Questions tagged [nodes]
Questions concerned with (full) nodes, i.e. relay points in the Bitcoin network.
257
questions
3
votes
1answer
28 views
What bitcoin core options can be changed without a restart?
I often experiment with new bitcoin core options (like zmq, debug and fee options) and I would like to avoid restarting my node for them to take effect.
If I am not mistaken, changing the RPC password,...
0
votes
0answers
18 views
nodes are run to get rewards or just to help bitcoin [duplicate]
I wanted to make a share of my help in bitcoin validation. my question is do Running A Full Node to validate transactions pays reward back or not so I can also benefits from my help to the community
0
votes
1answer
37 views
how does bitcoin's 6 confirmation really help?
I've read the following:
transaction is “confirmed” once it is buried 6 blocks into the
blockchain. This is taken to be a sufficient proof of work such that
reversing 6 blocks to double spend coins ...
0
votes
3answers
48 views
How exactly does “CoinDance” determine the current number of public Bitcoin nodes?
On this URL: https://coin.dance/nodes
It says how many public Bitcoin nodes are currently active in the world, and how many Bitcoin Core ones.
While it's good that I can grab these numbers from that ...
0
votes
1answer
29 views
Lightning Node hardware
Will I, or anybody have more capabilities with a Lightning Node, that is CPU or GPU Powered?
For instances a more powerful computer vs Raspberry Pi’s
1
vote
2answers
42 views
Can you run a full Bitcoin node on Node.js?
Are there bitcoin full node implementations running on Node.js?
Node.js is the server side language that I'm most familiar with so I was wondering if I can run a full bitcoin node on Node.js?
I just ...
0
votes
1answer
24 views
Why was the BIP33 (“Stratized Nodes”) never implemented?
What are the technical reasons that BIP33 was never implemented ?
0
votes
2answers
39 views
bitcoin node take transactions fee and validate them [closed]
a bitcoin node check transactions and validate them . does it take transaction s fee. when validate transactions how much bitcoin transaction fees for a node.and possible reduce fees in a bitcoin node
0
votes
1answer
30 views
Can you help me tell if my new out-of-the-box ssd for a Pi4 myNode project is DOA?
Trying to setup a node on a Pi4 with ssd and blockchain appeared to be downloading well. My router said I was gobbling data for 2hrs. Then I received the "Looking for Drive" message. I rebooted once, ...
1
vote
1answer
27 views
Why do I have to update my node version if I am up to date?
So a few months ago I unplugged my bitcoin node when it was running perfectly. So when I connected it again this week I had to let it sync to the blockchain again. Now you can see it's synced but I ...
0
votes
0answers
27 views
Does it possible to connect to remote node with RPC API?
Does it possible to connect to remote node with RPC API?
I want to get address balances of massive addresses but I don't want to hold my own node because its size.
How can i connect to remote node ...
1
vote
1answer
56 views
What kind of bug does bitcoin core possess that have to be replicated
In order to build a bitcoin client accepted by the current bitcoin nodes we to have to emulate the C++ code present in the bitcoin core client, with all its attributes even the bugs.
For example the ...
1
vote
0answers
22 views
How could be useful the softforks field that provides the RPC command getblockchaininfo?
When I execute the command getblockchaininfo I see useful information but I don't understand how to be useful the information that is displayed through field softforks, the example below:
bitcoin-cli ...
0
votes
1answer
41 views
How do bitcoin nodes agree who first mined ablock?
Once transactions are broadcast and a node starts working on a proof of work, and finds it, it broadcasts it to all other nodes for that block to be verified and added onto their blockchain. All nodes ...
1
vote
1answer
48 views
How can you trust Bitcoin nodes?
If you send send a transaction request to a node, what is to to ensure that node doesn't simply log your private key and do nothing?
What is to stop the entry node from taking a transaction intended ...
4
votes
2answers
123 views
Why do two different fully synced Bitcoin Core nodes differ in the blockchain size?
The size_on_disk printed when executing getblockchaininfo is 1.2 GB smaller than other nodes are reporting at the same time/block.
txindex=1
What could it be??
I've asked to other peers on twitter ...
0
votes
0answers
21 views
Noob question, how do nodes know about other nodes [duplicate]
I'm new to the p2p tech and I would like to figure out how it is working. How a new node knows ip addresses of other nodes, if there is no server? Writing classic software we usually hardcode a server ...
0
votes
1answer
96 views
Error while syncing with the blockchain on my Raspberry Pi
So I already have the node set up on my raspberry pi. This night the transfer of the Blockchain from my laptop to the raspi's hard disk finished. Now I am waiting for the blocks to match the headers
"...
0
votes
1answer
174 views
How To get Address Public Key from Account XPUB?
I am little bit confused or not able to get the right Address Node Public key from Account XPUB.
What i have Done :
1==> Get the Account XPUB [78Bytes]
2==> SHA-256
3==> SHA-256 Again
4==> ...
0
votes
1answer
26 views
How to determine the peer/node that created a transaction?
You're running your node and you receive a transaction from a peer, how do you determine if that peer created the transaction or if it is simply relaying the transaction. In other words, can you map ...
2
votes
1answer
35 views
Transaction propagation criteria vs mempool inclusion cirteria
Do Bitcoin nodes propagate every transaction or only transactions that meet certain criteria? For instance, a transaction with a fee of 0 won't necessarily get included into a block and it might even ...
2
votes
1answer
39 views
How to add a second user with SSH access to my Ubuntu PC running Bitcoin Core?
I have a friend who is interested in learning Bitcoin CLI, and I told him I would look into giving him access to my node - in a non-destructive way - perhaps testnet only ?
Totally trust this person, ...
1
vote
1answer
27 views
Do local nodes work across crypto types?
Newbie to all of this, hoping you can help with what is probably a "duh" question. I'll keep it brief, though: if I download the blockchain using the instructions given for the Bitcoin GUI, will I be ...
3
votes
3answers
226 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 ...
2
votes
1answer
120 views
Is it possible to share blockchain data between multiple nodes?
I'm planning to create a Raspberry Pi Cluster in order to run several bitcoin nodes. Can I share parts of the ~/.bitcoin/ folder in order to not have to store the entire hundreds of GB for each of the ...
0
votes
2answers
135 views
How can I run a light (SPV) node on Linux?
I tried to sync the blockchain and, though I have ample free disk space (>500 GB on my computer, the chain is ~265) I've been having a hard time. So, how can I use an SPV node to send transactions and/...
0
votes
1answer
44 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 ...
0
votes
0answers
34 views
How do lightweight nodes and SPV wallets calculate balances?
Can they do it? Or they "talk" to a full node for that purpose and are used only for mining purposes?
Thanks in advance for your answers.
0
votes
1answer
18 views
My bitcoint-qt client is crashing due to insufficient file descriptors repeatedly even after I set the ulimits to 65535
What are the exact resource requirements for a bitcoin-qt client.
this is important and hard to find information.
In virtualization world those things need to be understood. :)
I am running a KDE 18....
0
votes
0answers
22 views
Where can I find a detailed network protocol spec? [duplicate]
I have been trying for a while to understand how the bitcoin network works, which I (kind of) do on a high level. However, all of the sources I read don't go into the details of the protocol that ...
0
votes
0answers
52 views
Running two nodes on the same network
Running multiple Bitcoin nodes on same network
That post discussed it, but I need a little more help than that. I am not totally sure what to do with the config file and the add node.
Where can I ...
2
votes
1answer
1k views
Bitcoind Node crashes after using -dbcache option
I've been trying to speed up my node sync by increasing the dbcache. However my node tends to crash overnight. My system is running ubuntu 18.04, 4GM of ram bitcoin core v0.18.
I've tried bitcoind -...
2
votes
1answer
62 views
How to prevent specific method calls to bitcoin node
I have setup a bitcoin node and can access RPC methods via curl or bitcoin-cli.
Now I don't want to share the node with multiple parties and in such case, I want to restict some functions from being ...
1
vote
2answers
79 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 ...
0
votes
1answer
66 views
Can I connect to a node as read-only?
In my Electrum wallet I can open the Network Window and view Nodes I'm connected to. Here's an example: electrum4101870.fullhealth.net. I can also find public nodes at https://bitnodes.earn.com/nodes/...
2
votes
2answers
738 views
What is a txn? How can it be invalid?
I read this in a IRC exchange:
verifies your txns against a random node that you don't control. if for some reason that node went rogue, you might have accepted an invalid txn
What is a txn?
2
votes
1answer
173 views
Why isn’t connecting to your own local node a common feature for Bitcoin clients?
I come from the Monero community and connecting to my own local node running on my home PC is very simple whether it’s on the GUI, CLI or a mobile wallet.
Why does Bitcoin not have the ability to do ...
3
votes
1answer
68 views
How many nodes is too many?
Has anyone done the math on this?
For example, if we had 10’s of millions of nodes all connecting to 8 peers would there be some latency issues in propagating blocks across the network in the 10 ...
0
votes
1answer
61 views
bitcoin full nodes vs simplified payment verification
Why do individual nodes run "full nodes" that keep track of the entire blockchain whereas mechants can get away with "lite node" that implements "simplified payment verification" needing to examine ...
3
votes
2answers
2k views
Unable to bind any endpoint for RPC server
I recently updated my bitcoin docker image to bitcoing v0.18.0 version and can't allow external rpc connections to it now. It binds to localhost if I set rpcallowip=X.X.X.X, then I tried to used ...
0
votes
2answers
70 views
How is pool hashrate share name known?
Since it’s not possible to know mining pools nodes addresses, how do we know the that a specific node owing 15% of share belongs to btc.com for example ?
0
votes
1answer
23 views
Is it possible to get the full list of synced nodes ɪᴘ on the network?
There are many website like https://bitnodes.earn.com/ but I’m failing to understand if they collect nodes from compulsory submission on the web interface for statistics purposes only or they use a ...
0
votes
0answers
40 views
Is 10K full nodes enough to bitcoin to avoid 51% attack?
As I know bitcoin has about 10K full nodes. And the question is in my mind is that: This number is not huge! If someone has 6K servers, Can control the bitcoin via 51% attack?
I was thinking if ...
0
votes
1answer
35 views
Bitcoin-Qt [11690]
I found this on my mac computer what is the meaning of this can you pls hep me to understand I am new to this;
Process: Bitcoin-Qt [11690]
Path: /Applications/Bitcoin-...
0
votes
1answer
57 views
Can't connect to bitcoin lightning node
Am trying to connect to https://1ml.com/node/02671251b5678771514df8f26cc01508606d697ae8cad38063f84becbd359b189f
From eclair app https://imgur.com/gallery/GoAMpjp it keeps saying failed to open ...
1
vote
0answers
79 views
Wallet error ErrorFile=… /testnet3/wallets/db.log
I want to use two deamon for sync mainnet and testnet.
I Run $ bitcoind for mainnet without problem
After I run $ bitcoind -testnet But I get this error
BerkeleyEnvironment::Open: LogDir=/home/...
1
vote
1answer
297 views
Bitcoind doesn't start
Im trying to make Stadicus guide work for both Bitcoin Core & LND
I did download the blockchain and moved to the HDD on my Rasp3
However, when starting the bitcoind service, im having this debug....
0
votes
2answers
68 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?
1
vote
0answers
20 views
Blockchain, correction of blocks
How do a malicious nodes correct their blockchain if they have it wrong?
If they don’t want to fix it, what happens then?
0
votes
1answer
67 views
Private Blockchains: Validation
I'm a software developer, and I have some questions about private blockchains, I'd like to have technical answers since I'm trying to understand blockchain at a code level. I'm going to write a ...
