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

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2
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1answer
16 views

How do I still have connections without forwarding port 8333?

First of all, this isn't a problem I am having, I'm just curious how this works. If you run your node with port 8333 open, you'll receive a large amount of connections after being online for a ...
4
votes
1answer
42 views

Does every full node verify every transaction TWO separate times?

I am building my Bitcoin expertise, and want to verify my understanding on a specific point: at what point(s) do all full nodes verifies a new transaction? Here is my understanding in a nutshell, ...
1
vote
1answer
12 views

Is there a way to get the node's local time when a block was received?

As in, not the miner's timestamp in the blockheader which can be +/- 2 hours, but the receiving node's local time. My concern is the real-world time that elapses between blocks.
1
vote
2answers
48 views

What do pruning nodes contribute to the network?

According to the sourcecode pruning nodes -prune=<n>: Reduce storage requirements by pruning (deleting) old blocks. This mode is incompatible with -txindex and -rescan. I’ve watched that ...
0
votes
0answers
43 views

JSON RPC from external server

I'm having trouble connecting to my node via JSON RPC from an external server. On the same machine, I'm able to pass the commands through bitcoin-cli and also locally I am able to run this PHP file ...
1
vote
1answer
39 views

What's the difference between a 4 core VM running a Bitcoin Node vs. a 16 core VM?

I'm trying to help out the Bitcoin network as efficiently as possible. I have access to VM's, with a $1200 monthly budget. I'm trying to figure out if a single 16 core/ 56gb RAM VM would be better ...
4
votes
1answer
61 views

What's going on with my node traffic?

Any idea why there is a such a distinct staircase pattern that ends with a giant spike of received data? Normally the network graph looks random:
2
votes
1answer
123 views

How do I configure Bitcoin Core to connect always to a particular node?

By reading https://bitcoin.org/en/full-node I've decided that I want to run a FULL node (let's call it 'X'), to contribute to the P2P network. So, I'll leave its ports open, or have a DMZ zone with a ...
2
votes
1answer
125 views

'The node is not in a connected state' error when trying to execute OP_RETURN transaction with NBitcoin

This is my first time trying out the NBitcoin library to create a transaction. I am trying to create an OP_RETURN transaction, but every time I try to execute the Version Handshake with the node I get ...
3
votes
1answer
64 views

Monitor bitcoind node traffic?

I was wondering how I would go about measuring the traffic being used on my network for the bitcoind node I am running. It's running on the standard 8333 port, using linux as the OS. I was looking ...
3
votes
1answer
50 views

Can transaction validation really be free?

If you don't validate a transaction, then you are at risk for relying on it, propagating it, or including it in a block you're mining. For this reason, the default behavior is to validate every ...
2
votes
2answers
110 views

Wouldn't bitcoin benefit from distributing partial blockchains over each node?

Why doesn't each node store only a portion of the blockchain? For example, if you had 100 nodes, each node would store 10% of the blockchain. This would amount to significant overlap of each aspect ...
2
votes
1answer
55 views

Do transactions happen globally synchronized?

Since Bitcoin validates transactions by the majority of peers, and stacks ALL transaction history chain to some kind of hash, is then the following statement true? Only one transaction can happen ...
3
votes
1answer
107 views

What is the protection against a malicious node with a bad block chain?

How does a bitcoin node protects against connecting to a node with a forged block chain? How does it say: "Ok, I just got this block chain and it is a valid/legit one" ?
2
votes
1answer
130 views

Is there a way to find how many nodes are there?

As a single bitcoind node I can only detect how many connected peers I have. Is there a way to have a vision of the whole bitcoin network?
1
vote
1answer
57 views

How can one figure out what version of Bitcoin-Core is used most?

Where can one find statistics on how many nodes are running older Bitcoin Core versions or alternative clients?
2
votes
1answer
24 views

Metrics Correlated to “Health” of Bitcoin Node and Network

What metrics can I use as indicators of the health of (a) a full bitcoin node I am running and (b) the bitcoin network as a whole. Some examples I've considered: recency of last block I received on ...
1
vote
0answers
104 views

How to use bitcoind with CUDA-ready box?

I am not asking for mining (which is all the information I could find on the net). I am asking for the regular bitcoind daemon, looking for having a full node with a reasonable high performance per ...
2
votes
1answer
145 views

Total amount of nodes and avarage active peer number

I have 2 questions: Does anyone know where to find a reliable source for finding out a total amount of active bitcoin nodes? How many peers does each active node have in avarage? Is there a limit to ...
2
votes
1answer
119 views

no IPv6 peers connecting to my node

getnetworkinfo says IPv6 is working on my node: { "name" : "ipv6", "limited" : false, "reachable" : true, "proxy" : "127.0.0.1:9050" } Yet why don't I get any IPv6 peers connecting to my node? ...
1
vote
1answer
136 views

Where can I find a list of reliable nodes?

I know about https://en.bitcoin.it/wiki/Fallback_Nodes but this list does not look very reliable or even up-to-date. There is any other place that I can find a better list?
0
votes
0answers
63 views

Write your own node to send simple messages to network

I've been trying to do a simple bitcoin node in PHP, what sends simple messages to another nodes (like "getaddr"), and gets response from it. Currently best "base" to start with is this (github), but ...
0
votes
1answer
156 views

How do I identify my IP address on bitnodes?

I have supposedly successfully setup a node using the Bitcoin core, but when I go to bitnodes to remotely see if the node is communicating with the network, bitnodes says i am unreachable. Bitcoin ...
0
votes
0answers
56 views

Is there a site that list out all nodes of all crypto coins?

I would like to find out how many live nodes are there for all crypto coins. Its basically an aggregate of all coins with the number of live nodes each one has. Currently have have to goto individual ...
3
votes
1answer
111 views

How do I use Bitnode API?

I just started running a full node and was wondering how to use these commands to verify my node: https://getaddr.bitnodes.io/api/ Specifically, what command line or IDE do I need to type these ...
0
votes
1answer
52 views

What is the different between full-index client to full node?

I've read in "Mastering bitcoin" that a wallet can construct a transaction even if offline but is full-index client, I know full node is a client which holds the complete blockchain data. is there a ...
4
votes
1answer
522 views

Historical number of full nodes in Bitcoin

Is there anybody keeping historical data regarding the number of full nodes on the Bitcoin network? There is : https://getaddr.bitnodes.io/dashboard/?days=90 but it only shows data up to 90 days. ...
0
votes
0answers
13 views

How Does Bit Coin Discovery Work? [duplicate]

According to the original paper on Bit Coin transactions are broadcast to a number of nodes as are Proofs of work. My question is if Bit Coin is decentralized how are transactions and proofs of work ...
1
vote
0answers
49 views

Node Discovery Issue

On my node's https://getaddr.bitnodes.io/ page, clicking the "Check Node" button on the bottom of the page reports that the node associated with this IP address is up; however, at the top of the page, ...
5
votes
4answers
1k views

Are people incentivized with BTC to run nodes?

Bitnodes shows everyone running nodes. Are these people incentivized to run nodes? If not, why not? If so, do node operators make some BTC from transaction fees, etc.?
1
vote
1answer
64 views

Is it possible for a person's transaction to show up on the network BEFORE mine if I send bitcoins before him?

To clarify, if person A sends bitcoins to person B, and person C sends bitcoins to person D, 1 second (or less), AFTER person A, can person C's transaction show up on the network BEFORE person A's? If ...
1
vote
1answer
85 views

Pseudo-Node and putative attack vectors on the network

Pseudo-Node is discussed here on Reddit's /r/Bitcoin Essentially it functions to relay calls from connected nodes in a random fashion. This was an experiment into how easily can full nodes be ...
1
vote
2answers
152 views

Bitcoin nodes voting

I'm just watching Adam Back & Gregory Maxwell: Blockstream and Sidechains interview, and wondering how the decision of further Bitcoin core development are made. I know about Bitcoin Foundation, ...
1
vote
1answer
154 views

miner_proxy and minerd Settings

I've started a mining account of Wemineltc.com, and have decided to go down the track of CPU mining. I looked up the relative tutorials on how to do so, and I got some different results. I set the ...
1
vote
1answer
266 views

How to Enable Port Forwarding for Litecoin Mining?

I've just started Litecoin mining, and I've realized that my blockchain takes eons to download, even though its only less than 4GB. I've read several other posts on the same problem, but none of them ...
1
vote
2answers
117 views

Can I independently verify the integrity of the network with only block headers?

Section 7 of the official Bitcoin paper "Reclaiming Disk Space" explains that only block headers are needed to verify transactions. Essentially by making sure that the transaction has been buried ...
5
votes
1answer
257 views

What is the “misbehaving” log message?

I was looking my bitcoind log and I saw this message: Misbehaving: 91.230.200.131:8333 (90 -> 100) BAN THRESHOLD EXCEEDED In which cases this message is shown and why? It just a curiosity.
2
votes
1answer
169 views

What is a hallmark node in NXT (nxtcoin)?

What is the purpose of a hallmark node for NXT?
2
votes
2answers
356 views

bitcoind hub-nodes

Why is this page blank? http://blockchain.info/hub-nodes Where can I get a list of reliable peers and look at what fees they charge?
4
votes
1answer
161 views

Why is my new altcoin trying to connect to peers and sees almost 200k blocks remaining?

I downloaded and forked the Blackcoin source code. I changed all of the references to BlackCoin, changed the pszTimestamp string along with the current Unix timestamp. Then, I successfully mined the ...
0
votes
2answers
399 views

How to connect nodes globally?

I am running two altcoin clients on different network, connected by VPN. The addnode command works fine, and nodes connects. But what to do if I want others to connect to my network? The ip addresses ...
4
votes
1answer
389 views

Running multiple BTC nodes on separate VMs on the same host machine?

I've got a server running 24/7 with lots of resources left. I want to run a full Bitcoin node, but actually, I thought of running a few virtual machines on it (using virtualbox) and running a full ...
5
votes
2answers
330 views

How to make bitcoind connect to more nodes?

Let's say I have a dedicated server just for my bitcoind and for better reliability and some security reasons I want it to be connected to a much bigger number of nodes than it is willing to do by ...
3
votes
1answer
81 views

If I connect to a specific DogeCoin Node, is it possible to determine the transactions that originate at that node?

I would like to know if it is possible to determine what transactions are originating at a specific node, assuming that I am connected to only that node. This post applies to Bitcoin and DogeCoin as ...
1
vote
1answer
33 views

Does a bitcoin pool appear as one node or multiple nodes to the rest of the network? [duplicate]

I'm guessing that it appears as a single node? For example on http://getaddr.bitnodes.io/?
13
votes
2answers
5k views

What are the minimal system to run a full Bitcoin node?

I want to build a low profile system running as a full Bitcoin node, i.e. just running Bitcoin Core 0.9+ and pretty much nothing else. What is the minimal system (in terms of power consumption) that ...
4
votes
1answer
290 views

Does getaddr.bitnodes.io find all Bitcoin nodes or only one node per mining pool?

Any ideas for finding the number of Bitcoin nodes vs the number of Bitcoin pools? Thank you!
0
votes
2answers
52 views

What piece of code would allow me to check if a block has been found then run an operation?

I am relatively new to C++ and I was wondering if anybody could help me out. I am looking piece of code that will loop until a block is found by a node and then when one is found print a simple output ...
1
vote
1answer
321 views

p2pool inbound connections

I am trying to get inbound connections on my p2pool instance. I currently have 6 outbound connections and the pool is working fine, but I would like to have more connections (might help get a few less ...
2
votes
2answers
218 views

What node implementations and mining pools relay and process 'non-standard' scripts?

Which Bitcoin node implementations, if any, currently relay valid transactions that use so-called 'non-standard' scripts? What proportion of the network is made up of these implementations? What ...