Questions tagged [nodes]

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

32 questions with no upvoted or accepted answers
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1answer
55 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 ...
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0answers
59 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
207 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 { ...
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0answers
615 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
326 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 ...
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0answers
69 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
246 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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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?
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0answers
37 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
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3answers
710 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
80 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
81 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 ...
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0answers
156 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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132 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
174 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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1answer
24 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, ...
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0answers
19 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 ...
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0answers
12 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
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1answer
62 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
94 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
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1answer
40 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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25 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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42 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
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2answers
67 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 ...
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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
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1answer
189 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) ...
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2answers
96 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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2answers
93 views

Is there an efficient way to get the last 200 blocks (BTC, LTC, ETH)?

I am looking for an efficient way of getting the last 200 blocks and being able to pull all transactions related to an address. I would like to do this for BTC, ETH, and LTC. Is there any way to ...
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0answers
207 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: ...
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1answer
73 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
137 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
707 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 ...