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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1answer
41 views

Do bitcoind and bitcoin-qt resume blockchain downloading from the same place?

This is a multi-part question. I downloaded source code of bitcoin core from github and compiled it on my Windows 10. Then I got bitcoind and bitcoin-qt among other commands. I first run bitcoin-qt ...
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1answer
97 views

Send coins from bitcoind full node to lnd without fee?

I'm trying to fund my LND node, for that I put some dust on my BTC wallet address and now I want to send to my LND wallet address but when I try to send with fees "paytxfee": 0.00000000 returns an ...
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43 views

How to create a node to a private blockchain using Bitcoin core

Is it possible to create to connect to a private bitcoin chain with bitcoin core? I created a private bitcoin chain through regtest on one vm. Now I want to make a full node copy of it on a separate ...
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39 views

Submitt transaction with custome fee

I like to doing to submit every new transaction with user specific fee. I don't see any valid documentation for achieve it using RPC call. Give any suggestion. Thankyou
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30 views

Create multiplle wallet in single full node on VPS is possible…?

I like to start a new project on bitcoin. My project is creating a web based bitcoin wallet. I planing that to run the bitcoind on single VPS and use RPC for doing wallet operations. I planning that ...
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1answer
46 views

How does bitcoin core save raw transaction data?

I had a few questions. I've looked extensively online and can't seem to get answers right on point. I just started a full node using bitcoin core and it is currently syncing/validating the past ...
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1answer
112 views

How to setup a testnet full node on Windows 10?

I'm trying to implement an SPV and I'd like to test it on a testnet full node but can't really understand how to do it from what I've found.
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77 views

How do I configure a port in my .conf file?

This is what my conf file looks like: prune=600 maxconnections=12 maxuploadtarget=20 rpcuser=user rpcpassword=password keypool=10000 server=1 [main] rpcport=5040 Whenever I run this from the ...
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61 views

Bitcoin walletnotify doesn't pass the txid as %s

Thoroughly searched this online but haven't found an answer yet. Basically I'm using the below line in my conf file: walletnotify=C:\pathname\filename.py %s It is supposed to run my python file ...
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1answer
111 views

getbalance and listaddressgroupings inconsistent

I imported a private key from my electrum wallet (testnet) to bitcoincore (testnet) as follow: In my electrum wallet, I copy the private key associated to the address ...
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26 views

Can I safely delete database.bak from wallet folder?

In order to save space. I cleaned it up and now my bitcind in freezing, but this might not be the cause.
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146 views

api limit workaround

Are there any ways to avoid limitation for api calls (5/sec)? I need the info about transactions and balance (of certain account), UTXOs and the ability to broadcast my transaction. Currently I am ...
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1answer
27 views

How do I run the bitcoin bx tool in my terminal

I am reading the book Mastering Bitcoin. At some point, I came accross the bx command and tried to run it in the same way as bitcoin-cli (I've got a bitcoin core node running). But I just get the ...
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33 views

How can I connect to my own bitcoind node via json-rpc calls from python3 (or Django)? I'm using Windows 10

Context: I'm using bitcoind on Windows 10 and am able to operate it from bitcoin-cli already. Just want to do it programmatically from python3. Bitcoin wiki says python-jsonrpc is for old versions ...
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1answer
30 views

Bitcoind live wallet backup (by copying wallet.dat)

Is it safe to copy wallet.dat while the daemon is running, or should the daemon be stopped before doing so? I'd imagine it would be safe unless addresses are being generated exactly at the same time.
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204 views

How to perform CPU mining on bitcoin TESTNET on Linux?

I need approximately 100 Bitcoin Testnet to run an experiment on the lightning network. Any suggestion on how to run CPU mining? Should I use cgminer? Make any sense to perform solo mining on ...
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1answer
40 views

How to upgrade bitcoind in docker?

I am running the docker version for c-lightning 0.7 On a raspberry I need to clone the blockchain, but it needs version 0.17.1 Looking at the docker-compose.yml file I see: version: "3" services: ...
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2answers
47 views

What is the best way to differentiate users' balances in a shared wallet?

first time posting around here. I have been thinking about an application that would highly depend on the use of bitcoin for the best user experience. A shared wallet for all users currently seems ...
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1answer
143 views

Bitcoind could not locate RPC credentials but rpcuser and password are set

I installed bitoind and synced it. But when i'm trying to connect from my php website i getting: Unable to connect to http://user:password@my.bitoind.server.ip:18332/. Also when i'm trying to see ...
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49 views

Wallet error ErrorFile=… /testnet3/wallets/db.log

I want to use two deamon for sync mainnet and testnet. I Run $ bitcoind for mainnet without problem After I run $ bitcoind -testnet But I get this error BerkeleyEnvironment::Open: LogDir=/home/...
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1answer
38 views

Implementation of getdata

I am confused about how getdata() is actually implemented at full nodes. Suppose a full node receives a getdata() request with MSG_BLOCK flag and a hash H of some block B. Then would it simply look ...
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1answer
370 views

Bitcoind daemon: error connecting to the server?

I am trying to create a new bitcoin address and store it in a shell variable $NEW_ADDRESS. When I run this command: $NEW_ADDRESS=$(./bitcoin-cli getnewaddress) I get the following errors: error: ...
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2answers
56 views

What is the quickest way to bring a bitcoind node up handling 99% of edge cases?

Currently when syncing a bitcoind node from scratch the time of going from zero (0) to about 50% is a very fast process but somewhere between 50%-75% it slows down considerably and at 75%-85% it ...
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1answer
43 views

.indexes & .tesnet3 not located on my Bitcoin dir

started fresh a new lightning node using the raspiblitz guide but while synching the client from my desktop pc (MAC) i wasnt able to locate these files ( “.indexes .testnet3” ) required by the guide ...
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2answers
185 views

bitcoind only accept the RPC for 127.0.0.1 but the actually ip address

I use the exact same command, one use 127.0.0.1, and the other use 192.168.3.126, only the first one could succeed. Anyone here has met a similar issue before? curl --user root --data-binary '{"...
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1answer
101 views

Bitcoind doesn't start

Im trying to make Stadicus guide work for both Bitcoin Core & LND I did download the blockchain and moved to the HDD on my Rasp3 However, when starting the bitcoind service, im having this debug....
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164 views

How to use -txindex to enable blockchain transaction queries?

I am trying getting the raw of transaction. But I am getting the following error with following command and RPC call as well. bitcoin-cli getrawtransaction ...
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15 views

How to verify a given transaction was sent by a Green Address?

I have run bitcoind. How do I get the funds sent from Green Addresses? If the transaction is sent by Green Addresses, that can be immediately on receipt with zero network confirmations There are ...
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34 views

How to getbalance for any existing bitcoin address, without long wait

I am new to bitcoin. I've read multiple articles and posts on forums and unfortunately I haven't found the answer I am looking for. Some back story... I just bought a 2TB SSD storage, and installed ...
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1answer
58 views

How do I connect my `bcoin` wallet to `bitcoind`?

I have bitcoind running in regtest mode. I want to connect my bcoin wallet to it and retrieve all UTXOs relevant to the sender's address. How can I do that?
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1answer
40 views

Whats the difference in way you installing full nodes

I'm newbie in blockchain world, so I'm curious what is the difference between installing full node by using libs such as bitcore-lib (using node.js) and installing it through the daemon (mentioned ...
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1answer
69 views

How to Bitcoin Core daemon start automatically each time your reboot your computer.?

In the official document of bitcoin.org, they ask to use an init script instead of cron job, see the init scripts directory in Bitcoin Core’s source tree. But the link is not working Bitcoin Core’s ...
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265 views

bitcoin-cli “Could not connect to the server”

Brand new Raspberry Pi mainnet node following this walkthrough: https://medium.com/@meeDamian/bitcoin-full-node-on-rbp3-revised-88bb7c8ef1d1 When I run this command: bitcoin-cli -rpcuser=username -...
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1answer
126 views

How to discover startup flags or command-line options for bitcoind?

I'd like to query the Bitcoin daemon (bitcoind) to find out what startup flags (command-line options) were sent to it on startup (or the current state if it has changed, e.g. -server=0/1 changing). ...
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0answers
45 views

Creating a tunneling (wormhole) service for bitcoin wallets

Zcash recently announced a new wallet and service to connect mobile devices to a node running on a private home network using a tunneling service they are calling "wormhole" (1). Basically it is ...
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1answer
135 views

Bitcoin curl no reply

Hi I have made a curl to my server but get no reply . What am a missing rpcuser=rpcusername rpcpassword=rpcpassword rpcauth=rpcusername:generatedkey daemon=1 server=1 rpcport=8332 rpcbind=0.0....
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28 views

How i can connect to bitcoin core light server?

Need a bunch of Laravel + Bitcoin Core. Need a light version of bitcoin bark. Installed as follows: sudo apt-get install build-essential && sudo apt-get install libtool autotools-dev autoconf ...
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2answers
775 views

How to change RPC port for bitcoind? (rpcport=xxx in bitcoin.conf doesn't work)

I'm running a testnet bitcoind node and I have been doing RPC calls on the default port 18332. I have added this line to ~/.bitcoin/bitcoin.conf: rpcport=19832 And restarted the bitcoind service. I ...
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1answer
44 views

`lnd` on Raspberry pi zeros?

Did somebody try to run the bitcoind full node on the Raspberry pi 3 and one or more lnd nodes on one or more Raspberry pi zeros? My goal is to support multiple LN clients without having to run a ...
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1answer
71 views

Keeping wallet addresses outside bitcoin core

I'm trying to build a good security for my online bitcoin based application. Is something like this possible? send_bitcoin(address) create_address() sweep_balances() + | | ...
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1answer
45 views

Import / create a Wallet from a key with bitcoind or bitcoin-cli to use as a hotwallet?

i've created a HD Wallet via (https://github.com/GemHQ/money-tree) i would like to take the private key and throw that into my daemon so i can listen on incoming transactions and also transfer the ...
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2answers
191 views

Connect to bitcoind from a different device within the same local network

I have a full node running on a Linux device (A) with static IP 192.168.1.203 and I want to run bitcoin-cli commands or even eclair instances from a different device (B) within the same local network. ...
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1answer
161 views

RPC calls to LND using curl?

I have a bitcoind and LND server running. I can make RPC calls to bitcoind using curl, like this: curl http://XXX:YYY@localhost:8332 -H 'content-type:text/plain;' --data-binary '{"jsonrpc":"1.0","id":...
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27 views

How do I know when a transaction never confirms and is removed from the mempool

I created a light wallet which can receive and send transactions. It works fine in normal situation. My (first) question is what are the situations where things can go wrong ? Is there a reference ...
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44 views

Why does my public IP show a Bitcoin Node is running when it is set up over Tor?

I've set up my node to run exclusively over TOR. But when I check https://bitnodes.earn.com/ and a few other sites with my public IP to check if a bitcoin node is accepting incoming connections, it ...
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1answer
44 views

Can I send BTC from other node or wallet with my address?

I'm trying to send bitcoins from node2 with my address using private key noted that my address is created in node1.I followed this link: "https://en.bitcoin.it/wiki/How_to_import_private_keys" I dump ...
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1answer
45 views

C-lightning Implementation password protect hsm while maintaing node access

I was wondering if there was a way to encrypt the folder that contains the hsm_secret (and a lot of other operational files necessary for constant operation of a C-lightning node) without cutting it ...
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21 views

How to Send BTC from vmnode address to local address using privatekey in testnet?

I created two bitcoin address in VM nod as well as local and dump privatekey for both addresses by using "dumpprivkey" command. Is there any posibitity to send BTC from bitcoin address which is ...
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1answer
60 views

Open source, how can I view “Transaction Create a new transaction” and “Sign Transaction”?

Not long ago I saw on the site github.com the very first Nakamoto code: https://github.com/livegnik/BitCoin-v0.01-ALPHA Running bitcoin.exe, I did not find the console. If the program is open source,...
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1answer
27 views

What happens to .blk files on disk when the Bitcoin daemon switches to a longer chain?

I’m interested in writing a program that will (1) parse the .blk files that my full-node Bitcoin daemon writes to disk and (2) write them to a relational database in an incremental fashion (i.e., ...