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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1answer
50 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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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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During a IBD : Initial Block Download by a full node, from where is the blockchain downloaded?

I understand that a full node requires to do an IBD before being able to verify transactions. So, it downloads the ledger upto now, which is known as Initial Block Download. But what I don't ...
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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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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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Litecoin get Wallet information and or balance [closed]

So i have looked around a lot. I came to the conclusion that there is no efficient way of lookup up wallets that are not locally stored in litecoin. I saw a project like bcoin that modified bitcoin-...
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1answer
30 views

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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Litecoin/Bitcoin Node Blocks Are Not Counting Up [closed]

The Node has been running for more than one hour and the blocks are still not adding up. Only headers. Heres my litecoin.conf Also, the litecoin-core is identical to bitcoin-core (methods, build up ...
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1answer
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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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1answer
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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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1answer
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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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1answer
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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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1answer
35 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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1answer
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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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1answer
34 views

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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1answer
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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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2answers
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% of full nodes running Bitcoin Core versus other node software

Is anybody able to tell me a credible source (for an article) that can show me the percentage of all bitcoin full nodes that are running Bitcoin Core (as opposed to other software)? I could not find ...
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How could I make my own API to query the blockchain

I'm looking to access transaction history for some specific coins directly from the blockchain. The main reason is that most of current API are not free or don't provide information for the coins I ...
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1answer
87 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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1answer
33 views

How bitcoin daemon search nodes to connect? [duplicate]

How bitcoin daemon search nodes to connect? What file in github responsible for this? How they often change? How is the veracity of the data of these nodes checked? Bitcoin daemon have function not ...
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Connecting Ledger Nano X wallet to my Bitcoin node

I've been trying to connect my Ledger nano x to my bitcoin full node following this instructions by Ledger. I have configured the bitcoin.conf file as follows: prune=0 txindex=1 server=1 daemon=1 ...
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1answer
48 views

How to extract all info for a public address from a local full node's db?

I recently started running bitcoind on a local Debian host, and I am still learning how to use the information in the local copy of the bitcoin blockchain. I would like to extract all the information ...
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1answer
56 views

How to get info for public address from bitcoin-cli + local db? (Can it be done without creating a wallet?)

I just started running my own full node. IBD is finished, and I'm now learning how to use bitcoin-cli. First I would like to extract all the available information for one or more public addresses ...
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1answer
57 views

Increase maximum number of outgoing connections for full node

If incoming connections are disabled, Max full-relay connections are 8: src/net.h#L64 and Max block-relay-only connections are 2: src/net.h#L68 How are these decided and how can a user change these ...
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Computation expenses of syncing / getting a full node up and running, hardware considerations

Since a full node needs to process the entire block chain from the beginning and it keeps getting bigger this requires more computing resources over time. Does it seem more likely in the near future ...
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1answer
93 views

Understanding Nano Ledger S concept + Full Node

Nano Ledger S is often referred to as a cold storage hardware wallet. If my understanding is correct, this device is kind of like a little transaction signing machine to be used in conjunction with ...
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Bitcoin Core Security

Is there any site or resource where I can learn how to do security transactions while trading on bitcoin testnet
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1answer
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Unable to use `blocks` and `chainstate` from external drive

I want to use data directory from a different location (external SSD) on a Windows machine. When I save the path for it in bitcoin.conf it still uses old data directory. How can I use datadir in ...
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1answer
77 views

Running a full node VS mining [duplicate]

I read the following on bitcoin.org A full node is a program that fully validates transactions and blocks. Almost all full nodes also help the network by accepting transactions and blocks from other ...
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1answer
108 views

bitcoind no such file or directory when trying to execute on Ubuntu for Raspberry Pi 4

Trying to install and run Bitcoin Core Daemon on a Raspberry Pi 4 8GB w/ Ubuntu Server and unable to execute bitcoind. Below are the exact steps I am taking: Use Raspberry Pi imager to flash the ...
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1answer
56 views

Connecting a Hardware wallet to a full node

I'm trying to connect my hardware wallet to my personal full node for the sake of privacy. I need to know the node's IP, port, and RPC credentials. The first two are easy, I can see my full node in ...
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2answers
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Does Bitcoin “confirmations” have nothing to do with fullnodes — only miners?

Roughly every 10 minutes, a new "block" is created. If Joe sends Sue a satoshi, it will be at least 9 minutes and 59 seconds until they get 1 confirmation (as I understand it). Then, ...
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1answer
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Why doesn't Bitcoin use a DHT to store its blockchain?

Why doesn't Bitcoin store its blockchain in a DHT, but instead makes each (full) node store the entire blockchain? related questions: "Why doesn't Bitcoin use a DHT for choosing peers?" and &...
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How to configure Bitcoin core running on Whonix to receive inbounds

I'm running a bitcoin full node on Whonix. The problem is I get zero inbound connection (11 outbound). I know I can do port forwarding and open the desired port to receive inbound connections. Now, ...
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how is bitcoin network protect itself from malicious nodes? [duplicate]

Can someone explain how does Bitcoin network protect itself from malicious nodes? Lets say someone creates bitcoin core clone and they manipulate it to their need. For example could someone change ...
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1answer
49 views

Only 10 connections on my raspberry pi full node

I'd like to know why I only get 10 connections on my full node? Is there something missing in the conf file? $bitcoin-cli -netinfo Bitcoin Core v0.21.0.0-7d8a10a6f - 70016/Satoshi:0.21.0/ ipv4 ipv6 ...
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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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1answer
64 views

Quantifying the long term costs associated with self hosting the Bitcoin node?

In this question I discussed the option of self hosting the Bitcoin node vs. using 3rd party services with API access. I quoted a colleague who said that "for every coin we wish to support, we ...
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2answers
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Pros & Cons of Self Hosting Bitcoin Node vs using a 3rd Party Service?

We are a medium size company building a blockchain application that requires us to interact with the Bitcoin blockchain (+ several other cryptocurrencies). One option is for us to use a 3rd party ...
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1answer
73 views

I heard a message was encoded into the blockchain, how can I read it?

I have been running a few full Bitcoin nodes for a long while now and I've decided to start learning how to interact with a node to get different information. Recently, Elon Musk's two messages were ...
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bitcoind -daemon command error

Im trying to open bitcoin core withthe command bitcoind -daemon My node is working perfectly with GUI But When trying to run bitcoind -daemon error: Could not connect to the server Make sure the ...
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2answers
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Error: Prune mode is incompatible with -txindex

How do i remove this prune mode??
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1answer
284 views

If pruning is so safe, why aren't 100% of the Bitcoin nodes pruning? Why keep the unnecessary data?

I have a fully synced, non-pruned Bitcoin Core on this computer. I have an almost-fully synced, pruned Bitcoin Core on another computer. What exactly is the motivation for keeping those 368.5 GB of &...
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1answer
47 views

How does a full-node index watch-only addresses?

I can import watch-only addresses into my full-node's wallet. I can start querying their utxos from that point onward. Where are watch-only addresses stored and how does my node keep index of their ...
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1answer
43 views

Connect to custom bitcoind

I have a fully synchronized btc node on my network. Which mobile apps (android) and desktop apps can I use to connect to this node without running a full node/ daemon on the desktop or mobile? And how ...
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1answer
637 views

Is an SSD required to run a bitcoin full node and a lightning node?

To run a full node and lightning node, I always read that people should use SSDs. Is that really required? And why is that? It's a slowly growing blockchain after all. I would have everything for an ...
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1answer
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Why don't Bitcoin Full Nodes who are not Miners get compensated? [closed]

Why don't full nodes who are not miners get compensated for running, storing and validating the network?
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2answers
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How do nodes verify backwards incompatible blocks?

When you start the initial block download with the latest versions of Bitcoin Core, how does your node know that old blocks were valid according to different rules prior to soft forks?
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177 views

Very slow sync on low end PC - what to upgrade?

[Hi, I have to re-ask this question because I cannot recover my account from the last one. Sorry about that.] I am a newbie to bitcoin. I am trying to sync a full node on my low end PC: 2g RAM, dual-...
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0answers
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How to approach building a custom UTXO index on top of a full-node

I want to avoid physically importing addresses into a wallet. I want to write a UTXO indexing system on a per-address basis. I often wonder how a wallet can keep track of all of its addresses UTXOs, ...

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