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Questions tagged [bitcoin-core]

This tag should be used for questions pertaining to Bitcoin Core. Bitcoin Core is an MIT-licensed Qt 5 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client". This tag should be used when referring to the Bitcoin Core software.

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2answers
50 views

Including transactions in a block - rules and time / technical aspect

I’ve a question regarding block and transactions included in the next block that is solved. Let us assume theoretically that there is newly propagated solved block. And now there are: tx0 and tx1 –...
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0answers
38 views

Create P2SH address is not same as address saved on rpc node

I have a private key and trying to create P2SH address on testnet like my node created but they're not same. Please help me a bit, thanks so much. PrivateKey: ...
4
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1answer
123 views

nLockTime in Bitcoin Core

Currently, the Bitcoin Wiki states: A part of the original Bitcoin implementation, nLockTime is a field that specifies the earliest time a transaction may be added to a valid block. A later Bitcoin ...
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1answer
59 views

Possible to run a Lightning node on same computer as Bitcoin Core node?

I have a Windows 10 laptop that is running a full Bitcoin node using Bitcoin Core. Is it possible to also run a Lightning node on the same laptop simultaneously with the Bitcoin node?
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2answers
92 views

Bitcoin Core frozen trying to sync and/or connecting to peers

I downloaded Bitcoin Core directly to my laptop and sent BTC to what i believe is my wallet. The BTC is no longer in my senders wallet and I do not see it in my bitcoin core wallet. It was working ...
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1answer
154 views

How to send bitcoin from an offline Bitcoin Core that doesn't have a synced balance?

I am setting up a cold wallet. How can I generate a signed raw transaction from bitcoin core wallet that controls some bitcoins? PS: I generated the wallet using getnewaddress in console from the ...
2
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1answer
54 views

Error after reindex

Hello after I got an db error.. I try to reindex my db. But I got this error: ERROR: ReadBlockFromDisk: Errors in block header at FlatFilePos(nFile=75, nPos=117947311) So what can I do to fix it ? ...
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1answer
38 views

How can I clone bitcoin 0.16.1 version (not the latest one ) with git command

this is the version that I want to clone : https://github.com/bitcoin/bitcoin/releases/tag/v0.16.1
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0answers
55 views

Why am I getting error: “Signature must be zero for failed CHECK(MULTI)SIG operation” when using signrawtransactionwithkey

I am using descriptor based importmulti like so to import a 2 of 3 HD multisig cold storage wallet into my node: curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "importmulti", "...
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3answers
14k views

Where can I access the original, Satoshi written Bitcoin code?

The articles of https://bitcointalk.org/index.php?topic=41718.0 seem to be annotated walkthroughs, and I'd like to see the raw code, as it was originally written in the first release.
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0answers
31 views

How do I determine the descriptor of a given Extended Public Key?

I am trying to run the bitcoin-cli getdescriptorinfo on a ypub... extended public key. Every time I do this I receive the message: error code: -5 error message: Invalid descriptor How can I ...
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0answers
85 views

Any method to check balance of particular address in bitcoin core (0.18) using json rpc?

Setup bitcoin core (0.18) in my local node.In new version maximum methods are deprecated.I create new address using json rpc method and send some coin s on it.Now I am unable to check the balance of ...
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1answer
129 views

find out total balance on MainAccount

I don't understand receiving address usage at https://blockchain.info/api/api_receive As I understand it it should work like this: MainAccount |--generatedReceivingAddress1 (then someone send btc and ...
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1answer
2k views

Tax implications of withdraw fee from one exchange (Binance) to another GDAX/Coinbase

I transferred 0.2 ETH and 0.3 ETH in separate transfers from GDAX to Binance (GDAX does not charge a fee for this). Then, I transferred back from Binance to GDAX all 0.5 ETH, but since Binance ...
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1answer
95 views

BitcoinCore Ubuntu buiild error: ‘relative’ is not a member of ‘fs’

I'm trying to build Bitcoin core client on an LinuxMint. I'm having the following error(which have not encountered before, while making it on MSWindows or another Linux machine) in make process, right ...
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0answers
31 views

Bitcoin Module - Hash512-EVP_ByteToToken

Is there any standalone software modules created which allow the user to complete the following: 1. Enter in passphrase 2. Enter a given salt 3. Enter the number of rounds I am looking ...
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2answers
102 views

Bitcoin new receive addresses

With the Bitcoin-ABC cli I can generate as many receive addresses by the following command ./bitcoin-cli getnewaddress "label" But from my understanding the funds still go into the same wallet and ...
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2answers
184 views

How can I see if my bitcoin core money is in my wallet?

I had funds deposited in my bitcoin core account about a year and have still not seen them appear in my wallet. Is there a way I can make sure the transaction went through, and how I can have access ...
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0answers
18 views

Why is systemd service file not using my config and why is it failing in general?

When I start simply with bitcoind and stop with bitcoin-cli stop everything works fine. But if I start bitcoind with sudo systemctl start bitcoind and I made this /etc/systemd/system/bitcoind.service:...
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1answer
140 views

Adding Dependencies to Bitcoin Core

I am currently editing a fork of Bitcoin Core. I have three libraries I would like to add as dependencies. One is my own creation (CPISync) and it depends on a second library (NTL) which in turn ...
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1answer
266 views

Mycelium Backup Restore

Is there a way I can restore my mycelium Bitcoin wallet if I have forgotten the 12-word list? I have searched everywhere and no one describes a situation like this.
2
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1answer
253 views

How to edit the label of an existing address exactly like in bitcoin-qt but instead using RPC calls?

I am trying to edit the label of a bitcoin address in my wallet outside of bitcoin-qt. Currently I only know of 'setaccount' but it results in two addresses after editing one, it assigns a new address ...
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0answers
38 views

Bitcoin Core gives error “Error reading from database, shutting down” during first time setup

I have recently installed Bitcoin Core on my Gentoo system via portage. During the first time setup, the initial download stopped at roughly 30% completion and gave the error "Error reading from ...
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1answer
41 views

Bitcoin deposit function suddenly stopped working

My app uses a cron blocknotify-update-deposit to search for incoming deposits, users deposit funds and they are then added to their balances. I have not used my app for around six months and I have ...
2
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2answers
199 views

I run a full node. Is there a desktop client to connect to this full node?

I run a full node on my Raspberry Pi at home. I want a desktop wallet that uses this full node. Not interested in using remote-x or xpra or setting up an electrum server.
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1answer
270 views

Does exist some library for decode/encode raw transaction?

I want to parse raw transaction into JSON then change some values and encode back to hex. JSON like this: { "addresses": [ "346vcZZ6QV4nr68fybMEuA7qxxQeyKWoPS" ], "block_height": -1, "...
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1answer
700 views

How to fix Bitcoin QT loading issue

A few years ago my Bitcoin QT wallet stopped working and error messages started popping up The error reads: Assertion Failed! Program:... File: src/main.cpp Line: 1127 Expression: pindexFirst ...
2
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1answer
100 views

How do I export an xpub from Bitcoin Core for use in BTCPayServer?

I'm using Bitcoin Core 0.17, and using bitcoin-cli getaddressinfo method to extract xpub for a given address. This xpub is 66 characters long, and I'm using BTCPayServer which needs this xpub and I'...
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1answer
57 views

How to differentiate between sending and receiving address in blockcypher api result?

I am using BlockCypher's API to get a list of transactions for a bitcoin address. I need to maintain a record of IN and OUT transactions from this address with time and transaction hash. However, I am ...
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0answers
26 views

Bitcoin SPV not able to fetch transactions

I am developing a Bitcoin wallet SPV and using 3rd party SDK for the same. However, I tried to create wallet and it gets successfully created and I can also restore those wallets but amount and ...
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0answers
27 views

Why does bitcoin-core wallet generate a new wallet during transaction? [duplicate]

I wonder why bitcoin-core wallet automatically generated a new wallet address during transactions. If you see this transaction, https://btc.com/...
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1answer
113 views

Web wallet making direct RPC calls to bitcoin node

Is it good idea to make direct RPC call's to node computer to generate web wallet addresses here is what i am trying to implement i want to create new web wallet based on bitcoin and want to allow ...
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1answer
1k views

Transactions confirmed on Blockchain but nothing received to my Blockchain wallet

I need some info/help. I have sent some Bitcoins to my Blockchain wallet. They have all be confirmed and done with. But it has been 2 days now and nothing has shown on my wallet. This is the ...
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3answers
66 views

Ironically, encryption is not an important part of bitcoin (?)

The above statement is taken out of a book which I've been reading: Mastering Bitcoin 2nd Edition. ...as its communications and transaction data are not encrypted and do not need to be encrypted ...
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1answer
268 views

Import private key to bitcoind

I have a bitcoin testnet account in copay wallet. I want to import its private key in bitcoind. So, I exported the private key, but they were encrypted. I got a Test-Copaybackup.aes.json file. ...
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0answers
18 views

How to build most basic bitcoin-qt from source?

When testing and fiddling with different settings for bitcoin-qt, I have to build bitcoin-qt from scratch from time to time. I am using Ubuntu. Since this is time consuming, I'm wondering what kind of ...
1
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1answer
415 views

RPC Command to send from multiple accounts to one account (default - “”) in same wallet

I have small amounts in multiple accounts in the same wallet. I want to send all of them to default account (usually named as ""). Is their any RPC command available for this scenario? Thanks in ...
0
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1answer
45 views

How to check if confirmation is done or not yet?

After sending Bitcoin to any address, how can I check if the transaction has at least one confirmation? Should I poll the transaction repeatedly or is there any event when confirmation is made.
4
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2answers
213 views

Obtaining Lightning network graph data

I was wondering if it is possible for me to obtain data about the Lightning network mainnet, particularly the nodes and the edges (channels) in the network. I know that the graph is visualized in ...
1
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1answer
24 views

QR code life span

Once the QR code is generated, how long is the code good for 24 hours, 48 hours? I googled for the answer with no success. Thank you
0
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2answers
140 views

Accidentally shutdown system while Bitcoin Core client was synchronizing

My computer was accidentally shutdown while Bitcoin Core was synchronizing and it is now giving the error fatal error please see error log. Please tell me what is the solution to this problem.
2
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1answer
1k views

Can't connect to Bitcoind remotely

I am running a Bitcoin Cash node on my server, and starting it like this: start bitcoind.exe --server=1 --rpcuser=user --rpcpassword=password --rest=1 --rpcport=8332 --datadir=F:\Bitcoin --bind=10.1....
0
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1answer
34 views

Deduct transaction fee always from 1 receiver address if sending some BTC amount to 2 different receiver addresses in single transaction

Need help!! anyone there.. How to Deduct transaction fee always from 1 receiver address if sending some BTC amount to 2 different receiver addresses in single transaction
1
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1answer
94 views

How can I turn off sending of bitcoins?

I use Bitcoin Core v.0.17 on the server. I want to only be able to receive, and prevent sending. How can I turn off sending of bitcoins through bitcoind, bitcoin-cli or bitcoin.conf?
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2answers
448 views

How to get each wallet address balance

I’m currently having a hard time figuring how to get to check users wallet addresses and get the balances ie if a user wants to send out 3btc and they have like 10 addresses with different amounts ...
0
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3answers
298 views

How do I run GUI on Raspbian?

I had this running perfectly and the blockchain was synching and at about 80% completion. I came home from work to a power outage. I keep seeing to run bitcoin-qt, it doesn't appear that I have that. ...
0
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1answer
52 views

Decrypting Bitcoin Wallet for Android

Does anyone know how to decrypt on a mac? I used openssl enc -aes-256-cbc -md md5 -a -in /Users/adriangonzalez/Desktop/bitcoin-wallet-backup-2019-06-26-22-20 -out ~/Desktop/file.txt, but the resulting ...
1
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1answer
750 views

Trying to open an old bitcoin core wallet.dat file fails

I am trying to open an old (~2012) bitcoin core wallet.dat with a bitcoin.com wallet, and it says that my password is incorrect, although it works great on my bitcoin core wallet. Was there any ...
2
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2answers
735 views

How to migrate bitcoin node from one computer to another

In my old computer some addresses have bitcoin and it is showing on blockchain. When i am trying to get balance of the same addresses in my new computer where i have synced bitcoin full node ,I ...
2
votes
2answers
456 views

Bitcoin Core 0.18.0 in Docker container: Could not connect to the server

This is likely me not understanding how Docker works, but I've tried everything I can think of. I'm trying to start bitcoind in regtest mode inside a Docker container, then execute JSON-RPC commands ...