Questions tagged [full-node]

Nodes that fully verify all of the rules of Bitcoin. The most popular software implementation of full nodes is called Bitcoin Core.

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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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managing wallet from ubuntu/linux

the whole point of cryptocurrency is to be decentralized, so I would like to manage a wallet from my computer (ubuntu 20.04) without relying on a provider (e.g. binance). I would like to use my wallet ...
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Can bitcoin protocol be changed to add economic incentives to validating nodes?

We all want more decentralized bitcoin network and more people to run nodes. However, as we know that things are driven more by market economics rather than philanthropic or feel good factors. Similar ...
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do Bitcoin full node onions also relay non-bitcoin traffic?

During the past week or so I am setting up a Bitcoin core full node on Raspberry Pi and making it as secure as possible. In the public mind, the onion sites and Darknet are associated with many things ...
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What do electrumx peers do for the electrum server?

The documentation here https://electrumx.readthedocs.io/en/latest/peer_discovery.html explains how peers are announced to each other. To run an electrumx server you need a full node to populate the ...
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Can't query own node

I'm trying different ways to query my own bitcoind node on testnet but I'm failing every time. Tried using bitcore's API and nodejs: async function tryBitcoin() { const data = await axios.get('...
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Bitcoin UTXO Balance Checking

I think I understand how the UTXO model works, the inputs, and outputs, etc. However, one thing I am still having a hard time still, is understanding how balance is calculated from a seed or xkeys. If ...
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where can I get on chain data?

I'm trying to make some On chain data analysis, but almost all providers are not free so the question is if I set up a full bitcoin node will be able to extract real time data from it? seems like ...
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1answer
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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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is there a way how to explore bitcoin blockchain

if I want to explore bitcoin blockchain for instance get address' information, transactions, and so on. what is the right place where I can grab this info. I tried https://blockchain.info but they ...
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Can a hacked/tampered full node be deployed in Bitcoin to accept blocks containing invalid transactions?

What if I deployed 3 of my personal tampered/hacked full nodes(with one of them a miner too) that accepts invalid blocks with proper PoW (containing invalid transactions) and rejects valid blocks. ...
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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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Is it possible to run a full node lightning network bitcoin core 22.0 on a 32 bit computer?

I have an old pc with Atom N270 that I would like to use as full node, how can I do that?
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Are there possible attack/failure scenarios when no new nodes verify old signatures anymore (keeping the assumevalid defaults)?

This question came up in a recent discussion with Hasu and I was wondering if there is a good/practical reason why a newly syncing node should change the assumevalid option to 0 (verifying all the ...
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Does running full node in prune mode contribute to BTC network? [duplicate]

If I run current (v22.0.0) full node in prune mode will it contribute to the BTC network (better security, etc..)? In v11.x.x the relay was not working hence no contribution to the network at all (if ...
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Specter Desktop: Can't connect to BTC Core on macOS "-1Error message: autodetect failed" Using external HDD for Bitcoin Core

I have Bitcoin Core is running on the same computer as Specter-Desktop but I'm using an external hard drive to store Bitcoin Core data so I entered the Bitcoin Core "Bitcoin" folder path ...
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Maximum number of outbound connections in 2009

Maximum number of outbound full relay connections is 8 and 2 block-only excluding manual connections (8) right now Maximum number of outbound full relay connections What was maximum number of outbound ...
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Pull Bitcoin node data from external public nodes using JSON-RPC

I read couple of blogs and responses on hosting server to expose data using JSON-RPC but wanted to confirm if there is a way to query node data that I am not hosting (not connecting via P1P) using ...
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Open-source forensic analysis tools to analyze full-node's local copy of Bitcoin blockchain?

Are there any open source alternatives to Chainalysis Reactor for doing forensic analysis of a local copy of the full Bitcoin blockchain?
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Force Closing a BTC lightning channel on Umbrel

I requested to close a lightning channel on my Umbrel node. Sometimes this is a quick process. And other times it takes days. It's been like 2 days now that a lightning channel with peer "...
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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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How to secure bitcoin node (bitcoind) that is used only to broadcast transaction?

I always wanted to run a bitcoin node at home. But I always worry because it is related with bitcoin (BTC has value). I have been broadcasting my transaction using Bluewallet by scanning qr code, or ...
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Is it possible that most validating nodes are dishonest nodes?

I know that if mining nodes are dishonest, they try to double spend. Then if there are many dishonest validator nodes(not mining, but only validating transactions and blocks) on the blockchain network,...
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Copy data from full node to a new pruned node to sync faster

I already have a full node synced with blocks and chainstate folder, however i wanted to run a pruned node, is there a way to copy the blocks or chainstate folder to make the initial sync of the ...
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Verify everything is functioning in my full node

This is a newbie question, sorry. I recently bought Bitcoin and thought I would do something to support the system that I have invested money in. So I bought the hardware to run a full node. I just ...
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submit unconfirmed transaction use submitblock and collect fees [duplicate]

for make unconfirmed transaction at blockchain more faster confirmed, i myself using bitcoin core full node, how about if use submitblock command for make transaction quickly confirmed? also from ...
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How to get the raw transaction on my node with txindexset to 1?

Whenever I try to get a raw transaction I get an error: ubuntu@btc:~$ bitcoin-cli getrawtransaction 2157b554dcfda405233906e461ee593875ae4b1b97615872db6a25130ecc1dd6 error code: -5 error message: No ...
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SPV wallet connecting to personal bitcoin node

I have decided I want to run a bitcoin node both to support the network, learn more about how it works and also so I can participate while minimising trust in external parties. I have a bitcoin core ...
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If I plug a node into another computer does it have to reindex?

imagine you have a Bitcoin Core node synced 100% working fine, its installed in a portable SSD on your laptop. If you want to use this SSD on your desktop, will it boot normally or will it go throught ...
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Are all blocks stored in one file or is every block stored in an individual file? [duplicate]

I couldn't find an answer to that. So, are blocks stored in one or multiple files and in which file format?
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I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44

I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44. Is there a way use a remote node for looking at the Received ...
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1answer
156 views

Does Bitcoin Core have/need an archive mode?

Similar to Ethereum's Archive Node: Stores everything kept in the full node and builds an archive of historical states. Needed if you want to query something like an account balance at block #4,000,...
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Bitcoin Merkle/Hash Tree implementation in Java

I'm learning about how full nodes can send a Merkle root + a list of hashes, so that a light client can verify a transaction. I couldn't find any good resources on how to implement it. I just knew ...
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Noob question: Why is there not a limit of the number of blocks in a chain revision?

I have a noob idea and I want to understand where I'm going wrong :) Say nodes agreed on a block revision limit, say, 6. This would mean that if they see an incoming chain that is longer than the ...
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767 views

Bitcoin Core uploads much more than it downloads

Since Bitcoin is a peer-to-peer network of mostly identical clients, I would expect each node to upload about as much as it downloads. So I was surprised to see that my Bitcoin Core node has (since ...
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1answer
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I have to move homes, so my Bitcoin/Lightning node will be offline for around 1 day

I have to move homes, so my Bitcoin/Lightning node will be offline for around 1 day. What happens in this case to my Lightning channel? Will I be penalised for being offline by the system? How should ...
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1answer
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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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Who enforces new consensus rules in Bitcoin?

I have been reading at few places that miners will enforce new consensus rules. Examples: https://twitter.com/BitMEXResearch/status/1391014115968274433 https://twitter.com/ajtowns/status/...
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Where does a full node get the blockchain from for Initial Block Download?

I understand that a full node needs to do an IBD before being able to verify transactions. So, it downloads the ledger up to now, which is known as Initial Block Download. But what I don't understand/...
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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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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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Why does bitcoind have to listen to the public internet when supporting lnd?

I have been part of experimenting with setting up a system to send and receive lightning network payments. The system uses bitcoin-core (bitcoind) and lnd. Initially, the system was set up on a home ...
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Multisig Setup - Pruned Bitcoin Core on Computer vs. Dedicated Hardware

Are there security implications of running a pruned Bitcoin Core node on a personal computer vs. a full Bitcoin Core node on a dedicated hardware device (i.e. Raspberry Pie with Umbrel, myNode, nodl, ...
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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 I see the workings (console) of my bitcoin full node?

I have just completed the IBD of my bitcoin full node on Bitcoin Core on Linux. When I open Bitcoin Core, i just get the basic wallet interface. It there anyway of seeing what the node is doing behind ...
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Multisig Wallet Setup - Security Tradeoffs With Pruned Bitcoin Core Node?

What are the security tradeoffs of running a pruned Bitcoin Core node for a multisig wallet, such as Specter? It seems that using a multisig wallet with a pruned Bitcoin Core node could be a good ...
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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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258 views

51% attack, miners, nodes or both

If 51% of the hashrate was controlled by bad actors mining invalid blocks, this would become the longest chain. Where do nodes come into the 51% attack? The canonical chain is the longest chain. Is ...
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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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Maximum number of outbound full relay connections

What is the maximum number of outbound full relay connections a bitcoin core full node can make? I was assuming it's 8 but then realized we can add another 8 connections using addnode while reviewing ...

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