Questions tagged [nodes]

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

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I am running Bitcoin core, how can I tell if my node is a 'full' validating node or a 'listening' node?

I understand there is a difference between the two. But how can I tell?
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Running a Node To Support the Network [duplicate]

Is there compensation in sats for individuals who invest in running nodes in support of the Network?
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It only takes 20,000 computers to alter the Bitcoin blockchain?

Google says As of now, there are roughly 12,130 public nodes running on the Bitcoin network. So in a nearby small city, there are 70,000 people. If 1 household is assumed to have 3 people on average,...
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Network Unroutable

I just started running bitcoin core on a dedicated laptop. I wanted to see if my node is connected to my Wasabi wallet so I sent some sats from Strike. In the peers list Wasabi shows up but under ...
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Connecting A Wallet To A Pruned Node

I've connected sparrow wallet to a pruned bitcoin node but all my utxos are not showing. I would imagine that since I haven't spent them and since pruned nodes still keep the entire bitcoin UTXO set, ...
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blockchain nodes that dont get the new block

i read somewhere that after 40 second of creating a new block in the blockchain there's still 5% of the nodes that does not have the block, what happens to them if they were offline or down at that ...
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Not able to create private V3 onion service

I'm trying to secure my onion service running on my VPS node. I followed the steps of the official tor guide and this guide. Everything works fine UNTIL I get to the point where I have to modify the ...
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1answer
3k 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 -...
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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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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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Can a node be maliciously programmed to validate all the transactions coming from a specific entity?

In a blockchain there are miner nodes and validator nodes. The job of a validator node is to validate transactions to be included in the mempool, broadcast or propagate the transaction for the other ...
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What if there where no nodes to share a new block

I am fairly new to blockchain technology, so bear with me if i make mistakes So lets say there are 10 people trading a cryptocurrency 5 of them are online from 8 to 10 am and the other half on online ...
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What do pruning nodes contribute to the network?

Pruning nodes are described in the sourcecode thusly: -prune=<n>: Reduce storage requirements by pruning (deleting) old blocks. This mode is incompatible with -txindex and -rescan. I’ve ...
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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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453 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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Why blockchain new node verify all transactions in blocks?

Hello I'm the student studying blockchain and bitcoin. I have a question that why all node verify all transactions in blocks. I check if new node connect bitcoin network, then the all transactions in ...
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Connection Reset after sending mempool message

I build a python script to talk to bitcoin test nodes. When I'm sending mempool messages, my connection is getting is reset. Also sometimes when connecting to Jimmy Song's testnet node (testnet....
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1answer
134 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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What is Jailing tx HASH?

I participate in the testnet (I am a validator), and one of the tasks is to force myself to go to jail and write a timestamp, jailing block height and jailing tx HASH, but as far as I know there are ...
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364 views

How to allow/setup crypto transfers/payments on my website?

I'd like to learn how to allow end users on my website to pay for goods using cryptocurrency. Questions I have: 1 - How would I confirm the transaction has been received ? 2 - How would I confirm ...
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369 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 "...
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bitcoincore with linux (tgz) or arm linux

I am running a node on a raspberry pi 4 model B 8gb with linux as os, should I update bitcoincore with linux (tgz) or arm linux.
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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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Will the bitcoin blockchain eventually grow too large to be able to be run 'by anyone'?

A key component of bitcoin is its decentralization (which effectively only exists with BTC and virtually nothing else). Part of this decentralization is the decentralization of the bitcoin nodes, ...
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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
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109 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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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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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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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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What makes the bitcoin network decentralized? is it the nodes or the miners or both?

I wonder what makes the bitcoin network decentralized? Do nodes participate in making the network decentralized? or is it just the miners and all about the hash power to take over the network aka 51%&...
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Do nodes or miners have ids

Do bitcoin nodes or miners have ids that can be used to identify them. Like how do we know if it is the same miner that has added several blocks consecutively? Or how can I identify a node uniquely?
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Can Bitcoin nodes vote to increase the money supply beyond 21 million?

Is it possible for 51% of the Bitcoin nodes to pool and vote to increase the money supply limit? Is that allowed in the protocol?
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To run a full node, should I get a static IP address from my ISP?

I have a router connecting my home LAN to the ISP. After opening port 8333 on the router, and forwarding it the computer running the node, bitnodes.io confirmed the node was reachable. However, ...
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Is it possible to restrict Bitcoin's network traffic?

Bitcoin is just a software running on a computer communicating securely with peers on the internet. What will it take purely in technical terms to ban Bitcoin nodes from communicating with the network?...
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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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Does receiving a transaction interrupt proof-of-work? [duplicate]

As I understand it, when a transaction is broadcast to a node it then gets relayed across the whole network. If you have a collection of transactions that you're trying to figure out the nonse for and ...
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120 views

If there are a significant number of pruned nodes on the network will it impact network security?

The size of the Bitcoin blockchain is reaching 350 MB and adding more than 60GB per year. I feel verification node centralization a risk if the cost of storage does not drop. My question 1: Is using ...
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1answer
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How do Blockchain Explorers lookup wallets? [Balance]

How do Blockchain Explorers lookup wallet balances? Im trying to make my own explorer. For example Bitcoin-cli does not have a method (function) to lookup a wallets balance. listtransactions does not ...
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How much info share bitcoin nodes between other nodes?

1.If we assume bitcoin nodes share the other nodes addresses in the end every node know other nodes adresses right? 2.If we share data through network every node share the same information other ...
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How do nodes contribute to security when the power comes from mining and what is the chain of transaction validation?

Blockchain security comes from the decentralisation of hashing power by miners. They append transactions to a block, perform PoW and add them to the blockchain when that validate blocks. How do nodes ...
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BTC Node for Dummies [duplicate]

Just downloaded, and I am now running a BTC pruned node. Is there a good primer or beginner's guide to running it? I have more questions than I think I can ask in one post.
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What happens if nodes have different P2P versions during discovery?

My understanding is that nodes connecting to each other to exchange messages starts with a version handshake such that each node sends its P2P protocol version and gets an acknowledgement and vice ...
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117 views

Relocating Physical Node Location

Are you able to relocate your node's physical location (i.e., move from Oregon to New York) and keep all the channels you've established intact?
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113 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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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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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 ...
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What would happen if you tried to follow two Bitcoin blockchains from the same computer? [closed]

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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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 : Get the Account XPUB [78Bytes] SHA-256 SHA-256 Again Created Extended XPUB (XPUB ...
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If I buy an ASIC miner and run it at home, do I become a Bitcoin node?

I tried to find the Bitlist visualization as mentioned in the documentary The Rise and Rise of Bitcoin, but could not but instead found https://bitnodes.io/ It says there are 9741 nodes. Does that ...
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Can a customized or non-bitcoin node be made to talk to a bitcoin node?

Is it possible to create a node with some different code from the bitcoin nodes but still able to talk to the bitcoin nodes? Is it possible for someone to customize their own node to add some ...

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