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
0
votes
1answer
213 views

Full node of bitcoin

I would like to have Bitcoin Core running as a full node. I thought it is like plus 100 GB. But on the web site it says it is no more than 20 GB. When I run Bitcoin-Qt is it enough to run full node or ...
0
votes
1answer
63 views

Bitcoin-qt transaction not initiated by the wallet owner

I was just mining for some Dogecoins with Eobot and parallel I had BGFminer set on solo mining + 4 pools from eclipse. The issue is that the moment the Eobot kicked in (it started on mining Dogecoins ...
0
votes
2answers
178 views

Using paper based public/private keys in bitcoin-qt [duplicate]

If I only have a public key string and a private key string written on a sheet of paper. How do I use those in bitcoin-qt? If this can be added to bitcoin-qt, will it eventually show me how much ...
0
votes
1answer
437 views

Programming for/modding bitcoin-qt on Windows

In multiple places I've found methods of modifying or adding to the bitcoin-qt(or other coin wallet) source on ubuntu or osx, but how would I do this on a Windows machine? If possible, I'd like to be ...
0
votes
2answers
634 views

Cannot connect to bitcoin-qt server

# server=1 tells Bitcoin-QT to accept JSON-RPC commands. server=1 # You must set rpcuser and rpcpassword to secure the JSON-RPC api rpcuser=bhhtufhrt rpcpassword=ferhrhh im trying to connect to ...
0
votes
0answers
291 views

Problem to start bitcoin-qt

Hi (Sorry for my English) I have installed bitcoint-qt but i can not start the program. Error! System: Windows 7 prof 64 BIT Error: Problemsignatur: Problemereignisname: APPCRASH ...
0
votes
1answer
996 views

I want to use another wallet.dat file with bitcoin-qt. Is this possible?

my situation is the following: I have a laptop with not much space on disk and therefore using bitcoin on a stick (I start bitcoin-qt with the argument "-datadir=location/to/stick). Now I wanted to ...
0
votes
1answer
2k views

bitcoin-qt keeps on quitting with “failed to read block”

I just wanted to install bitcoin-qt on another machine (all others are working fine) but I cannot seem to retrieve the block chain using bitcoin-qt 0.8.6-beta (as downloaded from http://sourceforge....
0
votes
1answer
358 views

Setting up Statistics with litecoin-qt or bitcoin-qt

I'm trying to set up a bitcoin/altcoin pool server, but I've run in to a bit of a problem, I have no way to verify I've connected to the pool succesfully, and no stats or informations on the actual ...
0
votes
2answers
153 views

Request blockchain for transactions

I have installed bitcoin-qt, so I maintain the blockchain locally. I have a list with transaction hashes strings (i.e f5d8ee39a430901c91a5917b9f2dc19d6d1a0e9cea205b009ca73dd04470b9a6) and I want to ...
0
votes
1answer
302 views

Authentificate myself as the sender of a bitcoin transaction [duplicate]

How can I prove my ownership of a tx's sending address to the receiver, assu? I can not answer This question, but to help anyone out, reading this: Since localbitcoin's signature verification is ...
0
votes
0answers
48 views

Bitcoin Conf file missing windows 8 [duplicate]

I am trying to set up the bitcoin rpc login but I cant seem to find the bitcoin.conf file on the windows 8 file system ive looked under myusername/roaming/bitcoin no file there or anywhere else I have ...
0
votes
1answer
1k views

What is the bandwidth of the standard bitcoin client as at August 2013?

A question about bandwidth was asked and answered in Nov 2011... we are now Aug 2013 and the usage of bitcoin has grown enormously since then. So just as an update to that question I ask it again ...
0
votes
1answer
28 views

Should we wait 10 minutes to confirm a transaction [duplicate]

I have read this proof of work calculation takes about 10 minutes. That mean people who are making the transaction should wait 10 minutes ? Let's imagine i want to buy a drink with bitcoin. The ...
0
votes
1answer
44 views

Total Bitcoins in circulation on any given day? [duplicate]

I'm creating a spreadsheet to track total bitcoins in circulation from day 1. This would be to add up each Bitcoin per day created and add to an accumulating total. For example, if we picked any day ...
0
votes
2answers
103 views

Bitcoin core How do I get the transaction fee while using sendtoaddress

I have a bitcoin core running on testnet, so for suppose I have a wallet balance of 1BTC and I have to send it to an addressx, so how can I know the amount of transaction fee so that I can subtract it ...
0
votes
1answer
96 views

I mined in early 2010 with a cpu miner and just found my keys after forgetting all thease years, no joke need info please

who is the best most reputable bitcoin recovery company? I have added details and questions about our situation below Thank you And God Bless what was the mining program from the devs back then? I ...
0
votes
2answers
41 views

Bitcoin core make error

I am new to bitcoin core development. I have created a clone using bitcoin core on a mac os mojave 10.14.3. I am have installed all dependencies and am able to run the autogen.sh and configure with ...
0
votes
1answer
17 views

Network connectivity to the Fullnodes

What would the router configuration (port forwarding) be if I have two nodes 192.168.2.21 and 192.168.2.22 running bitcoin and wants to enable port forwarding for them both on 8333?
0
votes
1answer
99 views

how to create a transaction that can only run in bch-abc using javascript?

I use the "bitcoincashjs" or "bch-lib" and want to add a new opcode "OP_CHECKDATASIG" to output.How to do? const utxo = { 'txId' : '...
0
votes
1answer
519 views

sendrawtransaction and txn-mempool-conflict

When i sendrawtransaction to bitcoind, i get error (exceptions) 18: txn-mempool-conflict (use Bitcoin JSON-RPC denpamusic/php-bitcoinrpc) But the transaction is sent to the network and is subsequently ...
0
votes
1answer
192 views

Bitcore explorer insight testnet initialisation

I am using bitcore explorer and I want to initialize insight api in testnet. It has the following code. I try var insight = new Insight('testnet') but it is not working. What value for url should i ...
0
votes
2answers
85 views

Historical prices of currencies

Where can I get historical prices for coins, with the ability to store the information. I understand that most APIs do not allow you to save their information, any that do?
0
votes
1answer
33 views

What factors decides the number of tokens to generate?

Tron has decided to generate 100B tokens with some initial price? What parameters do these centralised crypto owners consider before deciding the number and price of tokens?
0
votes
1answer
412 views

0/unconfirmed and now no transactions anymore

So recently (2days ago) I made this transaction: Status: 0/unconfirmed, in memory pool Date: 20.12.2017 23:30 To: N**** 1LecRzTpKXh9kCgqXbUXtdXfQjE145BR87 Debit: -0.00447735 BTC Transaction fee: -0....
0
votes
1answer
82 views

Why my Bitcoin Cash coins moved to another wallet if i did it on original Bitcoin on 12/12/2017?

I have very old Bitcoin wallet from 2012 year. The last operation was 12/12/2017 - this was movement all sum to my another wallet. I was very surprised today when i first time load this wallet into ...
0
votes
2answers
441 views

Lost bitcoin on paper wallet

so i got a 0.8 btc on my paper wallet..and usually i checked the balance on daily basis on blockchain.info. And weird thing happened yesterday,my paper wallet sent my btc with total amount of 0.2btc ...
0
votes
1answer
340 views

Locked out of my bitcoin core wallet

In 2013 I transferred 5,02 BTC to my Bitcoin Core wallet. My Bitcoin version v0.8.1.0-g34d62a8-beta QT is version 4.8.4 After the transfer I locked the wallet with a password, wrote the password down ...
0
votes
1answer
824 views

Importaddress taking a long time to run / does not work

When I try to run importaddress using the core client it takes a long time to execute, over 10 minutes, even though I have supplied a "false" argument for rescanning. For example: bitcoin-cli ...
0
votes
1answer
30 views

Looking for revenue data of bitcoin related websites

I was wondering if we can share pointers or anectodes about revenues of web projects related to bitcoin or general cryptocurrencies.
0
votes
5answers
1k views

How to read each bitcoin block by python

I need to read all Bitcoin transactions from the first one until now and extract all Bitcoin addresses for further analyses Any idea how to do it in Python?
0
votes
1answer
119 views

Blockchain to store private data and ownership

As far as I know Bitcoin Blockchain can be accessed via API to enter data. In this case I want to generate a hash/ Checksum MD5, that cannot be understood by anyone that doesn't have the private key, ...
0
votes
1answer
397 views

Bitcoin core internal transfer problem

i have one big problem in bitcoin core internal transfer. to understand my question, please read my problem clearly. 1) Let me explain you by providing example. My one of the core account let's say "...
0
votes
2answers
122 views

Does the software to conduct a 51% attack exist?

I know that it would cost hundreds of millions of dollars to do a 51% attack on Bitcoin, but if somebody did that, bought the hardware, etc could Bitcoin Core or any other software be easily ...
0
votes
1answer
2k views

How much bitcoin can be mined with intel core i5 pc with external graphic card? [duplicate]

I know ant miner is required to earn some cash, but am curious to know that how much bitcoin can be mined per day with a pc if it has the configuration like : processor= Intel Core i5 6600K 3.50GHz ...
0
votes
1answer
596 views

Please help! How do I transfer my wallet from bitcoin core to MultibitHD? [duplicate]

I (should by now) have bitcoins in my wallet,I sent them to my wallet whilst i was using bitcoin core but after taking days to sync (and it still hasn't synced) i have given up and installed ...
0
votes
1answer
637 views

Transaction never confirmed over 2 days [duplicate]

I did a transaction from my bitcoin core wallet. The transaction 6263452f635713e60f83d45fe41b1c9ba3b5f5e3af664778bf18a05b15cfde06 has not confirmed, and it is now over 48 hours since I made the ...
0
votes
1answer
52 views

Why is syncroning taking forever on BitcoinCore [duplicate]

It has been synchronizing for months and i want my money now. I have tried re-downloading , clearing cache i downloading from their website. It is the lastes.t version of Bitcoin Core.Windows 10 ,4....
0
votes
2answers
708 views

Two weeks have past, still nothing on my transactions [duplicate]

Two weeks have past, still nothing, can anybody advise? tried the zap wallet thing, and its just removed the transactions, so theres nothing in my wallet on my mac. the only thing i have to go on is ...
0
votes
1answer
419 views

Running out of disk space with Bitcoin Core

A year ago I purchased some bitcoins and it was sent to my address. I loaded up Bitcoin Core and installed it to my laptop HD, it ran out of space on the HD, mid blockchain sync. It has now been a ...
0
votes
2answers
454 views

Lost Bitcoin-qt password

I have a friend (yes it's actually a friend and not me) who lost his password for their Bitcoin-qt wallet and can't access is Bitcoin. The wallet is installed on the hard drive of a MacBook and he ...
0
votes
2answers
103 views

Newb Help - Output not matching input

I've just attempted to send some bitcoin between 2 wallets and the amount received in the receiving wallet doesn't match the input, can someone explain why? Here is the transaction https://blockchain....
0
votes
1answer
467 views

Slow synchronisation bitcoin-qt - bread wallet [duplicate]

I have used bitcoin-qt for a while, but I have read now there is bread wallet for iOS more secure than any OS X wallet, is this true ? I didn't update it for a while and now it is like 60+weeks ...
0
votes
4answers
161 views

How can I exactly use both the rpc API of Bitcoin and the rpc API of Bitcoin cash on the same server or machine?

I've looked for an exactly answer but I really couldn't find it. So can someone let me know the why of doing what I'm asking correctly?
-1
votes
3answers
4k views

What is the need of miners and mining? [duplicate]

Bitcoin is designed to have an average time duration of 10 min between block mining. This is maintained by the difficulty attribute and haskey complexity. But mining takes so much power and it is a ...
-1
votes
1answer
442 views

That hid Satoshi Nakamoto in your code [closed]

I tried to find in the code puzzles from Satoshi Nakamoto and I may have found them. How do you think the meaning of these symbols? https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#...
-1
votes
2answers
117 views

What happens if the transaction interrupted during proof of stake?

Suppose I've few coins for proof of stake, and suddenly my internet connection goes off or power down of my pc, what may happen if a transaction was in the middle, would I lose my coins which were in ...
-1
votes
2answers
314 views

Minimum how much bitcoin may I get per week if I stake 0.05BTC?

If I keep my pc on for 17 hours a day, then minimum how much bitcoin may I get per week if I stake 0.05BTC ? -Thanks.
-1
votes
2answers
346 views

Free bitcoins are real? [closed]

That's confusing the bitcoins used for marketing are real or not.. like some posted a code in facebook or in social media for free bitcoin so those bitcoin are real or a just marketing, hacking ...
-1
votes
1answer
166 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 ...