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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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3answers
32 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
20 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
54 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 ...
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1answer
17 views

Is it possible to use Bitcoin Core Qt as interface for DIFFERENT full node?

bitcoind is running on the background, local RPC server is running, all good. But is it now possible to have GUI? To say to bitcoin-qt that it should use RPC instead of going to disk files (which are ...
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0answers
30 views

Sent some testnet Bitcoin to Bitcoin Core wallet but balance is still zero

I got the testnet Bitcoin address with this command: bitcoin-cli -testnet getnewaddress And here is the Bitcoin address: 2NDtNjDbEiNiKDuAnwyKBmRPQ49NNpesdhE As you can see in blockchain there was a ...
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0answers
31 views

Automatically restarting bitcoind five minutes after reboot on ubuntu

How can I run bitcoind automatically five minutes after restart? So far I have crontab set up to reboot my computer every morning at 4AM (it runs into issues when it stays on for more than a couple ...
2
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1answer
161 views

My first full node - no bitcoin.conf

So I am in the process of downloading the blocks after installing bitcoin on my ubuntu server. I have followed the guide on https://bitcoin.org/en/full-node. Everything is working correctly. Blocks ...
1
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1answer
37 views

How can Blockchain.info query information from the blockchain faster than I from my own node?

I've just run a Bitcoin node but I don't understand how blockchain.info or any other blockchain explorer works. I mean, sometimes I have problems like "socket.timeout". Shouldn't it be faster to query ...
2
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1answer
19 views

bitcoind service daemon

So I am running bitcoind everything is fine and the blockchain got synced etc. Next step is to have bitcoind starting on boot. I get this error on starting the service after creating a nano /etc/...
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1answer
27 views

Where does Bitcoin Core store DB_LAST_BLOCK?

My understanding is that Bitcoin Core stores where it left off(DB_LAST_BLOCK) in $DATADIR/blocks/index. But which is the actual file bitcoin core stores it at?
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1answer
18 views

How to run a python script when occur incoming transaction in Bitcoin core 0.18?

I want to run a python script when occur an incoming transaction. I think set zapwallettxes flag in bitcoin.conf but I don't know where set the script path to execute. Is it possible to execute ...
2
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0answers
14 views

what is fee_estimates.dat data format?

I'm trying to parse the file fee_estimates.dat. What is the format of the binary data inside fee_estimates.dat ? I didn't find any information about it in the dev documentation of Bitcoin. This is ...
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0answers
28 views

Backuping account system of bitcoin-core

I'm using bitcoin-core 0.16 currently, i have quite a few number of accounts with the transactions to this accounts. Now, i want to transfer my wallet to another machine, which files should i also ...
2
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0answers
26 views

Fully synced bitcoind 0.18.1 on RPI4 using 100% cpu ( 1 core only ) , is it normal?

I started playing with bitcoind 0.18.1 on a RPI4 and i can see that even when fully synced it is still using 100% cpu so one full core. Is this normal / expected ? Looking at the threads is the ...
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1answer
41 views

Bitcoin JSON RPC not working on Remote IP

i cannot get it to work firstly i was able to use bitcoind in my vps (locally) but when i added rpcbind and allowip to my bitcoin.conf i cannot even use bitcoin-cli its giving me this error: error: ...
1
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1answer
24 views

Running bitcoin node in docker behind NAT

A running bitcoin node doesn't accept incoming connections when it's running behind NAT in a docker container. To confirm the problem is related to docker I edited NAT settings on my router. If ...
0
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1answer
34 views

Receive/send Transactions latency

I am on Ubuntu 16.04, with the latest version of Bitcoin Core, synced and working. I would like to know why is there a little delay of approximately 1 sec, sometimes more, before a received ...
0
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1answer
43 views

Is there a way to delete a test wallet without stopping bitcoind?

For my unit tests, I'd like to be able to delete and recreate a wallet without having to stop bitcoind and manually deleting the wallet directory. When I try to delete such wallet directory without ...
1
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1answer
46 views

What is the simplest command I could use to test that my wallet unlocking process works properly?

I simply want to unit test that my lock/unlock process works well on an encrypted wallet. What would be the easiest command I could send (that doesn't involve sending coins) to actually validate if ...
1
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1answer
45 views

Backup of a bitcoind wallet using the extended private masterkey only

If I understand correctly, bitcoind makes use of a extended private masterkey in order to deterministically generate private/public keys for a wallet. Using the dumpwallet command, I'm able to get ...
1
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0answers
52 views

Bitcoin Lightning Network

I created a channel in lightning network, did the payment and the channel balance of the receiver got updated. But after closing the channel , the wallet balance of the receiver is not getting updated ...
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1answer
65 views

How to import address to a wallet which runs in pruned mode [closed]

I am running Bitcoin Cash node with prune=99000 mode enabled. So, I tried to import addresses of BCH from another BCH wallet by using importprivkey method and I am getting an error: Rescan is disabled ...
2
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2answers
56 views

Cannot call rpc api from other machine in same local network

cannot call rpc api from other machine in same local network There is a regtest node in my local network , I can call rpc api only from the node's machine,not my local machine. I know rpcallowip is ...
1
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1answer
24 views

Running multiple bitcoin instances on same server system

I wish to run multiple instances of bitcoind on my server to support highly read intensive RPC applications. Following links: how to run multiple bitcoind node on one server? Running Multiple Full ...
0
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1answer
62 views

Why is Bitcoin Core full node so slow to sync?

After 12 hours, progress changed from progress=0.533751 to progress=0.541254, less than 1% progress. $ ./bitcoind ... 0 hours: 2019-10-12T17:57:11Z UpdateTip: new best=...
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1answer
28 views

My full node seems to be rejecting tor connections

I'm running my full node with bitcoin core v0.18.1 with a mostly default configuration on debian 9.11. Port 8333 is forwarded through my router and I have 20+ node connections, so can safely assume ...
1
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0answers
19 views

TimeoutError: [WinError 10060] when trying to connect to bitcoin rpc from a pc on the same local area network

I have a laptop with win10 installed. It is now running a full bitcoin node perfectly. I am already able to make rpc requests from the laptop using python and get valid responses. The laptop is ...
1
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1answer
57 views

How do I get a full transaction index with Bitcoin Core?

How can I sync bitcoin full node so that I can access all details of transactions occurring on other nodes and other wallets also, like blockchain.info. I have synced a full node using below ...
0
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1answer
103 views

Import watch-only address to 0.18 core wallet, addresses missing

I am running new bitcond server $bitcoin-cli importaddress '32om7Xx7GnwxkiAQjpp3hhayDX4mSNLmR1' 'label' false $ it seems added. Then I try to list all addresses in wallet it return empty list. $...
1
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1answer
47 views

Error Signing P2SH-P2WSH MultiSig - “Unable to sign input, invalid stack size (possibly missing key)”

I am trying to create and spend a P2SH-P2WSH transaction using bitcoin-cli but am getting "Unable to sign input, invalid stack size (possibly missing key)" when I try to sign the Multi-Sig transaction ...
1
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2answers
52 views

Is it possible to change private key

I would like to know if it's possible to change private key of bitcoin wallet via rpc call to bitcoind. Thank you for your answers
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1answer
42 views

Is Bitcoin Core required for wallet projects?

My team wants to create a cryptocurrency service provider platform to Sell/Buy BTC and something else in form of web/mobile app. It's about one month that I have been studying different articles about ...
1
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1answer
34 views

From LND Bitcoin Wallet to Bitcoin Wallet

Let's say I have some Sats on Zap Desktop wallet. Is it possible to transfer the Sats out of the Zap Desktop Wallet to for example MyCelium?
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0answers
68 views

How to use “OP_CHECKSEQUENCEVERIFY” in regtest?

I have created a P2sh includes OP_CHECKSEQUENCEVERIFY and funded the same. I was trying to redeem the coins. But i could not understand the working of OP_CHECKSEQUENCEVERIFY. Below is the example ...
2
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4answers
74 views

What are some affordable options for running a full node?

I would like to start running a full node so I can start building bitcoin/lightning applications, but my laptop doesn't have the storage to do so. Does anyone have any suggestions on how I can ...
0
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0answers
10 views

Testnet daemon stuck at block 0

I installed bitcoind for the first time and configured it with testnet. I ran ./src/bitcoind -testnet -daemon and confirmed Bitcoin Core is running by trying to re-run the same command. The output for ...
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0answers
18 views

How work settxfee on 0.13.0? [duplicate]

I do bitcoin-cli settxfee 0.00088496 true or $fee = '0.00088496'; if ($bitcoin->settxfee($fee)) { and then $redeem = $b->sendtoaddress($address, 0.0001); And I expect payment in bytes will ...
0
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0answers
20 views

bitcoin-cli getbalance does not match balance with bitcoin-cli listtransactions

version of bitcoin-cli 0.17.1 when I try bitcoin-cli getbalance I get balance 0.00010471 BTC when I try bitcoin-cli listtransactions "*" 1000000 >aaa.txt and then calculate SUM(receive) -...
0
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0answers
38 views

zmq pubhashblock / pubrawblock during initial block sync

I've recently noticed that block data is not published via zmq during the initial sync (but transaction data is). Is that something to be expected, or could it be a misconfiguration of my node (or ...
0
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2answers
60 views

Can't get the tx with gettransaction or getrawtransaction methods

I am running bitcoin-d (probably downloading the prev blocks) in a shell. In another shell i am trying to get the information of a transaction (...
0
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1answer
21 views

Targetting a specific wallet when sending commands using RPC commands to bitcoind

I'm very new to Bitcoin development, using its RPC API. I created a wallet using { "method": "createwallet", "params": { "wallet_name": "/wallets/walletA" } } Now I want to get ...
0
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0answers
12 views

Configuring bitcoind for rapid response

I have need do a lot request at the bitcoind (suppose that I wan to get all block inside the blockchain and save all script inside the transactions). What is the better configuration of bitcoind for ...
2
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1answer
21 views

Disable update of blocks locally with bitcoind cmdline option

I'm using blockchain2graph tool to import the Bitcoin blockchain into Neo4j. It uses JSONRPC calls to read block data. For this, I have to have the bitcoind service running. Is it possible to disable ...
1
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1answer
47 views

Was libbitcoin a part of bitcoin core in the past?

I am trying to use c++ code from the book of Antonopoulos for some time now and I seem to lack an include named bitcoin/bitcoin.hpp. To compile the code the g++ compiler gets a pkg-config input with ...
1
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0answers
35 views

Can I delete /home/USER/bitcoin after successfully installing bitcoind?

I wonder if I can delete the git folder I cloned after I did the installation. Probably yes, right? Do people do this? Or is it more usefull to update the git after some time and then build bitcoind ...
1
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1answer
18 views

How secure is it to upgrade bitcoind?

The release notes of bitcoin-core suggest to just copy the bitcoind file, which appears on my system (Raspbian Butch) in /usr/local/bin. Since I built from source using ./configure I wonder how this ...
0
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1answer
24 views

Bitcoin RPC estimatesmartfee argument keys necessary?

I am attempting to use a PHP RPC Wrapper to connect to bitcoind for RPC API calls, estimatesmartfee, more specifically. My question is, do I need to specify the argument keys, or just the values? ...
0
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1answer
35 views

Bitcoin RPC RegTest not validating addresses

I am attempting to use Bitcoin RPC in regtest mode, however, when I try to validate a bitcoin address with the following function public function validateAddress($address) { $command = new \...
1
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1answer
42 views

Exit bitcoind gracefully in a bash script

I'm writing a bash script for some Bitcoin / Lightning experiments. I want to start bitcoind in the background (and also LN instances, but they are not the focus of this question). I want the script ...
1
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1answer
34 views

2-of-3 multisignature account with limitations on withdrawal

I want to create a 2 of 3 multi-signature account from where one can withdraw money only after a certain period of time. How can this be done?