Questions tagged [nodes]

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

34 questions with no upvoted or accepted answers
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1answer
116 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 ...
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0answers
54 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 ...
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66 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 ...
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0answers
286 views

Nbitcoin node c#

Create a transaction to send money, then it needs to be "registered" in the system, before doing so : using (var node = Node.Connect(Network.Main, node_address))//, node_address { ...
2
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0answers
653 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 ...
2
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0answers
349 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 ...
1
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1answer
70 views

Public Bitcoin Nodes? [No API]

i've been searching for hours now. Also on StackExchange here. Are there any public nodes that i can connect to using jsonrpc? I want to lookup stuff (im not into generating priv keys or anything) but ...
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36 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 ...
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0answers
96 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
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1answer
390 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....
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21 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?
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0answers
45 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, ...
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3answers
1k views

How to run multiple node in same machine?

I have created an altcoin base on litecoin source code. I want to test it in multiple node to test peers of each node weather each node can connect to each other. So I try to run "mycoind" in multiple ...
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0answers
88 views

How can I use raw litecoin protocol to connect to nodes?

I am trying to connect to litecoin nodes using raw protocol. I follow Ken Shirriff instructions from this article . My code works perfect with bitcoin, so I just replaced bitcoin nodes connection ...
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0answers
82 views

Are there drawbacks to running a node on a cloud provider because of the limit of unique nodes connected per-subnet?

I currently have a full node running on Digital Ocean and have come across this old post on bitcoin talk that states that -- Outbound Random Selection -- First the code puts the addresses into a.b.c.*...
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0answers
157 views

How to upgrade my node with bitcoin wallet GUI from 0.11.2 to 0.12.1? Install qt V5.5?

i want update my RaspNode (rPi 2 B+) to the 0.12.1 but i want to use Bitcoin wallet GUI. So, it's necessary to install QT V 5.5... V 0.11.2 use QT 4.8, but 0.12.1 uses QT V 5.5 How to install QT V 5....
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0answers
147 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, ...
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0answers
185 views

Bitcoin.conf connect command

When configuring the bitcoin.conf file, what should you put in connect=? There are IP addresses listed here, so I removed the # sign and left them as is. I also entered my WAN address and my local ...
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48 views

When is a Bitcoin transaction considered as "first version" by a node?

Given what Satoshi once said: The network nodes only accept the first version of a transaction they receive to incorporate into the block they're trying to generate. My question to that: What makes ...
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0answers
26 views

How could a decentralized network limit the amount of nodes to one per user

Proof of Elapsed Time seems like a great idea to me, but in fully decentralized and public networks (like one similar to bitcoin) this would bring problems with it as one could just put up as many ...
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1answer
38 views

Bitcoind information about the input and output

Im trying to get the wallets/accounts the money got sent to. But getrawtransaction does not give any information about the reciever or sender
0
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1answer
26 views

no output on gettxout method [All Blocks Are Counted]

litecoin-cli gettxout "9d56b3bf179a988873fc2162d70bba44849ef822764c9049a0f722b5fdc9acc1" 1 This is the command im using to get information about a transaction. litecoind -txindex=1 -daemon -...
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24 views

Where can I find a high performance search capabilities in a Bitcoin node implementation?

Where can I find a Bitcoin node implementation, which is capable of thousands of searches per minute, without degrading performance of the node? I am aware of two Bitcoin node implementations. ...
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0answers
17 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 ...
0
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1answer
319 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
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1answer
81 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 ...
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51 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.
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101 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 ...
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0answers
43 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 ...
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2answers
138 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?
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0answers
252 views

Bitcoin node generating invalid addresses

I'm running both a bitcoin and a litecoin node, both are generating invalid addresses. My LTC generated address: MV6eGvkbkgcDZLDpK1WQeZLMmx3PHZmXC7 My BTC generated address: ...
0
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1answer
107 views

Where can I get a visual example of the entire bitcoin network starting from physical network to the overlay network

*Note I am not a technical person so excuse any misunderstandings on my part here. I am looking to get a sense of how the entire system looks like as a whole starting from the physical hardware (such ...
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0answers
140 views

bitcoind removed from version 0.12?

I just updated my node to the lastest version 0.12, it launched and synced up fine. Afterwards I closed the core GUI and launched bitcoind through the command line bitcoind -server and it returned ...
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2answers
757 views

Why don't miners act as nodes?

Why didn't bitcoin make miners and nodes one in the same? It seems that the miner computers are not being used at all in for the network. Also their gpu power is not being used for the sake of the ...