Questions tagged [nodes]

Questions concerned with (full) nodes, i.e. relay points in the Bitcoin network.

Filter by
Sorted by
Tagged with
0
votes
1answer
15 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
17 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
16 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
21 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
18 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 ...
0
votes
1answer
37 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
26 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 ...
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 ...
0
votes
1answer
18 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
459 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
26 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
43 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
29 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 ...
1
vote
2answers
364 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
0answers
25 views

How can I check how many users have upgraded their Bitcoin Core software?

Bitcoin Core has just released their 0.18.0 upgrade. Is it possible to check how many users have upgraded to this version and also how many users are running older versions?
0
votes
2answers
47 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
18 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
32 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
0answers
44 views

How to create a node to a private blockchain using Bitcoin core

Is it possible to create to connect to a private bitcoin chain with bitcoin core? I created a private bitcoin chain through regtest on one vm. Now I want to make a full node copy of it on a separate ...
0
votes
1answer
28 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
48 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
49 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/...
0
votes
1answer
94 views

Rewarding full nodes trough the Lightning Network

Sometimes I think "DASH" has some kind of advantage over Bitcoin because it has some rewards not just for the miners, also for the full nodes. Am I correct? Is not this a strength (a prevention) ...
0
votes
0answers
36 views

Locating Bitcoin mining activity

There is any systematic way to locate Bitcoin mining activity (either block creation or node activity). I stumble upon with Bitnodes code which implements a recursive search using some nodes as "seed",...
0
votes
1answer
102 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
38 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
19 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
0answers
19 views

Private Blockchains: Blocks’ validation

I’m a software developer and I’m trying to understand blockchain at a code level I have the following issue: There’s a private blockchain, this private blockchain does not have any relation to ...
0
votes
1answer
35 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 ...
3
votes
1answer
158 views

Checking whether lightning node is online/visible

I just created my first lightning node and already have one active connection. My problem is however, that I do not see my node in any lightning network explorer. Is it possible to somehow check ...
0
votes
1answer
27 views

What happens to .blk files on disk when the Bitcoin daemon switches to a longer chain?

I’m interested in writing a program that will (1) parse the .blk files that my full-node Bitcoin daemon writes to disk and (2) write them to a relational database in an incremental fashion (i.e., ...
0
votes
2answers
69 views

Is it possible to create a wallet service, which doesn't have all the blockchain downloaded?

Is it possible to create a wallet service, which doesn't have all the blockchain downloaded? Like not running a full node itself?
0
votes
0answers
19 views

SPV node in local machine [duplicate]

I have fullnode in my local machine, I'd like to have SPV node to understand how SPV works with merkle tree. With Bitcoin Core 0.17.1 I can have only full node?
2
votes
1answer
345 views

How is node capacity determined on 1ML.com?

I have set up a Casa node, using lnd, and opened 15 payment channels. The capacity of my channels, after almost 3 weeks, is exactly what it was when I opened the channels, leading me to believe that I ...
0
votes
1answer
80 views

How does bitcoin broadcast information?

On Bitcoin's Blockchain, how is information transmitted instantly to all other nodes and do nodes 'talk to each other' through an API? Do Blockchain nodes communicate with each other through HTTP ...
0
votes
1answer
28 views

How does the Bitcoin network maintain the chains created when two nodes generate different versions of the same block?

I came across these lines from the Bitcoin whitepaper: If two nodes broadcast different versions of the next block simultaneously, some nodes may receive one or the other first. In that case, ...
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
1answer
43 views

Bitcoin full node sharing blockchain

Does anyone know how one might run two bitcoin full nodes on the same machine with both these nodes sharing the same blocks and chainstate files, is a symlink to these files enough or must something ...
1
vote
1answer
48 views

How is the Bitcoin node network different from the IOTA network? [closed]

I asked this question on IOTA's forum here: Real incentives for running a full node? One of the founders from IOTA Come-From-Beyond (Sergey Ivancheglo) responded with this comment: "However, ...
4
votes
1answer
312 views

Why would running a light node riskier and subject to more frauds than a full node? We don't NEED a full ledger, do we?

I've been reading on light node and many have pointed out that the light node doesn't have the full blockchain and is riskier because they can't verify the transactions fully. First, we can verify ...
1
vote
0answers
43 views

Why can't an ISP ban access to a blockchain network? [duplicate]

I read that blockchain sits on top of the internet and is decentralised. We still have to access the blockchain network via an ISP. Without ISP, we can't access the internet so why can't an ISP block ...
3
votes
2answers
142 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 ...
1
vote
1answer
81 views

What percentage of nodes currently support segwit?

What percentage of nodes currently support segwit? It seems Bitnodes could figure this out, but I can't find such a stat on its website.
0
votes
1answer
47 views

How do you download blockchain data (transactions etc.) using a node? Best ways to get a node?

I am just curious how one can download bitcoin data and blockchain using a node. Where should I start?
1
vote
0answers
29 views

How to set up a gateway node?

I have two nodes running in my local machine. one public facing and another connected ONLY to the public facing node. I ensure they are whitelisted and in different ports. the nodes connect just fine, ...
1
vote
1answer
724 views

Can we estimate how many node has the Bitcoin network? [duplicate]

Is it possible to estimate the amount of nodes (hosts) are connected to the Bitcoin network in a given time? Note: Here node means host.
1
vote
0answers
80 views

How do I check if I am running a Dogecoin full node? [closed]

Are there any tools to check if your dogecoin node is reachable?
0
votes
1answer
27 views

How many unit test should be run after building a node?

After building Bitcoin ABC and running make check, I get this: # TOTAL: 1 # PASS: 1 # SKIP: 0 # XFAIL: 0 # FAIL: 0 # XPASS: 0 # ERROR: 0 Is that correct?
0
votes
1answer
53 views

Ardor configuration settings to connect to remote node without downloading entire blockchain locally

What configuration is required to run the Ardor wallet software without downloading the entire blockchain, but only connect to a remote node?
2
votes
1answer
29 views

How does a new node know where to connect to initially? [duplicate]

Is there a default (centralized) set of IPs that a node connects to when it's just starting up for the first time, in order to get the list of other nodes' Ips? What happens if these initial IPs are ...