network?
I am running a raspberry pi 4 with umbrelOS and I have the bitcoin node running on it, however I was told to shut it down. However, the person who told me to shut it down-I'm afraid they don't know ...
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Why do nodes have a maximum peer count?
Why do nodes have a maximum peer count, in other words what could go wrong if each node is connected to all the nodes of the network?
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Shouldn't nodes get reward by protecting the protocol?
I can assume that every currency is basically consists of two major components:
The protocol
The history of every coin
In Bitcoin the history is protected against modification by miners hash power ...
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What is the most successful method to automate circular rebalancing?
What is the most successful method to automate circular rebalancing?
We have tried the Torq and the LNDG app but so far they both do not wotk for us so we are still performing manual circular ...
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Is there a way to download blocks from scratch without downloading block headers first?
I would like to know if there's a way to download a blockchain without knowing block headers. This could be achieved by asking NEXT_BLOCK_HASH from the genesis block. But is this even possible ?
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Who pays the fees for a node payment? [duplicate]
Is it true that the recipient has to pay the fees of a node payment upfront or the transaction won't go through?
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How to update Bitcoin Core if compiled from source?
I compiled Bitcoin Core from source following instructions. I then installed it and that all went well, but now I've realised, I have no idea how to update it when the time comes! (this is all on ...
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What's the fastest websocket bitcoin provider to access mempool data?
I'm looking for a free or paid (reasonably) way to access the bitcoin mempool data by subscribing to the mempool. I'd like to get info in real-time, or anyway in the fastest way possible. Can anyone ...
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How does node discovery and miner discovery work?
I am wondering how nodes discover other nodes and miners, basically, who to broadcast received transactions and blocks to. I'm assuming that when a new node or miner wants to be discovered, it ...
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New resync after a complete reindex
After an error with LevelDB (corrupted) I did a reindex and after that bitcoind automatically start a new synchronization. This seems much faster some times, it started from genesis and in 1 hour it ...
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How many lightweight nodes vs full nodes are there on the network?
I'm curious, how many lightweight nodes are there on the network? Is this easy to tell?
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Who determines a hard fork [duplicate]
I'm trying to really get a deep understanding of the roles miners and nodes play in enforcing the Bitcoin rules.
If a hard fork is presented, who determines if the fork is accepted, nodes or miners? I ...
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DoS attack and MAX_BLOCKS_IN_TRANSIT_PER_PEER
I was reading Mastering Bitcoin and I found, in the section Exchanging "Inventory", this:
"The node keeps track of how many blocks are "in transit" per peer connection, ...
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If my node is connected to 7 nodes and 4 of those say that a block they transmitted to me is valid will i mark it as valid?
Let's say I am a node and I am connected to 7 other nodes.
4 of those nodes transmit me a tx or a block and say it's valid.
(I am aware they do not explicitly send a message saying that something they ...
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Incoming and Outgoing Node Connections
Should I be concerned that I only see "Out" connections, and not "In" connections? What does this mean? Is everything fine, or is there something I'm doing wrong?
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Maximum cpu verification time
Do we know the maximum cpu verification time (or max cpu cycles) required by a tx that fills an entire block?
I get that the game theory of tx fees mitigates this, and that the answer will depend ...
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What does an un-upgraded node see when new Taproot transactions are on chain?
Nodes that don’t know about Taproot need to be able to validate the blocks with Taproot transactions. Marking them as valid spends is the only option for not forking the network.
Yet, if the ...
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Can I connect my LND to someone else's bitcoin node?
Now I am running my own Bitcoin full node on my local machine and connect to it with LND.
I see some open bitcoin nodes on https://bitnodes.io and wonder if it's ok to connect my LND not to my own ...
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Are all wallets always considered nodes?
Likely a duh question, but are all network participants (or wallet holders here) always considered nodes? Am I right to say that the answer might depend on what the wallet is capable of doing in terms ...
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Trusting only the proof of work to receive payments
I understand that a pruned node needs to download all the blockchain in order to verify the blocks and construct the UTXO set.
But wouldn't be possible to download the headers only?
Let's say if the ...
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The competitive practicality of Bitcoin
Bitcoin is to be trustless by the thousands of nodes, but is this no more trustless than the Federal Reserve system? An account size in 8b on each device is a feasible alternative with absolute ...
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Could a government or company run thousands of unique nodes?
Let’s say you’re a tech giant or control a tech giant.
So you have access to money, computers & thousands of unique ip addresses.
Could these giants spin up so many unique nodes that they could ...
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When The Unlocking Script Is Created, Who Verifies The Script?
I am familiar with the many ways an unlocking script is created. But in this scenario, lets use P2PKH. When we generate the unlocking script (excuse the simplicity):
<dup> <hash160> <...
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Additional instructions in TX
Would it be possibile to add additional information in TX?
I would like to add time of transaction in it.
Would hash of TX change if hostile node would change that time ?
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Mining stale low-difficulty blocks as a DoS attack
A DoS attack vector against a bitcoin node I haven't really seen mentioned anywhere is mining a stale chain in a low-difficulty era (say right after the genesis block), ideally with a lot of expensive ...
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Can miners single handedly perform 51 attack toward the network?
Is this true that miners alone cannot do 51 attack even one or a group of miners posses >51% of hashrate of the network?
As far as I know, every block should be accepted by nodes to be added to the ...
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Do wallet companies send user's transactions to their own "central" bitcoin nodes?
Do external wallets companies such as muun, bluewallet, or greenwallet send user's TXs to some "centralized" data center where they own some nodes to broadcast the TX to the blockchain?
If ...
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How and when do nodes stop broadcasting a transaction?
Suppose a node begins broadcasting a signed transaction.
Question 1. At what stage is the signature verified? In §5 of the whitepaper, verification only appears during block acceptance after mining. ...
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The nmap script bitcoin-getaddr often does not return a response
For a project I need to write a scraper that sends a GetAddr request to all Bitcoin nodes. I determine the reachable nodes using the bitnodes.io API. Then I go through all the IPs and send a request ...
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I am running Bitcoin core, how can I tell if my node is a 'full' validating node or a 'listening' node?
I understand there is a difference between the two. But how can I tell?
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It only takes 20,000 computers to alter the Bitcoin blockchain?
Google says
As of now, there are roughly 12,130 public nodes running on the Bitcoin network.
So in a nearby small city, there are 70,000 people. If 1 household is assumed to have 3 people on average,...
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What does "Network Unroutable" means?
I just started running bitcoin core on a dedicated laptop. I wanted to see if my node is connected to my Wasabi wallet so I sent some sats from Strike. In the peers list Wasabi shows up but under ...
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blockchain nodes that dont get the new block
i read somewhere that after 40 second of creating a new block in the blockchain there's still 5% of the nodes that does not have the block, what happens to them if they were offline or down at that ...
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Not able to create private V3 onion service
I'm trying to secure my onion service running on my VPS node. I followed the steps of the official tor guide and this guide. Everything works fine UNTIL I get to the point where I have to modify the ...
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