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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49 views

How to parse output from getblocktemplate in python?

I am able to connect to testnet and make a RPC call to getblocktemplate , but stuck at the point as how to parse the output to start minining . I referred to https://github.com/luke-jr/python-blkmaker ...
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41 views

How to compute deposits from the output of listsinceblock?

I am writing a program that, given the JSON outputs from multiple separate RPC calls to listsinceblock, stores valid deposit transactions in a database and then computes the total deposit for every ...
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27 views

Regtest mode lose blocks?

I'm playing with bitcoind, I'm an started in this subject and I'm playing with the regtest=1 option of course. The thing is that after one day all the transactions are lost, I'm trying to get the ...
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140 views

How would I ever know if my solo miner found a block?

I've tried solo mining in two ways: using cgminer, ASIC and ckpool using minerd connected to my own instance of bitcoin-qt. Either way, I've never seen any indicator showing that I have mined 0 BTC, ...
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20 views

Is there a way to list Unspent transactions for a BTC address that is not part of the Wallet, without importing the address to Wallet [duplicate]

Is there a way to list Unspent transactions for a BTC address that is not part of the Wallet, without importing the address to Wallet. I am looking for a rpc function similar to listunspent which is ...
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1answer
67 views

Does Bitcoin-core support creating a new Bitcoin blockchain?

My goal is to add a new feature to Bitcoin, which requires changing the structure of the Bitcoin blockchain. So I was wondering if Bitcoin Core supports having a new/own Blockchain? If so, how to do ...
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26 views

Regtest at height 120k took 600ms to generate a block

Just doing while : do time bitcoin-cli generatetoaddress 1 <non_local_wallet_address> bitcoin-cli getblockcount done brings regtest blockgen times up to 600ms when generating a block at the ...
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1answer
149 views

Bitcoin HD Wallet using C#

What packages do I need to use for creating Bitcoin HD Wallet in C# using BIP44? How can I connect to a remote Bitcoin Node to read all the deposit transactions received by various child addresses in ...
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29 views

I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44

I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44. Is there a way use a remote node for looking at the Received ...
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1answer
41 views

Running bitcoind regtest with docker containers

I am running bitcoind regtest locally with the method from this article https://medium.com/ssde/how-to-use-docker-to-setup-multiple-bitcoin-test-nodes-on-your-own-mac-phase-i-8c6e5442c189. However, ...
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1answer
62 views

Bitcoin transaction not confirmed since 3 days ago [duplicate]

Hello I might sound stupid but it’s been three days since I issued bitcoin transactions, all unconfirmed so far. I use Blockchain.com to manage my wallet and have done everything normally (I think, as ...
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18 views

What is upgrade fee in trading?. Is it necessary to pay? [duplicate]

I trade in standard crypto trading.. initially I trade for $100.. After they asked me to pay $300.. And said then only I can receive my profit.. after they said trade completed.. and I received profit ...
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1answer
142 views

How do I get the private key of an address in descriptor wallets? How to dumpprivkey?

When I run dumpprivkey from Bitcoin Core 0.21.1. I get the following error message: error code: -4 error message: This type of wallet does not support this command I came across achow's explanation ...
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1answer
67 views

Python code error : Hash greater than Target

While trying to run a reference code from GitHUb i am getting an error "Cannot Mine-Hash is greater than Target". As i am just a beginner with coding i am not able to figure this out. Kindly ...
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1answer
372 views

I can't start bitcoind on Raspberry Pi. Why do I need settings.json.tmp when I didn't need it before?

I've reset my raspberry pi because after configuring Samba, bitcoind started downloading the blockchain much slower. Removing Samba didn't return it to the original speeds so I figured starting with a ...
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1answer
150 views

`reindex-chainstate` configuration in bitcoin.conf?

Is there a specific flag I can place in bitcoin.conf to reindex the chainstate (not command line)? Ie: reindex=1 does a full reindex is there a flag like reindex-chainstate=1 or similar?
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1answer
67 views

Can bitcoind listen on both ipv4 and ipv6?

Can bitcoind listen on both ipv4 and ipv6? I know it can make outbound connections on both (onion and i2p) but can it also advertise multiple public hosts if available? This question was asked by ...
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2answers
50 views

Is there a way to avoid sendtoaddress from "sweeping"?

I have a wallet that has several hundred small amounts residing at multiple addresses. I noticed yesterday that, when sending a relatively small amount to a third party that the bitcoind "swept&...
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45 views

LevelDB checksum mismatch. How to start reindex from corrupted .ldb again?

I faced the problem twice in 2020 and the reindexing takes 2-3 weeks without stopping. I got the same error on another hard drive when it reindexed about 50% and got an error in the last .ldb file. ...
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22 views

N5boost10filesystem16filesystem_errorE [duplicate]

I got this message when I run bitcoind EXCEPTION: N5boost10filesystem16filesystem_errorE boost:: filesytem:: create_directory: File exists: "home/sats/.bitcoin" bitcoind: chainparambase.cpp:...
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27 views

Reuse of rpc cookie authentication

I'm looking for clarification of an answer on original thread where the accepted answer states "This option (the authentication result from Python) can be specified multiple times" As I ...
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14 views

I was given a bit coin when they first came out is there any chance of retrieval [duplicate]

I was given Free bit coins when they were first on the scene what happened to them
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151 views

Error sendrawtransaction BTC 0.21 Fee exceeds maximum configured by user

How to fix Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate) (code -25) in BTC 0.21? sendrawtransaction "hexstring" Result: Fee exceeds maximum configured by user (e.g. -...
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30 views

Get/Calculate Address

I'm currently using a program that analyses the block files. It splits all the stuff into multiple .csv files. Is there any method I can do to get the addresses & amount sent/received from tx_in ...
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1answer
74 views

Accessing bitcoind from python module hits error

I am experimenting with the blockchain a bit, specifically trying to use the python-OP_RETURN module to put a few bytes into the blockchain op_return field. To use this module I blv I need a running ...
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1answer
50 views

Why are adresses not showing up in gettxout?

I have a bitcoin node but whenever i try to gettxout i get this response: user@bitcoin:~# bitcoin-cli gettxout "0e3e2357e806b6cdb1f70b54c3a3a17b6714ee1f0e68bebb44a74b1efd512098" 0 { "...
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33 views

How can i locate my deceased husbands bitcoin? [duplicate]

My husband passed away 4 years ago and he bought a lot of shares in bitcoin when it first became a thing. How can i find out who he purchased these through in order to accuquire about his shares?
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1answer
43 views

Bitcoind information about the input and output

Im trying to get the wallets/accounts the money got sent to. But getrawtransaction does not give any information about the reciever or sender
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23 views

DB Structure for bitcoin blocks

https://github.com/blockchain-etl/bitcoin-etl#schema I found a library to parse the block data in json format. I want to parse that json and put it into a db to then use that for calculating balances. ...
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1answer
85 views

How to block certain IP address from bitcoind or using ufw

Certain IP is brute forcing my node for rpc access. I tried ufw to deny that IP but did not work. Looked for any black list conf entry or param to bitcoind and found none. Any suggestions?
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1answer
46 views

How do Blockchain Explorers lookup wallets? [Balance]

How do Blockchain Explorers lookup wallet balances? Im trying to make my own explorer. For example Bitcoin-cli does not have a method (function) to lookup a wallets balance. listtransactions does not ...
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1answer
89 views

Error: Disk space is too low!

I am trying to run bitcoind on a raspberrypi. I started by starting bitcoind on my laptop,downloading and verifying the blockchain. So far so good, bitcoind works as expected. Then I set prune=600 in ...
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26 views

how can I delete raw transaction

How can I delete funded raw transaction? When I call another fundrawtransaction method, it just appends new info to already created hash.
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1answer
26 views

settxfee: formula for fixed fee

I want to set fixed fee rate for transaction. I calculated tx size which is 222( here is this tx), called rpc settxfee $o->settxfee(sprintf('%f', (0.00001/222)*1000)); and sent to the network. I ...
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1answer
37 views

Check transaction per block in Bitcoin

what is bitcoin-cli command for checking how many transaction per block ? Thanks you
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15 views

How can i know which utxo in my wallet will be sent? [duplicate]

Assuming that i have several utxos in my wallet. Can i know which utxos will be sent when i request a transaction? For example, there are 3 utxos in my wallet: 3 BTC, 5 BTC, 7 BTC. when i send 1 BTC ...
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1answer
377 views

Requested wallet does not exist or is not loaded

I need to perform rpc requests per wallet. Here is my url http://127.0.0.1:18332/wallet/another_wallet/wallet.dat but I get error Requested wallet does not exist or is not loaded I run daemon with ...
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35 views

bitcoind: why sendmany allows only double-precision floating point numbers?

I am switching from electrum to bitcoind. On electrum is function paytomany which accept usual bitcoin amounts like 0.0001. But why method sendtomany accept only double-precision floating point ...
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1answer
75 views

What would be the easiest way to test the submitblock method?

I'm constructing a customized miner, and I'd like to check if the submitblock method would work properly when connected to mainnet. What would be the easiest way of doing that using RPC calls and ...
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1answer
132 views

Please i need help about BitlyCore.com [closed]

Please I need help. I want to know if anyone knows about BitlyCore.com I have been running the full block for days now and it's just stuck at 87% please I need help.
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32 views

Need to configure Bitcoin RPC bitcoin.conf for production ecosystem

hello I'm building a little exchange website and need a simple solution to integrate via api, I'm looking for something that allows bitcoin payments to be sent to bitcoin addresses for users who will ...
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0answers
15 views

Bitcoin Core: receiving a transaction before being synced [duplicate]

I want to make a testnet transaction to my wallet, but bitcoind is currently syncing. Once synced, will i be able to see my balance?
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276 views

Raspiblitz slow sync performance

I'm syncing my raspberry pi 4 model B, 4GB and after 4 days I'm less than 50% synced. It seems as though there is something wrong with bitcoind as there are some weird symptoms going on. The pi is ...
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1answer
224 views

Failed to start bitcoind using Ubuntu 20.10

I keep getting this error when I run sudo systemctl start bitcoind.service Job for bitcoind.service failed because the control process exited with error code. See "systemctl status bitcoind....
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1answer
81 views

Function combinerawtransaction is not working

I have multiple partially signed transactions that I want to combine into one transaction. All those transactions were signed using the same key so it should be possible to combine all those partial ...
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15 views

bitcoind.service problem showing a error message

it is giving this message The unit bitcoind.service has entered the 'failed' state with result 'exit-code'.
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19 views

Trezor backend development , blockbook installation error

I am running my own node bitcoin core , mainnet and testnet , with trezor custom backend Blockbook, so that i can access my nodes wallet, send tx. on trezor wallet. I am not able to sync the chain ...
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3answers
154 views

Can satoshi nakamoto change bitcoin

If I understand correctly, Satoshi Nakamoto (or any cryptocurrency creator) can change things in Bitcoin, like supply limit, halving, etc. My question is: How is Bitcoin decentralized if Satoshi ...
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84 views

Why universities and charity don't accept Dogecoin or Bitcoin donation?

I just tried to contact the top universities in the USA and other countries. i also contacted the charity organizations such as Red cross and united way, etc. but no response at all. seems they don't ...
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25 views

Where can I find a high performance search capabilities in a Bitcoin node implementation?

Where can I find a Bitcoin node implementation, which is capable of thousands of searches per minute, without degrading performance of the node? I am aware of two Bitcoin node implementations. ...

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