Questions tagged [bitcoind]

This tag should be used for questions related to bitcoind, the command-line software for Bitcoin Core. It stands for "Bitcoin Daemon" where a daemon is any computer process which runs in the background ("service" in Windows terminology).

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17 views

Bitcoin core doesn’t see transaction

I’ve created address in bitcoin core from rpc and send some bitcoins on it, but my balance still zero. Transaction exists I’ve checked on blockchain info. Getaddressinfo returns “ismine”: true, but ...
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27 views

Error while syncing with the blockchain

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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If I am on a fork, can the reindex parameter fix this?

I've been reading confusing information online about what the --reindex startup parameter does. This link is not clear to me. https://github.com/bitcoin/bitcoin/blob/...
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If i download the 160GB downloading , i will be global node?

i have a question , i've searched a lot but no answers i get i've installed bitcoin core and after opening the app , it is downloading about 160GB and its gonna take two weeks to be completed my ...
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1answer
35 views

How to reduce number of inputs in bitcoin transaction?

We have a bitcoin node running on a server which we use to generate addresses to receive small payments from the users. We receive tons of small payments daily right now and then we are using the same ...
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1answer
31 views

Does bitcoind ERROR “Disk space is too low!” refer to RAM or actual harddrive?

After having finished the "Initial Block Download" I needed to reindex: [BTC_Core_Expmnt]# bitcoind -reindex -datadir=/mnt/BTC_Core_Expmnt The debug.log showed everything starting up ok; and the ...
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1answer
28 views

how check bitcoind default values

How can I see which values bitcoind is using for eg. dbcache, or other memory and connection params ? If the value is NOT set in bitcoin.conf. Is there a bitcoin-cli command to check all the params ?
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28 views

`bitcoind` RPC: ask if syncing headers or blocks

Is there a way to know from bitcoind RPC if it's syncing headers or blocks? And is there a way to know the header sync progress? Even if not directly available, is it possible to derive header sync ...
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14 views

Derived address different from CLI to NodeJS

Basically I'm trying to create a system in which each user has it's own address to deposit on the site, however I'm having issues with monitoring addresses as they appear to be different results ...
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Is it safe to skip the initial block verification at startup?

The longest step in bitcoin core initialization is "Verifying last 6 blocks at level 3". The number of blocks checked at startup went down from 288 in 2014 to 6 now. Therefore, in order to speedup ...
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Trouble dumping btc wallet

Btc is syncing and taking to long. Would like to dump wallet and sweep in electrum. When I try the dumpwallet command I get "Cannot open wallet dump file (code -8)" What to do? Do I have to stop ...
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Testing libbitcoin-client on bitcoind regtest connection failed

Can I test libbitcoin-client against bitcoin core regtest mode. My connection Fails with no error response. Running curl commands on bitcoind server works fine but running the same commands against ...
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1answer
49 views

Is there a 'command' to get the max supply of bitcoin that will ever exist using the bitcoin-cli?

I would like to know if there a way('command') to know what is the max supply of bitcoin using my own node without trusting a third party. Also if anyone could explain to me why : bitcoin-cli ...
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27 views

Is it possible to set an overall seed for generating blocks on regtest mode?

I am using bitcoin core on regtest mode to simulate sending transactions. Is it possible to set an seed for things like generating blocks or signing transactions, so that you can recreate an exact ...
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Why does my local blockchain keep getting corrupted if I use VirtualBox?

I have the full blockchain downloaded on a local USB external drive. This works fine if accessed directly from the host machine (Ubuntu-Desktop). However, If I try to load bitcoind from a VirtualBox ...
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35 views

Auto load all wallets when start up

Every time I restart my bitcoind, all the wallets will need to be reloaded: $ bitcoin-cli listwallets [ "" ] $ bitcoin-cli loadwallet test01 $ bitcoin-cli listwallets [ "", "test01" ] So I was ...
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1answer
20 views

bitcoind: cannot obtain a lock on wallet directory

Hello fellow bitcoiners, I have a very annoying and mysterious issue with a bitcoind install. I had a blockchain corruption/stuck at some point. I deleted the old blockchain and copied an up-to-date ...
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15 views

Bitcoind Bitcoin-cli in Win 10. Why wallet balance is negative inspite Full Sync and progress = 1.000000?

I am running bitcoind since 3 month and it's fully Sync. I still see negative wallet balance. I have re indexed it many times with no result. would you please help me fin out what is wrong? Negative ...
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Why Bitcoind cannot run simultaneosly? [duplicate]

Someday, my bitcoind was running and I opend another terminal and typed bitcoind on the terminal but, bitcoind which is running was shutdown. so I should have run the first node and have another node ...
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27 views

8333 failed after select(): Connection refused (111)

Hello I run bitcoind and i get this 8333 failed after select(): Connection refused (111). Can you help me with this? because it was working suddenly this happened.
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2answers
37 views

Running bitcoind in a different directory

I installed bitcoin core in windows 10 using ( Windows Subsystem for Linux ) . I installed ubuntu from the store and I used it to Install bitcoin core. The thing is everything was installed in the ...
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1answer
53 views

How to resolve Bitcoin Daemon Warning of last 100 blocks have unexpected version message?

When I run my bitcoin daemon on ubuntu I get the follow warning message. How do I resolve this? And I just pruned my blockchain to 5gb if that affects anything. progress=1.000000 cache=40.4MiB(...
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1answer
40 views

running bitcoin-cli -testnet getblockchaininfo

Hello when I run this command (bitcoin-cli -testnet getblockchaininfo) I get this: { "chain": "test", "blocks": 0, "headers": 0, "bestblockhash": "...
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1answer
40 views

How to calculate the Average velocity and the Average acceleration of Bitcoin transactions

I am working on a Bitcoin project and I would like to extract the following features 1- Average velocity: represents the speed with which bitcoins flow to a user 2- Average acceleration: represents ...
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1answer
33 views

Bitcoind is not synching, why?

My log was stuck on this for 30 minutes: 2019-12-09T22:33:17Z txindex is enabled at height 0 2019-12-09T22:33:17Z txindex thread exit 2019-12-09T22:33:17Z Bound to [::]:8333 2019-12-09T22:33:17Z ...
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21Million total BTC supply mined [duplicate]

What will happens to those miners of bitcoin? Do they still profit on mining?
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45 views

Discovering Bitcoin network topology

For a research I am doing I would love to have a graph with the network of reachable Bitcoin nodes. Active reachable nodes can be extracted by using getaddr messages (e.g. bitnodes project). However ...
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1answer
79 views

bitcoind rpc interface, generate method deprecated in version 0.19.0 (latest)

How to generate a block in the new version of bitcoind. bitcoin-cli -regtest generate 1 The above command no longer works with the latest bitcoind package I want to confirm a transaction I have ...
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bitcoind CocoaPod or similar for Mac Bitcoin projects

So it's easy enough to compile bitcoind for Mac but I was wondering whether anyone had gone to the trouble of creating a framework which could be used to call on all the functions of bitcoind without ...
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1answer
53 views

Is the ordering of blocks in the rev*.dat files same as the blk*.dat files?

I understand that blk*.dat files save the blocks in the order it gets them from it's peers. Is the rev*.dat files in the same order as the blk*.dat files? For example, would the 400th magicbyte in ...
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86 views

How to communicate with Bitcoin core 0.17 using bitcoinj for hd wallet creation?

Hi am building one hobby project and i want to perform some operations in my own bitcoin core 0.17 by using bitcoinj lib. so is there any way by which we can use bitcoin-core 0.17,bitcoinj for hd ...
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1answer
13 views

why using `blockIndex` in bitcoin's code `unconfTxs`

I am reading the code of rpc's estimateSmartFee method , and I can't understand why using blockIndex in unconfTxs ? estimateSmartFee loop unconfTxs to get feeRate(code: https://github.com/bitcoin/...
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1answer
22 views

Can bitcoind and btcd share a datadir?

I've already fully synced the blockchain with btcd, can I point bitcoind at the same datadir and use its contents?
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Is there online tool to check if bitcoin transaction is bip-125-replaceable

bitcoind json-rpc can do it, I think I saw this on blockchain.info but I don't see it now.
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23 views

How can I export a single wallet from bitcoind?

On my full node bitcoin wallet, I have a lot of wallets, I can see them with the command dumpwallet "filename" but if I try to export one of those priv keys to another wallet, (blockchain) this New ...
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3answers
62 views

How to install bitcoind (Bitcoin Core) on Ubuntu?

I want to install a command line-only full node bitcoind on a mini PC with 4GB RAM and Ubuntu. What are the steps to do it and how can I check if it works? (I will post an answer myself, also as a ...
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1answer
250 views

How to install Berkeley DB 4.8 on Linux?

The Unix build notes do not show how to install version 4.8 apart from saying BerkeleyDB is required for the wallet. Ubuntu and Debian have their own libdb-dev and libdb++-dev packages, but ...
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23 views

UnhandledPromiseRejectionWarning: RpcError: Requested wallet does not exist or is not loaded

I run bitcoind default wallet path.but ı request getballance from nodejs api return; UnhandledPromiseRejectionWarning: RpcError: Requested wallet does not exist or is not loaded I use ...
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1answer
38 views

Bitcoind as a service (open at start)

regards. I have bitcoind installed on my VPS using ubuntu 18.04 server, and I want to configure it to autostart when system starts, I know two options to make it happend, the first is this: ...
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1answer
44 views

How to connect LND to bitcoind RPC with authentication cookie stored in a custom folder?

I configured bitcoind RPC to authenticate clients with an authentication cookie. However I cant figure out if it's possible to use this method with lnd while connecting to bitcoind RPC. I would like ...
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1answer
27 views

Does getblockcount return the correct block count when running in prune mode?

I am currently running a bitcoin node with prune=550. The getBlockCount from $ bitcoin-cli getblockcount does not match https://blockexplorer.com/api/status?q=getBlockCount. As I understand it, the ...
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21 views

Creating beck32 address on bitcoin core automatically generate another address on lightning network

my lightning network backend is bitcoind. Interesting when I execute getnewaddress label bech32 another bech32 address is automatically generated. I found it because at the lightning network console ...
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2answers
70 views

are official bitcoin core released compiled with zmq in general?

I installed the binary and try to listen to ZeroMQ stream. But I got nothing out. Then I installed ZeroMQ but still got nothing. https://bitcoin.org/en/release/v0.17.1 so, are official bitcoin core ...
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11 views

Move Bitcoin from account '' to default account

I am running Bitcoind and Bitcoin-cli for my RPC. When I run ./bitcoin-cli getbalance it does not return my correct balance, but when I run ./bitcoin-cli getbalance '' I can see all my funds. ...
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1answer
50 views

Is it actually possible to install Bitcoin full node on a Raspberry Pi 3B+?

A Raspberry Pi 3B+ has only 1GB of ram and this official Bitcoin Core page shows that minimum requirement is 2GB ram and 200 GB storage with 100MB/s read and write speed. But I see a lot of articles ...
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27 views

RPC errors raised by each command

Coming from this question, is there any comprehensive collection of what errors can each RPC command return? For example. Let's say I want to run getbestblockhash or getblockcount. I'm unsure about ...
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why is bitcoind daemon occasionally stuck at `Opening LevelDB in …/.bitcoin/chainstate`despite clean shutdown

My bitcoind daemon sometimes takes an hour to go past Opening LevelDB in .../.bitcoin/chainstate After googling a bit, i thought it was simply an unclean daemon stop causing a leveldb corruption. But ...
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3answers
75 views

How bitcoin application in production retrive UTXO's

AFIK, UTXO of an address cannot be retrieved using bitcoin-core, without importing the address in the wallet. How are application in production able to get UTXO ? Does all the application use ...
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1answer
61 views

Where can I find a usefull log if bitcoind stopped for no apparent reason?

I am running bitcoind (Bitcoin Core) on a Raspberry 3B and the process occationally "disappears" from the list in top. The log debug.log shows no etries, last entry is usually something like 2019-11-...
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1answer
73 views

How do you run one daemon for multiple users?

I have installed Bitcoin v0.18.1 as user1. Everything is fine, but now I need to let user2 access the same run so he can use bitcoin-cli as well. However, once I log into the VM instance as user2 I ...