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
23 views

Can lightweight wallet users exchange money?

Instead of downloading full block chain, lightweight (SPV) users only download blockheaders of the blockchain. This makes SPV users to check if transactions are confirmed or not. However, can SPV ...
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1answer
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What scenario could a lack of bitcoin full-node cause problems in the network?

Let's say the only full-nodes in the network were the mining nodes. If you joined the network as a full-node, what problems or attacks could happen in such a scenario? Also, what problems or attacks ...
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Bitcoind gui client, wallet client with peer preference, node manager

first time user here so politely point out any thing I have done wrong. I am looking for three things, but first let me explain the situation and use case: I am using bitcond full node on a headless ...
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1answer
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How should I do if I want to run a full node in GUI?

I'd like to run a full node within bitcoin-qt.exe(It's GUI) I would like to run it as full node like typing command : "bitcoind -daemon" Is it enough to run by just execute a GUI wallet(bitcoin-qt....
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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?
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Full block chain on a mobile phone

The full block chain size is currently roughly 145GB, I can handle such a download in a laptop or a desktop pc but how does it work on a mobile? I cannot download such an amount of data into my phone, ...
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1answer
115 views

Is it possible to alter the source code and still have a valid Bitcoin transaction?

Say I wanted to run an alternative version of Bitcoin, and I changed 1 line in the bitcoin source code. Is the signature/hash of the completed transaction going be the same or different when I run ...
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1answer
620 views

Pruning a Bitcoin full node

I am running a full node and considering pruning to gain some disk space. Does Bitcoin Core know how to prune the existing database or will it start the entire sync process over? How much free disk ...
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1answer
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Can a bad actor omit an unspent address from a pruned chain?

This isn't a problem today, because if I want to run a pruned node then I still have to download the whole chain, but it sure would be nice if I could just download a pruned chain instead and validate ...
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Legally shuttering miners and full nodes by adding illegal information to blockchain [duplicate]

In many jurisdictions possession or distribution of certain information or content is illegal. Illegal primes, classified information, magnet links to copyrighted torrents, hate speech, outlawed ...
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How is scalability of walletnotify of the full node wallet

I'm thinking about how large exchanges handles customer deposits, it appears there are two available solutions, one is to use external notification apis, like blockchain.info 's notification api, ...
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1answer
994 views

Security risk(s) in running bitcoin core full node

What are the security risks posed by running a full node bitcoin core client? On a typical system, port 8333 is open and all other nodes can actually 'see' my machine and sites like https://bitnodes....
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1answer
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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: ...
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477 views

What would a full node do if it finds an error?

Full Nodes are supposed to validate every transaction and block in the blockchain, and provide valuable links for distributing blocks. And because the consensus algorithm is extremely good, there are ...
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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? ...
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What is the ideal public nxt.properties config file for a public facing node for NXT / Ardor?

I can't find a template for nxt.properties when running a public node. Is there a public template I can just copy and paste and make some adjustments for NXT / Ardor?
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Can I run Trezor Wallet against my own local node on OSX?

I want to point Trezor Wallet at my own local node. I'm already running Bitcoin Core, but Trezor Wallet requires Bitcore. What I have tried: 1. Installing the latest bitcore version according to the ...
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Which full node implementation(s) supports SegWit2x?

I'm running a full node, because I want to support the Bitcoin network, and because I'm interested in the backend mechanisms in Bitcoin. Now, SegWit2x is approaching. I believe it's important for ...
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0answers
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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 into a.b.c.*...
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Share blockchain data between bitcoin-core and btc-1

I am currently running a BTC-1 node and would like to setup an additional core node before the November fork. Ideally, I would avoid the need to resync the entire blockchain again. Is it possible for ...
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3answers
530 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 ...
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3answers
640 views

As a full node, does limiting bitcoind bandwidth hurt the network?

As the top answer to this post, Maximillian Laumeister claims: "IMPORTANT NOTE: If you limit the bandwidth of Bitcoin Core far below your actual upload speed, it can actually harm the Bitcoin network ...
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2answers
3k views

Full Bitcoin Node Download / Synchronization Takes very long

I want run an Full Bitcoin Node on Ubuntu but it takes 3 Days to download all of the Bitcoin Blocks from 2009-2017. I have 8 MB/s Internet Speed. Why does it take so long, the blockchain is only 150GB ...
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1answer
116 views

Do I need to run a full node before the 2X fork?

There is a meme out there that goes like this: "Bitcoin Cash taught people they need to own their own private keys, segwit 2X will teach people they need to run full nodes" Do I need to run a full ...
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1answer
555 views

Run a full node with multiple IP addresses

I run a full Bitcoin node on a powerful server however rather than setting up multiple I was wondering if it's possible to use multiple IP addresses on one installation and one running process? ...
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Why isn't my full node accepting incoming connections from other nodes?

I have a full node on a Gentoo box. I have port forwarding on my router setup so that port 8333 is sent to the IP of my full node. I opened port 8333 on the machine using: iptables -A INPUT -p TCP --...
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1answer
168 views

Running full node on OSX, how to tell if its working correctly?

I'm running Bitcoin-QT 0.15.01 on an iMac (4 GHz Intel Core i7, 40GB RAM). It seems I am receiving the latest blocks, but is the rest working as it should? I have opened port 8333 on my router and ...
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4answers
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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 ...
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So what exactly is my full node doing?

I am aware of (I'm avoiding the term understand) the functions of transmitting/validating transactions/blocks but mainly trying to understand the resource utilization of my machine running the full ...
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1answer
810 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 ...
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1answer
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Do I need to pay fees for the transactions from my full node?

I have a full node running right now. I've created a wallet on my server. Do I need to define any transaction fees while transferring my coins to another wallet? lets say to a wallet on blockchain....
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362 views

Full node or Full node third-party services pros and cons [closed]

I'm setting up P2P Bitcoin website similar to LocalBitcoin for school project. Before I go deep into this journey I'm doing some plannings. I have lot's of questions in my head and have been studying ...
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1answer
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Do i have to run full node to receive unconfirmed transactions?

i want to query unconfirmed transactions by using getrawmempool. do i have to run a full node ? or if i set prune in bitcoin config, will i still get the newly unconfirmed trsanctions ?
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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?
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1answer
201 views

Bcoin - Database backend not found

/root/BCoin/node_modules/bcoin/lib/db/backends.js:16 throw new Error('Database backend "' + name + '" not found.'); ^ Error: Database backend "leveldown" not found. at Object.get (/root/...
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200 views

Bcoin crashes with node version error

I installed bcoin and I get this error about the version: $ node -v v8.2.1 $ npm -v 5.3.0 $ bcoin /usr/lib/node_modules/bcoin/lib/db/backends.js:26 throw e; ^ Error: The module '/usr/lib/...
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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?
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1answer
170 views

Resyncing bcoin brings up database version error

I was resyncing my bcoin node and got the following error: Error: Warning: Your database does not match the current database version. This is likely because the database layout or serialization ...
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1answer
177 views

What do I support with Bitcoin Core Version 0.14.2

At the moment I'm following the discussion about BIP-141, BIP-148, SegWit and SegWit2x (NYA). But I'm confused. I'm running Bitcoin Core Version v0.14.2 as a full-node. It's currently downloading the ...
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1answer
690 views

How many peers do you need to securely synchronize with the blockchain?

What is the minimum number of peers required to securely synchronize my local blockchain copy?
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1answer
1k views

technical requirement to running a Bitcoin node

I want to run a full node in order to support the network, however i am wondering about what are the technical requirements to do so. how much RAM(for utxo) do I need? and what internet throughput ...
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0answers
456 views

Full Node Not Taking Incoming Connections

I set up an RPi3 with Bitcoin full node 13.2. It is running Raspbian the latest version and is up to date. My router has a static IP on the public internet. My RPi3 is behind NAT. I configured my ...
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1answer
774 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 ...
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1answer
297 views

Any plans for Bitcoin Core app to integrate Hardware Wallet support?

So I could use the full node and wallet easily integrated with a HW wallet and avoid security exploits? Recently had a case of someone that had all his wallet stolen probably because of a keylogger - ...
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1answer
329 views

Is there any “added value” to run a full node behind a router or firewall?

By reading different questions/answers on the bitcoin full node subject, I am still wondering if there are any "added value" in running a full node as an individual. Most of the "everyday life" ...
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1answer
268 views

Does having a pruned node reduce its network score?

My node's network score (revealed by getnetworkinfo) is very low (<75). Most of the time there are no peers with incoming connections connected to the node. Is this because I'm running a pruned ...
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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, ...
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1answer
2k views

Connecting full nodes within a LAN to speed up blockchain sync

Bitcoin core v0.14.0 seems to be a lot quicker than previous versions, to the point where syncing the full blockchain now seems to be IO-bound rather than CPU-bound: When running top I used to see my ...
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596 views

How does bitcoin prevent tampering of blockchain?

Suppose C is starting bitcoin full node for the first time. C would have to download blockchain from some place. Could not this leave bitcoin susceptible for tampering? If blockchain stored in ...
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1answer
788 views

How do I detect a DDOS attack on my node?

I have seen some posts on bitcointalk.org that there is a DDOS attack against nodes happening right now and they have instructions how to ban the attacking IPs. How can I tell if my node is getting ...

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