We’re rewarding the question askers & reputations are being recalculated! Read more.

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.

Filter by
Sorted by
Tagged with
1
vote
1answer
110 views

How does difficulty is defined for block '55798'?

I know that the formula for calculating the difficulty is below - Difficulty = T (max) / T Where T (max) = 1d00ffff in decimal it is 486604799. As you can see in the above screenshot the difficulty ...
1
vote
2answers
2k views

How to retrieve unclaimed BTC for wallets whose private key is lost [duplicate]

How to retrieve unclaimed BTC for wallets whose private key is lost Kindly share details
1
vote
1answer
381 views

I bought a bitcoin before my client sychronization was finished. Will I get the coin?

I bought a bitcoin before my client synchronization was finished. Will this stop me from getting the coin or will it just come later when the wallet is synchronized?
1
vote
1answer
131 views

How happens the serealization the data in the file blkxxxx.dat in the bitcoin

I'm writing a blockchain parser for bitcoin core with C++ and now I want to enrich the data I read with the raw transaction and the previous and next block hashes. I used this library to convert the ...
1
vote
1answer
167 views

How transaction becomes confirmed by miners if InputScript has only the Sig

Please help me to understand how bitcoind client verifying TX with Input Script which consist only from the Sig. For example TX 6D5DF6C0D66CFFC25CC1ABA3655952D7B081ED4E9EA3B70FCD964FDBBA01E91E has ...
1
vote
1answer
951 views

Failing to build bitcoin-core v0.13.1 on debian stretch

I have recently set up a new machine on debian stretch: $ uname -a Linux front 4.8.0-1-amd64 #1 SMP Debian 4.8.7-1 (2016-11-13) x86_64 GNU/Linux I am now attempting to install bitcoind. I have ...
1
vote
2answers
357 views

How much space does a backup of a wallet usually take?

I have a Bitcoin QT v0.8.5-beta wallet (downloaded in 2013) which I will backup before trying to export the private keys to a Electrum wallet. I have found a backup button in the QT wallet, but it ...
1
vote
4answers
1k views

Bitcoin qt synchronization problems!

So bought my first Bitcoins the other day (27 & 28/11/13) on localcoins, then transferred them to a MultiBit wallet. No problems. I decided to use a 'safer' wallet, therefore I moved the coins to ...
0
votes
2answers
86 views

Lightning - Question about force-closures of channels and its impact on recovering funds

Dear Lightning experts, someone mentioned in context with lightning channels the following things, and I would like to ask you if this statements are true, and if yes, is this a problem in a future ...
0
votes
0answers
71 views

Create a multi user web wallet using bitcoind RPC call

I just a beginner in bitcoin technology.I planning to create a multi user bitcoin web wallet using a VPS full node setup(Not use minig). I read the RPC documentation and found something for archiving ...
0
votes
1answer
160 views

Is it possible to get already-sent bitcoins from a corrupted wallet?

I bought some bitcoins on LocalBitcoins then downloaded Bitcoin-qt then instantly sent it to my wallet and now the wallet is corrupted... Is there a way to get them back?
0
votes
1answer
63 views

Are minimal bitcoin fees nowadays enforced in bitcoin-core?

I read some resources like http://bitcoinfees.com/ and Are Bitcoin fees optional?, and I still don't get this: Does bitcoin-core nowadays enforce (regulates) minimal bitcoin fee or is it completely ...
0
votes
1answer
283 views

Can somebody show me a working gettxoutproof / verifytxoutproof pair?

Can somebody please show me a working gettxoutproof / verifytxoutproof pair, I am looking for the input used on bitcoin-cli or console window in Bitcoin Core to make this happen, and the outputs. For ...
0
votes
1answer
92 views

bitcoind and bitcoin-cli and bitcoin-qt

following the hackernoon for full node btc, https://hackernoon.com/a-complete-beginners-guide-to-installing-a-bitcoin-full-node-on-linux-2018-edition-cb8e384479ea i have some small questions, is there'...
0
votes
2answers
38 views

What role has bitcoin-init as a process?

I have set up a node on a RaspberryPi. When I check for active processes with top I see bitcoin-init occupying 50% of memory and 7% of CPU. I can check for bitcoind and it is active: bitcoin@...
0
votes
2answers
382 views

Adding new files to Makefile.am

I need some help with adding files to the code base by adding them to the autotools build system. Other posts that try to answer the same question haven't helped me. I am experimenting with Bitcoin's ...
0
votes
1answer
815 views

Installing bitcoin and bitcoincash on same server

I have installed bitcoin core by using its source code in my amazon server by using the instructions given in the below youtube link https://www.youtube.com/watch?v=tG_24G7bj_w Some portion of the ...
0
votes
1answer
348 views

How to import an extended public key into bitcoin core 0.16

I exported an xpub key from a HW wallet and want to import it into my own node to keep track of changes to the balance. My node is running satoshi 0.16.1 Can someone help me find the right syntax for ...
0
votes
1answer
44 views

Batching transactions to safe on fees

I have some bitcoin spread across multiple addresses. I would like to move these to different addresses. I've heard about batching and was wondering if it is possible to batch the transaction to ...
0
votes
2answers
122 views

rewriting past transactions in Bitcoin [duplicate]

Is it possible to rewrite past transactions in Bitcoin? For example, lets say, we have a super computer with any desirable speed, that would be able to calculate hash as fast as we want. Would it be ...
0
votes
0answers
139 views

Recovering wallet after formatting SSD

I am not exactly sure what I need to do and I do not want to accidentally overwrite my disk. I may have already done so. After searching my web history I have found the BTC address that my BTC is on ...
0
votes
1answer
240 views

How to add support for segwit address and legacy with bitcoin core 0.16?

I've been running bitcoin core 0.15 as regtest, and had X bitcoin in my balance all are from legacy output addresses, As I upgraded to 0.16 core version check in debug the legacy addresses are still ...
0
votes
1answer
49 views

Using importmulti with internal set to true does not add any change keys. What am I doing wrong?

First I call: curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "createwallet", "params":["ColdWallet", true] }' -H 'content-type: text/plain;' http://user:password@127.0.0.1:18332/ ...
0
votes
2answers
332 views

Private key security level

Any of a kind Bitcoin wallet need to share private key on the internet-connected machine. Bitcoin client has no responsibility for to keep private key secure. If your's machine connected to the ...
0
votes
4answers
1k views

Monitor non-wallet bitcoin addresses for new transactions

This is usual checkout functionality. Show address to the user and needs to monitor it for new transaction during n minutes. Addresses are not unique for each payment. Optional:it would be good to ...
0
votes
1answer
384 views

need advice for Python interaction with bitcoin-core wallet

I've read about a few Python libraries that performs JSON-RPC calls to bitcoind. However, not many are actively developed/maintained, nor are they widely used in production environment. Since bitcoind ...
0
votes
1answer
484 views

Sent BTC to BCH wallet

I have seen this question pop over a few times but I did not find an answer I could understand. This is the scenario: I created a BCH wallet, mistakenly thinking it was a BTC one. I bought BTC and ...
-1
votes
1answer
165 views

Are the original Bitcoin Qt client's developers around and can we ask them to consider a portable version? [duplicate]

Possible Duplicate: How to Make Bitcoin QT Client Portable? (Windows) That is my conclusion. It's better to experiment for myself that asking all these questions I have to restrict myself to ...