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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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19
votes
4answers
28k views

What is the difference between a miner and a full node?

I have trouble finding the difference between a full node and a miner. It looks like these two names are used interchangeably which I think is not entirely correct. Miners do process blocks and full ...
12
votes
2answers
3k views

Will the size of a Bitcoin Core full node be too big to run on a normal computer?

I am a Bitcoin enthusiast, with no background knowledge in computer science and cryptography. I once ran Bitcoin Core on my laptop but realized that it occupied too much space on my computer. I ...
9
votes
2answers
2k views

Running lightning in prune mode

I am running lightning with the LND implementation and a full node. Nevertheless, I heard that it is possible to use Lighting in pruned mode. How is this possible? I read in the LND install ...
8
votes
3answers
8k views

How long does block validation take?

Assume a miner receives a new block from a connected peer. Please correct me if I'm wrong: The miner validates the newly received block before using it themself and sending it to their other connected ...
8
votes
1answer
7k views

How can I benefit by running a full Bitcoin node?

I noticed that I can run a node with Bitcoin Core. If I open my computer always and make the full node run on my device, what benefits can I get? Is there any reward for serving this?
8
votes
3answers
2k views

Is there incentive for those who run lightning nodes?

This is likely very much a noob question, but I would like to know if there are fees or incentives for those who are running a lightning node? Of course, other than having access to lightning network?
7
votes
1answer
1k views

What are the advantages to become a bitcoin node?

As far as I understand, the nodes are responsible for verifying the transactions and the blockchain, but also to relay transaction over the bitcoin network. Being a bitcoin node require a certain ...
7
votes
1answer
596 views

Can I send almost 1MB transaction?

Block size is still limited to 1MB. As I understood, transaction size is no longer limited. So can I be sure that my transaction with 29000 outputs and reliable fee will be included into block? Or ...
7
votes
1answer
745 views

How do I still have connections without forwarding port 8333?

First of all, this isn't a problem I am having, I'm just curious how this works. If you run your node with port 8333 open, you'll receive a large amount of connections after being online for a while....
6
votes
2answers
2k views

Do I need to keep all blocks when running Bitcoin Core?

Do I need to keep all blocks, from block 0 up to the current one, when running Bitcoin Core, either as a full node or not? Or can I just keep the more recent blocks to save space?
6
votes
1answer
113 views

Can Bitcoin full nodes pinpoint the true source of a transaction which they've relayed?

Assume I'm running a full node and that I've relayed some transactions. As a full node owner, can I pinpoint the true source of the transactions I've relayed?
6
votes
1answer
756 views

Transaction verification by miner VS full node with & without SegWit

I'm trying to fill a few gaps in my understanding of transaction verification and would appreciate any insight. Without SegWit Miners broadcast new blocks which contain the signature(s) with every ...
6
votes
1answer
2k views

How do I remove Wallet from Bcoin?

I'm playing with bcoin cli and created lots of wallets. Is there any way to remove wallet via WalletDB Api?
6
votes
1answer
2k views

Running a Bitcoin node (behind Firewall / NAT or anything else? disallowing inbound connections)

I consider running a bitcoin full node on a raspberry Pi 3. I want to attach the raspberry Pi into my home-network (wifi). When I check my IP address I have a public address to the outside (which is ...
6
votes
0answers
38 views

bitcoind does not issue expected “rpcuser” message after installation [duplicate]

The instructions for installing the non-ubuntu linux bitcoind read as follows: Before using the Bitcoin Core daemon, bitcoind, you need to create its configuration file with a user name and password. ...
5
votes
3answers
1k views

What is the meaning of the term “full-node”?

There seem to be some different interpretations of what the term "full-node" implies. E.g. there seems to be some disagreement whether a pruned node is still a full-node. So: What characteristics ...
5
votes
1answer
4k views

How to check if my node is fully sync'ed

Using bitcoin-cli, how do I check how sync'ed my full node is?
5
votes
2answers
469 views

Is the UTXO set computed from scratch by new full nodes?

When a new full node joins the network, does he, by default, compute the UTXO set from scratch from the blockchain so far; or does he simply trust the UTXO set he received is valid?
5
votes
1answer
116 views

Betweeness Centrality LND node

How can one calculate betweeness centrality of your node as mentioned in this video. I would like to take into consideration base_fee_msat fee_rate Is there a smart way to figure out what suites ...
5
votes
1answer
4k views

Checking if full node is running

I just followed the instruction to run full node in Ubuntu using the below bitcoin.org link. https://bitcoin.org/en/full-node#ubuntu-1610 How do I verify if the full node in PC is active and running? ...
5
votes
1answer
3k views

Running full node over Tor

I am attempting to run a full bitcoin-core (v0.13.1) node over the Tor network for the first time. I have set up my /etc/tor/torrc file with the following two lines: HiddenServiceDir /var/lib/tor/...
4
votes
2answers
159 views

Why do two different fully synced Bitcoin Core nodes differ in the blockchain size?

The size_on_disk printed when executing getblockchaininfo is 1.2 GB smaller than other nodes are reporting at the same time/block. txindex=1 What could it be?? I've asked to other peers on twitter ...
4
votes
3answers
119 views

Bitcoin core full node - Should I choose my peers or it's fine to use the hardcoded ones?

I have a full node v 0.17.1 running 12-14 hrs/day and I was wondering if it's helpful, for privacy or for whatever reason, to add peers (maybe from https://bitnodes.earn.com/nodes/leaderboard/) with ...
4
votes
2answers
297 views

Does a 2009 node sync the whole bitcoin blockchain

So does a 2009 node sync the whole bitcoin blockchain and does the temporary split of 2013 have any impact on that?
4
votes
2answers
751 views

Would more Full Nodes help scaling and transaction speed?

There seems to be lots of disagreement between Core, Classic, etc on how to scale up Bitcoin. As far as transactions per second, and transaction fees, would simply adding more Full Nodes to the ...
4
votes
2answers
107 views

What economic incentives would help wider geographic distribution of bitcoin nodes?

https://bitnodes.21.co/ Full nodes are important everywhere providing visibility and improved network latency. In areas where bitcoin mining is not profitable due to the high cost electricity or ...
4
votes
2answers
791 views

in bitcoin core, how to use Tor for broadcasting new transactions only?

I have set up a full node with bitcoin core running on the internet. I have also set up a wallet running on a private machine that communicates to the full node to broadcast new transactions. To ...
4
votes
1answer
331 views

Performance and modularity of Bitcore vs Toshi

I have been reading about both, BitPay's Bitcore and Coinbase Toshi, and although they both claim to be highly scalable I could not find information in order to compare them in terms of performance ...
4
votes
2answers
364 views

Can bitcoin node startup be secure without validating the entire blockchain?

One of the largest hurdles in my mind to increasing the number of full nodes operating is the startup cost related to downloading the blockchain. A similar but less important (in my mind) issue is ...
4
votes
2answers
709 views

Does the `blocksonly` setting prevent other nodes from sending my node unconfirmed transaction, or does it simply cause my node to ignore them?

I've seen this option discussed, but I don't have a clear understanding of what is going on. Since this setting appears to reduce node bandwidth by as much as 88%, I assume it somehow communicates to ...
4
votes
1answer
335 views

Why would running a light node riskier and subject to more frauds than a full node? We don't NEED a full ledger, do we?

I've been reading on light node and many have pointed out that the light node doesn't have the full blockchain and is riskier because they can't verify the transactions fully. First, we can verify ...
4
votes
1answer
1k views

What does “NODE_WITNESS (12)” mean as it is shown in bitnodes.21.co?

I'm running a pruned full node of bitcoin core version 0.14.0 and checking on https://bitnodes.21.co/nodes/ I can see that my node was labelled "NODE_WITNESS (12)" unlike of the others nodes shown, ...
4
votes
4answers
8k views

Should I use a full node as my main wallet?

A few days ago I decided to download Bitcoin Core so I can use it as full node, to help the network and also as my main wallet. Since then I keep reading a lot of people saying that you shouldn't ...
3
votes
3answers
524 views

How exactly are Bitcoin's consensus rules enforced?

There are some rules called consensus rules, for example the block generation amount. And it is said that "a change to consensus rules is a hard-fork". But how exactly are the consensus ...
3
votes
1answer
303 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 &...
3
votes
1answer
805 views

What does one need to do to earn Decred through PoS?

If I understand correctly, Decred can be mined through PoS (Proof of Stake) rather than PoW (Proof of Work). What needs to be in place to achieve this? There are some technical details here about ...
3
votes
1answer
73 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 ...
3
votes
1answer
178 views

How does nix-bitcoin provide greater security for installing Bitcoin nodes?

nix-bitcoin claims on its GitHub repo to facilitate the installing of Bitcoin nodes and higher layer protocols (e.g. Lightning) with increased security? How does it do this? [edit: as RedGrittyBrick ...
3
votes
1answer
114 views

Can a node broadcast a valid signed raw transaction while still syncing?

Built and signed a native bech32 UTXO, but when I attempt to broadcast from my testnet node using the command sendrawtransaction it returns "missing inputs". I don't have the private keys in my wallet,...
3
votes
1answer
1k views

How can a pruned node be classed a full node without the full blockchain?

A full node is a node with the whole blockchain and is able to verify any new incoming blocks. A pruned node, is a node with only some of the blockchain, namely it has removed some of the older ...
3
votes
1answer
266 views

How do I get transactions from the Bitcoin Blockchain with bcoin?

Is this possible with bcoin? Do I need a full node to get transactions or does it work with an SPV?
3
votes
1answer
137 views

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?
3
votes
1answer
58 views

Can pruned nodes perform fee estimation?

The fee estimation in Bitcoin Core is based on the previous blocks. Since the minimum pruning size for pruned nodes is 550 MB, a pruned node may actually not have the last 1,000 blocks, which is the ...
3
votes
2answers
88 views

What is the default number of transactions a full node have in its mempool?

Is there a default limit to the number of transactions a node can keep in its memory pool? Or do we have to explicitly declare maxmempool=xyz to restrict the number of transactions a node can have in ...
3
votes
1answer
66 views

Is it better to compile bitcoin node or rather for some reason just use the official binaries?

As I have some doubts about a possible hackers' attacks on https://bitcoin.org/ Wanting to run a full node, I rather compiled the Bitcoin Core from git source for Linux instead. The question is: ...
3
votes
2answers
766 views

How to run a full node: Am I already doing so?

I've succesfully installed bitcoind and bitcoin-cli. I got some questions about it: I run bitcoind in the background by typing: bitcoind -daemon and the blockchain begins to download: By typing ...
3
votes
1answer
125 views

How does a full node decide which outbound peers to have?

I understand that a full node can have up to 10 outbound connections (8 full relay peers and 2 block-relay-only peers). I wonder how my full node decides which nodes to connect to for outbound. What ...
3
votes
1answer
329 views

Checking whether lightning node is online/visible

I just created my first lightning node and already have one active connection. My problem is however, that I do not see my node in any lightning network explorer. Is it possible to somehow check ...
3
votes
1answer
692 views

Full node vs lightning node

What is the difference between a full node and a lightning (network) node? If a lightning node, that is not a full node, opens a payment channel with another lightning node, how can the first peer ...
3
votes
1answer
94 views

Lightning Network node without opened channels

If I have a LN node without open channels, does that improve the robustness of the network? I have a BTC and LN node running 24/7 on a Raspberry Pi 3, and no BTC at the moment to open a channel.

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